Entries |
Document | Title | Date |
20080204669 | Compact image projection arrangement with correction for laser beam angular misalignment - A lightweight, compact image projection module has a laser package having a common exit port, and a plurality of lasers mounted in the package and operative for emitting a plurality of laser beams of different wavelengths through the common exit port. An optical assembly focuses the laser beams exiting the common exit port, and includes a common focusing lens through which the laser beams pass along respective paths that are in angular misalignment. An optical corrector element in at least one of the paths corrects the misalignment to produce aligned beams. A scanner sweeps the aligned beams in a pattern of scan lines, each scan line having a number of pixels. A controller causes selected pixels to be illuminated, and rendered visible, by the aligned beams to produce the image. | 08-28-2008 |
20080204670 | Projector, projected image adjustment method, and program - A projector including: a projection section which projects a calibration image onto a projection target through a projection panel; a shape determination section which determines a shape of the projection target based on sensing information from a sensing section; a correction target area setting section which sets a correction target area; an aspect ratio calculation section which calculates an aspect ratio of the correction target area; a determination section which determines whether or not a value which indicates a difference between the aspect ratio of the correction target area and a reference aspect ratio satisfies a set condition; and an image generation section which generates an image having the shape of the correction target area on the projection panel when the set condition is satisfied, and generates an image having the reference aspect ratio on the projection panel when the set condition is not satisfied. | 08-28-2008 |
20080239246 | Projector - A projector is provided which includes a distance measuring unit which can accurately measure distances to a plurality of points on a surface of a screen using light rays. The projector of the invention has the distance measuring unit for measuring distances to the plurality of points on the surface of the screen, which includes a plurality of light ray units for irradiating light rays onto the screen and one light receiving element for receiving the light rays which are reflected on the surface of the screen, and a tilt angle calculation unit for calculating a tilt angle of the screen relative to the projector based on the distances to the plurality of points on the surface of the screen which are measured by the distance measuring unit. | 10-02-2008 |
20080259288 | Rear projection display - A rear projection display includes a projector for projecting light from a light source as an optical image, an exterior cabinet for enclosing the projector, a projection screen provided for the exterior cabinet on which the optical image is projected, and two or more optical sensors provided in a region where the optical image is projected from the projector other than an image display region. | 10-23-2008 |
20080266528 | PROJECTION DISPLAY DEVICE - A projection lens unit and a projection mirror unit are moved relative to an illumination optical system, between a first position where an image is projected in a shape that is longer along a direction of projection onto a projection plane and a second position where an image is projected in a shape that is longer along a direction perpendicular to the direction of projection onto the projection plane. When the projection lens unit and the projection mirror unit are located in the first position, a vertically long image is projected onto the projection plane (portrait display). In this state, when the projection lens unit and the projection mirror unit are moved to the second position, a horizontally long image is projected onto the projection plane (landscape display). | 10-30-2008 |
20080284986 | Image distortion correcting mechanism of back-projection image display device and back-projection image display device - In a back-projection image display device, image light outputted from a projection device is reflected by a reflection mirror held by a base frame and projected onto the back of a screen, to display an image on the screen. An image distortion correcting mechanism includes adjustment mechanisms that deform the reflection mirror, drive units that generate driving force necessary for the deformation of the reflection mirror by the adjustment mechanisms, and a control substrate that supplies power to the drive units. The control substrate supplies power to the drive units in response to a control signal supplied from a remote control unit. This allows pin distortion and barrel distortion, as well as trapezial distortion to be corrected by remote control in the back-projection image display device. | 11-20-2008 |
20080291402 | Image processing system, projector, computer-readable medium, and image processing method - An image processing system and a projector project a calibration image onto a projection target, sense the calibration image to generate sensing information, and generate projection target region information based on the sensing information. The system and projector generate projection area information based on the sensing information, image distortion correction information based on the projection target region information and the projection area information, and correct an image signal based on the image distortion correction information so that image distortion is corrected. The system and projector project an image based on the image signal corrected by the distortion correction section, determine a first height/width ratio that indicates a height/width ratio of the projection target, generate the image distortion correction information to display an image at a first height/width ratio range and display an image at a desired height/width ratio when the first height/width ratio is not within the acceptable range. | 11-27-2008 |
20080297733 | Distortion Detection System and Distortion Detection Method - The present invention relates to a distortion detecting system and a distortion detecting method having a structure for efficiently detecting distortion of a projected image that is projected onto a projected surface by a projector. The distortion detecting system includes a photodetecting apparatus, and an analyzing apparatus. When a reference brightness image is projected onto the projected surface by the projector, the photodetecting apparatus forms the projected image on the projected surface onto the photosensitive surface of the photodetector, and outputs light intensity profile data that indicates a one-dimensional distribution of incident light intensity in each of a first direction and a second direction on an image for inspection formed on the photosensitive surface. The analyzing apparatus detects distortion of the projected image by analyzing the light intensity profile data in the respective first direction and second direction outputted from the photodetecting apparatus based on known information concerning the reference brightness image. | 12-04-2008 |
20090002643 | Shaped Mirror on a Projection Ray Path for Display Instruments - A projection display having a projection path through a shaped mirror positioned perpendicular with the screen. The shaped mirror positioned on a projection path reduces the depth of the projection display while eliminating image distortion at the center of the screen. | 01-01-2009 |
20090033881 | PROJECTION DISPLAY DEVICE AND DISPLAY METHOD - According to one embodiment, a projection display device comprises a light modulator configured to receive light from a light source and emit an optical image modulated based on an image signal, a projector configured to project the optical image emitted from the light modulator onto a screen, and a correction unit configured to correct a distortion of the optical image which is projected onto the screen with an optical axis of the projector being not perpendicular to the screen, wherein the correction unit corrects the optical image which is projected onto the screen so that a shape of the optical image becomes a rectangle and any one of boundary sides of a rectangular optical image is aligned with a long boundary side of a trapezoidal projectable area of the projector. | 02-05-2009 |
20090040472 | Projection Display Apparatus - A portable projection display apparatus ( | 02-12-2009 |
20090059182 | BEAM PROJECTION APPARATUS AND METHOD WITH AUTOMATIC IMAGE ADJUSTMENT - A beam projection apparatus and method with automatic image adjustment. A beam projection apparatus includes an actuator module being operable to move the beam projection apparatus, a beam projector being operable to project images, and a control module being operable to search surrounding structures around the beam projection apparatus and select a plane portion of the surrounding structures as a screen, to control the actuator module to move the beam projection apparatus for image display on the selected plane portion, and to control the beam projector to project the images on the selected plane portion. | 03-05-2009 |
20090059183 | DISTANCE MEASURING DEVICE AND PROJECTOR INCLUDING SAME DISTANCE MEASURING DEVICE - There are provided a small distance measuring device which enables an accurate distance measurement and has a wide range of measurable distances and a projector which is provided with the distance measuring device. | 03-05-2009 |
20090079945 | Image Stabilization in a Laser-Scanning Based Projector - A projector assembly includes a multi-pixel frame projector that sequentially projects each pixel making up a frame to a viewing surface, a movement detector coupled to the projector to detect a physical movement of the projector, and a movement compensator coupled to the projector, the movement compensator operable to transmit a correction signal to the projector, the correction signal capable of causing the projector to compensate for the detected movement. | 03-26-2009 |
20090079946 | Optical Projection System - An optical projection system includes an image generation element, a projection lens set for receiving an image from the image generation element, refracting the image and projecting the image out, and a reflector for reflecting the image from the projection lens set and projecting the image to a screen. The projection lens set includes an aspherical lens with a distortion coefficient larger than 0.5 for producing a pincushion distortion of the image and several other lenses, and the absolute value of the sum of the distortion coefficients of the other lenses are less than the distortion coefficient of the aspherical lens. The reflector produces a barrel distortion to the image for compensating a pincushion distortion of the image produced by the projection lens set. | 03-26-2009 |
20090141250 | Off-Axis Projection System and Method - A system and method for correcting optical distortion in an off-axis system is provided. The offset between the center of a display plane and the optical axis of the projection lens system is configured such that the offset is greater than half the vertical dimension of the display plane. In this manner, the distortion, such as a pincushion-type or barrel-type of distortion, is not symmetrical about the horizontal axis. In this scenario, the display plane, the projection lens system, a folding mirror, and/or the spatial light modulator may be tilted such that a keystone effect is induced. This keystone effect may be used to offset the distortion, particularly the pincushion-type or barrel-type of distortions. | 06-04-2009 |
20090174867 | SYSTEM AND METHOD FOR REDUCING IMAGE ARTIFACTS IN A PROJECTION DEVICE USING A SCROLLING REFRACTIVE ELEMENT - A system and method for reducing speckle and smearing phenomena caused by a coherent light source. The light beam from the coherent light source is preferably refracted by a rotating refractive element. The refracted beam is focused and projected through a light valve by a plurality of optical components. The rotation of the refractive element causes the beam to scroll across the surface of a light receiving element, which reduces the smearing effect. The rotation of the refractive element also causes the propagation path of the beam to vary, causing rays of the light beam to undergo relative phase shift, varying the interference pattern on the light receiving element, resulting in a reduction in the appearance of the speckle phenomenon. | 07-09-2009 |
20090174868 | Image processing system, projector, computer-readable storage medium, and image processing method - A projector is configured of a difference image generation section that generates a difference image between an all-white first calibration image and a second calibration image which includes an image having features at the center and periphery thereof, a center reference position detection section that detects a reference position of a center block area in the difference image, a peripheral reference position detection section that detects a reference position of a peripheral block area, and a projection area information generation section that generates projection area information indicating a position of a projection area, based on those reference positions. | 07-09-2009 |
20090195758 | MESHES FOR SEPARATELY MAPPING COLOR BANDS - A method includes generating a first plurality of meshes configured to map a first domain associated with a display surface to a second domain associated with an image capture device configured to capture a first image of the display surface, and generating a second plurality of meshes configured to map the second domain to a third domain associated with a first projector configured to display a second image onto the display surface. A third plurality of meshes is generated using the first plurality of meshes and the second plurality of meshes. The third plurality of meshes is configured to separately map a plurality of color bands between the first domain and the third domain. | 08-06-2009 |
20090207383 | PROJECTED IMAGE DISPLAY UNIT - There is provided a projected image display unit characterized by a display surface configured to display an image; projection means for projecting the image onto the display surface; and image capturing means for performing image capturing on the display surface, the image capturing means being placed on the same side of the display surface as the projection means, wherein the image capturing means is placed at a position so that the symmetrical position of the projection means with respect to the display surface is out of the range of the angle of view of the image capturing means. | 08-20-2009 |
20090207384 | PROJECTION APPARATUS AND DISTANCE MEASUREMENT METHOD - A projection apparatus including a projection drive control unit modulating an emitted light from a light source unit for each of a plurality of color components at predetermined time, and a projection distance acquisition unit irradiating light to the projection screen to acquire a distance to the projection screen, wherein the projection distance acquisition unit carries out laser distance measurement during a period the projection drive control unit modulates a color component of the emitted light to color components except one color component of a plurality of modulated color components. | 08-20-2009 |
20090231551 | Digital imaging system - The present invention provides a projection system capable of making corrections to the shape of a projected light beam to take into account multiple irregularities in a projection surface. The invention also provides a projection system capable of adjusting the variation of intensity of a light beam projected on a projection surface that is not normal to the central axis of the projection beam. | 09-17-2009 |
20090237620 | PROJECTOR AND REFLECTION APPARATUS - A projector includes a light source, a light modulator that modulates the light flux emitted from the light source in accordance with an image signal to form image light, a projection optical apparatus that enlarges and projects the image light, a reflection section having a reflection surface disposed along the direction in which the projection optical apparatus outputs the image light, the reflection surface reflecting the image light, and an adjustment section that adjusts the inclination angle of the reflection section with respect to the direction in which the image light travels. | 09-24-2009 |
20090244492 | AUTOMATED GEOMETRY CORRECTION FOR REAR PROJECTION - An automated geometry correction system and method for rear-projection systems is provided. The automated geometry correction system comprises at least one fiducial placed along each edge of the image screen to permit a correspondence between the image coordinate system of the projection engine, and the screen coordinate system of the image screen. Based on the established correspondence, an image warping algorithm is used to effect an inverse distortion for matching a source image to the projection engine and the image screen, thereby effecting the geometric correction. | 10-01-2009 |
20090244493 | IMAGE PROCESSING DEVICE, IMAGE DISPLAY APPARATUS, AND IMAGE PROCESSING METHOD - An image processing device includes a lens-shift amount acquisition section adapted to acquire an amount of shift of a projection lens of an image display apparatus, and an image signal correction section adapted to correct the image signal corresponding to a sub-pixel constituting a pixel in accordance with the amount of shift acquired by the lens-shift amount acquisition section. | 10-01-2009 |
20090290132 | Image Projection Display System - An image projection display system comprises a variable optical property element ( | 11-26-2009 |
20090310088 | Systems and methods for projecting - The present disclosure relates to systems and methods that are related to projection. | 12-17-2009 |
20090310089 | Systems and methods for receiving information associated with projecting - The present disclosure relates to systems and methods that are related to transmitting and receiving information associated with projection. | 12-17-2009 |
20100014056 | PROJECTION SYSTEM AND PROJECTOR - A projection system includes: a projection device mounted at a member that moves through space and projects an optical image; a detection device that detects relative position assumed in the space by a projection target surface onto which the optical image is projected and the projection device; and a control device that controls projection by the projection device in correspondence to the relative position detected by the detection device. | 01-21-2010 |
20100045942 | PROJECTION DISPLAY APPARATUS AND DISPLAY METHOD - A projection display apparatus for displaying an image on a projection plane by projection, includes: an image capturing unit capturing an image; an angle calculator calculating an angle of the projection plane relative to the projection display apparatus; a straight line detector detecting at least one reference line segment in the captured image; a line segment complementing section setting at least one complementary line segment in the captured image on the basis of the calculated angle so that an area on the projection plane corresponding to an area defined by the reference line segment and the complementary line segment is rectangular; and a keystone corrector correcting a keystone distortion of an image displayed on the projection plane on the basis of the reference line segment and the complementary line segment. | 02-25-2010 |
20100079733 | OPTICAL ENGINE AND WIDE ANGLE PROJECTION LENS MODULE THEREOF - A wide-angle projection lens module is provided, including a reflective convex aspheric mirror and a refractive lens group of positive refractive power. The following Conditions (1) to (2) are satisfied: | 04-01-2010 |
20100097580 | DISPLAY APPARATUS - A display apparatus that displays an image on a retina of a user, the display apparatus comprising: an image output unit ( | 04-22-2010 |
20100110394 | REAR PROJECTION IMAGE DISPLAY DEVICE - A rear projection image display device according to an aspect of the present invention for projecting an image from a projection device onto a screen from a rear side, includes a plane reflection mirror for changing an optical path of the image from the projection device, fixing members for fixing more than one points on the periphery of the reflection mirror, rod-shaped reinforcement members fastened along the periphery and arranged inside the periphery in the rear side of the reflection mirror, support members being movable in a direction perpendicular to a surface of the reflection mirror, for supporting predetermined points between the fixing members on the periphery of the reflection mirror. | 05-06-2010 |
20100141902 | SHORT THROW PROJECTION LENS WITH A DOME - The present invention relates to an outer dome configured to provide protection and optical correction to a system of projection optics and the output thereof. More particularly, an optical projection system having an optical offset of greater than 100% is comprised within a projector housing having an outer dome comprised of an optically active material mounted onto an opening approximately coinciding with the optical projection system's exit pupil. The outer dome is configured to be decenterized from the exit pupil (e.g., the center of the dome is offset from the exit pupil in one or more of an x, y, and z direction) such that it provides optical correction to a projected image. Therefore, an outer dome is configured to provide protection to optical elements provided therein and improvement of projected image quality (e.g., reduced image distortion, reduced aberration). | 06-10-2010 |
20100157253 | METHOD AND SYSTEM OF SCANNING LASER BEAM IMAGE PROJECTION - A projector ( | 06-24-2010 |
20100157254 | IMAGE PROJECTION APPARATUS AND CONTROL METHOD FOR SAME - In an image projection apparatus, a sensed image obtained by sensing a projection surface, which contains a projected image, is obtained. Then, a difference image obtained by removing the projected image from the sensed image is used to detect a region corresponding to a predetermined object such as a user's hand or a pointer. Then, a user operation is determined based on the position and temporal variations of a particular portion of the region corresponding to the predetermined object. | 06-24-2010 |
20100157255 | Projection optical system and visual display apparatus using the same - In a projection optical system | 06-24-2010 |
20100177283 | PROJECTOR AND CONTROL METHOD - A projector includes: a projecting portion that projects an image based on input image data; an image data producing portion that produces the image data and then outputs the image data to the projecting portion; an image sensor that captures the projected image and thus produces a captured image; a movement detection sensor that is arranged on a plane parallel to the imaging plane of the image sensor and produces movement information on the basis of the detected movement, the movement detection sensor being arranged at an angle in the direction not equal to the horizontal direction and vertical direction of the imaging plane; a determining portion that determines whether the movement information meets an adjustment condition or not; and a control portion that, when the movement information meets the adjustment condition, controls the image data producing portion so as to adjust the image data on the basis of the captured image. | 07-15-2010 |
20100238416 | PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS - A projection optical system for enlarging and projecting a light flux from an image display panel modulating an irradiation light, onto a screen in an oblique direction, the projection optical system includes: a lens system including a plurality of lenses, the lens system refracting the light flux from the image display panel; a single convex mirror reflecting the light flux from the lens system, the lens system and the convex mirror being arranged in an order from the image display panel; and a stop disposed in an optical path after an emission from the lens system to an incidence on the convex mirror. | 09-23-2010 |
20110037955 | LASER PROJECTION DISPLAY AND IMAGE DISTORTION CORRECTION METHOD FOR THE SAME - A laser projection display and a method of compensating for image distortion of the same stereoscopic liquid crystal display device having a touch panel and a method for manufacturing the same are disclosed. Herein, the method includes displaying a picture including a red image, a green image, and a blue image, selecting one of the red image, the green image, and the blue image so as to perform pixel alignment of the picture, calculating pixel coordinate values x+dx and y+dy corresponding to the selected image (herein, x represents the x coordinate value prior to alignment, y represents the y coordinate value prior to alignment, dx represents a varied x coordinate value after alignment, and dy represents a varied y coordinate value after alignment), calculating distortion compensation coordinate values X′ and Y′ corresponding to the pixel coordinate values x+dx and y+dy, and mapping the distortion compensation values X′ and Y′, thereby compensating for an image distortion occurring in the selected image. | 02-17-2011 |
20110080565 | IMAGE PROJECTING APPARATUS - An image projecting apparatus includes an image display element, an optical system that projects an image displayed on the image display element onto a screen, an optical element that shifts in a direction perpendicular to an optical axis of the optical system, an adjusting mechanism that can shift the optical element in the direction perpendicular to the optical axis, and a holding member that fixes the optical element to a lens barrel, wherein a combined Abbe number vdch of materials of the optical element with respect to a d-line, a combined focal length fdch of the optical element with respect to the d-line, and the pixel pitch P of the image display element satisfy an appropriate condition. | 04-07-2011 |
20110085146 | PROJECTION SYSTEM, PROJECTION APPARATUS, AND IMAGING MODULE - A projection system including a light valve, a lens, an arc reflector, and an arc screen is provided. The light valve is capable of providing an image beam. The lens is disposed in the transmission path of the image beam. The arc reflector has an arc reflective surface. The arc reflective surface is disposed in the transmission path of the image beam from the lens, so as to reflect the image beam. The arc reflective surface is curved in a first direction and not curved in a second direction substantially perpendicular to the first direction. The arc screen is disposed in the transmission path of the image beam reflected by the arc reflective surface. The arc screen is curved in the first direction and not curved in a third direction substantially perpendicular to the first direction. A projection apparatus and an imaging module are also provided. | 04-14-2011 |
20110141441 | IMAGE PROJECTION DEVICE - An object is to provide a image projection device which has a small size but can project an image having a high image quality. To achieve the object, in an image projection device, a reflection part which reflects a light flux from a light source is, while being rotated around a first axis by non-resonance driving, rotated by resonance driving around a second axis which is substantially perpendicular to the first axis, and thereby the light flux is deflected in a two-dimensional direction. By controlling the rotation of the reflection part, a correction for suppressing an image distortion along one scanning direction on a projection surface, and a correction for keeping substantially constant a scanning speed of the light flux along the other scanning direction on the projection surface, are performed. Here, the relationship of 10°<θ<70° is satisfied, where θ represents an angle of inclination of the light flux, which is projected to the projection surface, toward the other scanning direction relative to a normal line of the projection surface, in a case where the reflection part is in a central position of the rotations around the first and second axes. | 06-16-2011 |
20110255059 | Distortion Correction for Projector - An image processing device for a projector including an image formation section that emits light of an image, and a projection system that projects the emitted light onto a projection surface. The image processing device has a distortion correction technique for images displayed on the projection surface. The image processing device has a target display area determination section that determines, in a display area serving as a reference on the projection surface, based on a current value of a parameter, any of target display areas set for values possibly taken by the parameter within an allowable range to be targeted on a distortion-free image for display on the projection surface; a reference formation area determination section that determines a reference formation area to be formed with a virtual distorted image and a correction application section that generates corrected image data for supply to the image formation section. | 10-20-2011 |
20110261328 | Apparatus and Method for Reducing Speckle in Display of Images - An apparatus and method of reducing speckle in projection of images is provided that includes the elements or features of producing a first image and displacing the first image to produce a second image that will reduce speckle relating to the first image when the first image and the second image are displayed on a display medium. | 10-27-2011 |
20110267587 | PROJECTOR, PROJECTED IMAGE ADJUSTMENT METHOD, AND PROGRAM FOR PROJECTING AN IMAGE WHILE CORRECTING THE SHAPE OF THE IMAGE - A projector includes a projection section which projects a calibration image onto a projection target through a projection panel, a shape determination section which determines a shape of the projection target, a correction target area setting section which sets a correction target area, an aspect ratio calculation section which calculates an aspect ratio of the correction target area, a determination section which determines whether or not a value which indicates a difference between the aspect ratio of the correction target area and a reference aspect ratio satisfies a set condition, and an image generation section which generates an image having the shape of the correction target area on the projection panel when the set condition is satisfied, and generates an image having the reference aspect ratio on the projection panel when the set condition is not satisfied. | 11-03-2011 |
20110292351 | IMAGE PROJECTION APPARATUS AND INTERCHANGEABLE LENS THEREFOR - The image projection apparatus includes a light modulating element modulating light according to an image signal, a correcting part performing correction processing on the image signal to decrease geometric distortion in a projection image by using correction data, a memory storing first correction data corresponding to interchangeable optical units, and a controller acquiring identification information of the interchangeable optical unit attached to the apparatus, reading the first correction data corresponding to the acquired identification information from the memory, and setting the read first correction data as the correction data for the correction processing. The controller acquires, when no first correction data corresponding to the acquired identification information is stored in the memory, second correction data stored in a memory in the attached interchangeable optical unit, and sets the acquired second correction data as the correction data for the correction processing. | 12-01-2011 |
20110292352 | POSITION ADJUSTMENT AMOUNT CALCULATION METHOD OF LIGHT MODULATION DEVICE, POSITION ADJUSTMENT AMOUNT CALCULATION DEVICE OF LIGHT MODULATION DEVICE AND PROJECTOR - A method for calculating a position adjustment amount of projected image includes a first image step of obtaining first image data which is obtained by an image capturing device imaging first feature points which are displayed using light modulated by a first light modulation device, a second imaging step of obtaining second image data which is obtained by the image capturing device imaging a second feature point which is displayed using light modulated by a second light modulation device, an adjustment amount calculation step of calculating an adjustment amount based on the first image data and the second image data. | 12-01-2011 |
20120002178 | Image Stabilization and Skew Correction for Projection Devices - Methods, systems, and computer-readable media for generating a projected image are provided. Movement measurements are received from an accelerometer within a projection device. A determination is made as to whether the movement measurements indicate movement of the projection device. Upon determining that the movement measurements indicate movement of the projection device, a movement correction factor is determined based on the movement measurements to compensate for the movement of the projection device. The projection device is caused to generate a projected image according to the movement correction factor. | 01-05-2012 |
20120008101 | DISPLAY SYSTEM - A projection apparatus for projecting an input image onto the projection surface includes a correction unit configured to correct distortion of an image to be displayed on the projection surface, a projection unit configured to project an image corrected by the correction unit, a communication unit configured to communicate with an external imaging apparatus, and a control unit configured to control the correction unit, wherein the control unit transmits distortion information concerning distortion of an image to be displayed on the projection surface to the imaging apparatus via the communication unit. | 01-12-2012 |
20120008102 | On-Axis Projection Lens with Offset - A method and system of projecting images with high degrees of image offset while limiting the physical offset of the projection lens elements. The methods and systems provided limit the displacement of the optical elements relative to the optical axis of the display panel and enable a very thin, efficient projector. | 01-12-2012 |
20120008103 | Ray Casting for Coherent Light Internal Projection Systems - A system and method for projecting coherent (e.g., laser) light imagery onto an interior surface of a 3-dimensional projection surface is provided. In some aspects, there is provided a coherent light source, which may comprise more than one wavelength (color) component such as red, green and blue laser sources. In some aspects, one or more light component is directed through optical elements within the system so as to modulate the source light with image data or information by way of a microdisplay apparatus. In addition, the coherent light rays are reflected or redirected as needed by optical lens assemblies, which can include positive lens elements, negative lens elements, mirrors, and/or prisms. The rays move from their source to the microdisplay and on through the various optical assemblies towards the surface of the projection screen. In some aspects, the rays move through the system with little or no ray crossing because of the simplicity of the construction of the same. Also, in some embodiments, there is no need for forming intermediate imagery. In some aspects, the coherent light forms well-defined images on the projection surfaces at a variety of distances from the optical assemblies, therefore allowing flexible use of various 3-dimensional projection surfaces of almost arbitrary size and shape. | 01-12-2012 |
20120044464 | SPECKLE REMOVAL FOR A LASER SCANNING PROJECTOR - An apparatus and method for reducing the visibility of speckle in coherent light comprises propagating the coherent light through a multimode optical waveguide | 02-23-2012 |
20120062855 | PROJECTOR AND METHOD OF CONTROLLING PROJECTOR - A projector includes a projection unit, an imaging unit, a correction control unit acquiring first correction information based on a first captured image acquired by capturing a distortion detection image projected onto a projection surface, and a distortion correction unit performing distortion correction based on the first correction information. The correction control unit, in a case where second distortion correction needs to be performed after the distortion correction unit, performs first distortion correction based on the first correction information, allows the projection unit to project the distortion detection image without transforming the distortion detection image by using the distortion correction unit allows the imaging unit to capture the projected distortion detection image so as to be acquired as a second captured image, acquires second correction information based on the second captured image, and allows the distortion correction unit to perform the second distortion correction based on the second correction information. | 03-15-2012 |
20120081678 | PROJECTION DISPLAY APPARATUS AND IMAGE ADJUSTMENT METHOD - A projection display apparatus displays a test pattern image formed of at least parts of three or more line segments defining three or more intersection points. The projection display apparatus computes a positional relationship between the projection display apparatus and the projection surface, based on the three or more intersection points. The test pattern image has a distortion in an opposite direction to a direction of the lens. | 04-05-2012 |
20120105813 | PROJECTOR AND METHOD OF CONTROLLING PROJECTOR - In at least one embodiment of the disclosure, a projector comprises an imaging unit that photographs a projection surface and acquires a first photographed image during a projection of a featured image at a first time point and acquires a second photographed image during the projection of the featured image at a second time point different from the first time point. An image processing unit generates a reference image based on the first photographed image and generates a comparative image based on the second photographed image. A movement detecting unit detects a change in a relative position of the projector with respect to the projection surface by using the reference image and the comparative image generated by the image processing unit. | 05-03-2012 |
20120140188 | IMAGE DISPLAY APPARATUS AND INFORMATION PROCESSING APPARATUS HAVING THE SAME AND METHOD OF CONTROLLING IMAGE DISPLAY APPARATUS - An image display apparatus detects a projection angle of a projection unit that projects a screen image on a screen and is capable of vertically changing the projection angle, and corrects trapezoidal distortion of the screen image according to the projection angle. The image display apparatus changes the amount and direction of trapezoidal distortion correction based on the projection angle. The image display apparatus also determines whether a projection mode is projection upward to a wall or projection to a ceiling and changes the direction of trapezoidal distortion correction for projection upward to the wall and projection to the ceiling. Specifically, for projection upward to the wall, a correction factor is positive and an upper edge portion of the screen image is compressed for correction; and for projection to the ceiling, a correction factor is negative and a lower edge portion of the screen image is compressed for correction. | 06-07-2012 |
20120140189 | Projection Display Apparatus - A projection display apparatus includes: an imager; a projection unit; an acquisition unit; a shape correction unit that performs a shape correction process for projecting a shape correction pattern image on the projection plane, calculating shape correction values from the picked-up image of the shape correction pattern image, and correcting the shape of the image projected on the projection plane, based on the shape correction values; and a coordinate calibration unit that performs an interactive calibration process for projecting a calibration pattern image on the projection plane, calculating calibration correction values from the picked-up image of the calibration pattern image, associating coordinates of the picked-up image captured by the image pick-up element and coordinates of the image projected on the projection plane with each other, based on calibration correction values. The interactive calibration process is performed after the shape correction process. | 06-07-2012 |
20120170005 | PROJECTION TYPE DISPLAY DEVICE - A projection type display device includes: optical modulation elements, an illumination optical system that includes light sources for emitting light from light emitting units, and condensing optical systems; and vibrator. The optical modulation elements have optical modulation surfaces for modulating incident light based on image information. The condensing optical systems condense the light from the light sources to form images on the optical modulation surfaces. A vibrator vibrates components of the illumination optical system to move areas on the optical modulation surfaces that are irradiated with the light away from the illumination optical system. | 07-05-2012 |
20120206696 | PROJECTION DISPLAY APPARATUS AND IMAGE ADJUSTING METHOD - A projection display apparatus displays a test pattern image including three or more intersections configured by three or more line segments. The projection display apparatus calculates a positional relationship between the projection display apparatus and the projection plane based on the three or more intersections included in the test pattern image. The test pattern image is included within a display frame. | 08-16-2012 |
20120212710 | METHOD OF MEASURING ZOOM RATIO OF PROJECTION OPTICAL SYSTEM, METHOD OF CORRECTING PROJECTION IMAGE USING THE METHOD, AND PROJECTOR EXECUTING THE CORRECTION METHOD - A method of measuring a zoom ratio of a projection optical system adapted to project image light representing an original image on a projection screen, the method includes: (a) projecting and displaying a measuring image including a measurement point on the projection screen so that the measurement point is displayed at a position with an offset from an optical axis of the projection optical system; (b) detecting a projected measurement point, which is the measurement point projected and displayed on the projection screen, from a measurement point detection position having a fixed position relative to the projection optical system; and (c) determining the zoom ratio using position information of the detected projected measurement point and correspondence between the position information and the zoom ratio, the correspondence being prepared previously. | 08-23-2012 |
20120218523 | PROJECTION TYPE IMAGE DISPLAY DEVICE - A projecting unit projects a focus adjustment pattern onto a screen. An image capturing unit captures an image of the focus adjustment pattern and obtains the image as a captured image. A captured image analyzing unit calculates contrast data serving as an evaluation value indicating a degree of achievement in focusing the captured image. Based on the calculated contrast data, a control unit adjusts focus of the projecting unit so as to bring projected image light into a focus on the projection surface. The focus adjustment pattern has a first region and a second region different from each other in brightness. The control unit adjusts configurations of the first region and the second region in the focus adjustment pattern such that at least one of resolution of brightness and contrast becomes uniform in the captured image. | 08-30-2012 |
20120236266 | IMAGE PROJECTION APPARATUS - An image projection apparatus includes: an optical image generating unit to generate an optical image based on image data; a projection surface; a projection optical system including a plurality of optical elements and configured to form an projected image, onto a projection surface, coupled with the optical image generated by the optical image generating unit; a projected image shifting unit to shift the projected image by changing a posture of at least one of the plurality of optical elements included in the projection optical system; a tilt sensor to detect a posture of the optical element of which posture is changed by the projected image shifting unit; and a trapezoidal distortion correction unit to correct the optical image generated by the optical image generating unit so as to prevent the trapezoidal distortion of the projected image from occurring based on the detection result of the tilt sensor. | 09-20-2012 |
20120249977 | DISPLAY APPARATUS FOR AN OPERATING ROOM - A display apparatus for displaying medical information in a medical treatment facility includes an image surface to depict information, such that the image surface is configured so that it can be converted by reshaping from an operating condition into a resting condition and vice versa. | 10-04-2012 |
20120257173 | PROJECTION APPARATUS, CONTROL METHOD THEREOF, AND PROGRAM- STORING STORAGE MEDIUM - A projection apparatus capable of projecting an image with a user interface screen superimposed thereon includes a detection unit configured to detect a distortion amount of the image, a calculation unit configured to calculate a parameter for correcting the image based on the distortion amount detected by the detection unit, and a determination unit configured to determine a shape of the user interface screen based on the parameter. | 10-11-2012 |
20120262680 | Free Form Optical Redirection Apparatus and Devices Using Same - A projection system ( | 10-18-2012 |
20130021585 | PROJECTOR AND METHOD OF CONTROLLING PROJECTOR - A projector includes a deformation ratio calculating unit that calculates a first deformation ratio on a reference point set in a first image when performing a correction process with respect to a first image data, a deformation ratio determination unit that determines a second deformation ratio of the first image based on the first deformation ratio calculated by the deformation ratio calculation unit, a synthesis image generation unit that generates synthesis image data indicating a synthesis image which is generated by synthesizing a second image indicated by second image data and the first image with a size changed based on the second deformation ratio, a correction unit that performs a correction process with respect to the synthesis image data, and a projection unit that projects the synthesis image based on the synthesis image data which is subjected to the correction process. | 01-24-2013 |
20130021586 | Frequency Control of Despeckling - A method and apparatus that reduces laser speckle by using stimulated Raman scattering in an optical fiber. The pulse repetition frequency of the laser is adjusted to control aspects of the laser light such as color or despeckling. In DLP projection systems, an optical monitor may be used to send information to a bit sequence, and the bit sequence may control the pulse repetition frequency of the laser based on the optical monitor signal. | 01-24-2013 |
20130027673 | SPECKLE REDUCER AND PROJECTION UNIT INCLUDING A SPECKLE REDUCER - The present speckle reduction device comprises an optical element intended to be passed through by the coherent light beam to be treated. It also includes means able to cause heating of the said optical element; and a cooling element coupled to the said optical element so as to be able to cool the latter. A control module is configured to control the heating means and the cooling element so as to create thermal perturbations in the optical element, causing corresponding variations in the refractive index of the said optical element. The optical element is a piezoelectric crystal which is excited in a specific deformation mode causing its heating. | 01-31-2013 |
20130050660 | PROJECTOR - A projector is provided. The projector includes a projection unit which projects an image, a case which supports the projection unit, a reflecting mirror which includes a reflecting surface which faces the projection unit and has a curvature, and reflects light, a first fixing part which is disposed on a center axis of the reflecting minor on an outer area of the reflecting surface, and a second fixing part and a third fixing part which are disposed on the outer area of the reflecting surface and which form a triangle with the first fixing part. Each of the first, second, and third fixing parts is configured to fix the reflecting mirror to the case. | 02-28-2013 |
20130070213 | Projector and Projector System - This projector includes a laser beam generation portion outputting a laser beam, an image projection portion, including a scanning portion scanning the laser beam, projecting an image on a projection area, an image correction portion correcting distortion of the projected image on the basis of projection condition information, a photoreceiving portion receiving the laser beam reflected by a detection object, and a position acquisition portion acquiring the position of the detection object on the basis of photoreceiving information of the laser beam received by the photoreceiving portion and the projection condition information employed by the image correction portion for correcting the image. | 03-21-2013 |
20130077059 | DETERMINING MOTION OF PROJECTION DEVICE - Example embodiments disclosed herein relate to determining a motion based on projected image information. Image information is projected onto an external surface from a device. Sensor information about the external surface and/or projection is received. Motion of the device is determined based on the sensor information. | 03-28-2013 |
20130077060 | PROJECTOR CONTROL DEVICE AND COMPUTER-READABLE RECORDING MEDIUM - A corrector corrects a main image acquired by an image acquirer based on correction setting acquired by a correction setting acquirer, and stores corrected main image in a buffer. An unused area detector detects the area that has not stored the corrected main image in the buffer, and transmits the result to a sub-image selector. The sub-image selector selects, among sub-image candidates registered in a sub-image information memory, a candidate that can be displayed on the unused area and has the highest priority as a sub-image. The sub-image controller executes a program stored in the sub-image displaying program memory, and displays the selected sub-image on the unused area. | 03-28-2013 |
20130083298 | PROJECTOR AND METHOD FOR CONTROLLING PROJECTOR - A projector that projects an image allows selection of one of a plurality of controlled objects located in correspondence with the vertices of the contour of the image and the sides of the contour, moves the selected controlled object within the image based on input operation, and corrects the contour of the image based on the moved controlled object. | 04-04-2013 |
20130094002 | PROJECTION SYSTEM USED IN A VEHICLE - A projection system used in a vehicle including a projection apparatus, a projection screen, and an image correction module is provided. The projection apparatus provides an image beam. The projection screen receives the image beam. The image beam forms an image on the projection screen. The projection screen is a non-flat plane. The image correction module corrects the image beam to compensate a distortion of the projected image based on the surface contour of the image screen. | 04-18-2013 |
20130107227 | PROJECTOR DEVICE, DISTORTION CORRECTION METHOD, AND RECORDING MEDIUM STORING DISTORTION CORRECTION PROGRAM | 05-02-2013 |
20130194554 | PROJECTOR AND METHOD FOR PROJECTING IMAGE FROM PROJECTOR - A projector that modulates light emitted from a light source and projects the modulated image light on a projection surface, the projector including: an object detection unit for determining the position of an object that blocks projection of the image light; a distance detection unit for determining the distance to the object; and a projection control unit for determining an avoidance area where the object prevents the image light from reaching the projection surface based on the position of the object determined by the object detection unit and the distance to the object determined by the distance detection unit and projecting the image light in an area other than the avoidance area. | 08-01-2013 |
20130201457 | PROJECTION DISPLAY DEVICE - A projection display device includes an optical modulation element configured to modulate light outputting from a light source, and a projection unit configured to project light modulated by the optical modulation element on a projection screen. The projection display device includes an element control unit that controls the optical modulation element to display a test pattern image, an acquiring unit that acquires an image obtained by capturing the test pattern image from an image capture element that captures the test pattern image projected on the projection screen, and an adjusting unit that adjusts an image projected on the projection screen on the basis of the capture image acquired by the acquiring unit. The element control unit controls the optical modulation element such that a guidance image that guides focus adjustment of the image projected on the projection screen is displayed. | 08-08-2013 |
20130314675 | PROJECTION ZOOM LENS AND PROJECTION DISPLAY APPARATUS - A six group projection zoom lens downsized with broadened angle of view while aberrations are satisfactorily corrected over the entire zoom range, including a negative lens group having a negative power, a second lens group having a positive power, a third lens group having a positive power, a fourth lens group having a negative power, a fifth lens group having a positive power, and a sixth lens group having a positive power in this order from the magnification side and is configured telecentric on the reduction side. The first and sixth lens groups are fixed while the second to fifth lens groups are moved independently of each other at the time of zooming. The fifth lens group includes a plurality of lenses and a biconvex lens is disposed on the most magnification side. The projection zoom lens satisfies conditional expressions (1): (R | 11-28-2013 |
20130321779 | METHOD OF REDUCING SPECKLES IN LIQUID-CRYSTAL DISPLAY WITH COHERENT ILLUMINATION - Disclosed is a method for reducing speckling in liquid crystal displays with coherent illumination. The method consists of providing a liquid-crystal display illuminated, e.g., with a laser light, in which the image is formed by passing the light through the light redirecting holographic elements arranged in a matrix pattern, then changing the direction of the beams emitted from the holographic elements by passing the emitted beams through the polarization-changing liquid crystal elements, and converting the image-carrying beams produced by the liquid crystal elements into a visible image by passing them to a viewer through a polarization analyzer. | 12-05-2013 |
20130329196 | PROJECTION SYSTEM AND PROJECTOR - A projection system performs projection on a projection surface using a plurality of projectors including a first projector and a second projector. The projection system projects, using the first projector, a first guide in a position a predetermined amount of a margin spaced apart from a border of a projection region where an image is projected and projects, using the second projector, a second guide distinguishable from the first guide. | 12-12-2013 |
20130342816 | PROJECTOR, IMAGE DISPLAY SYSTEM, AND PROJECTOR CONTROL METHOD - A second projector projects and displays a measurement pattern on a projection screen while a first projector projects and displays another measurement pattern on the projection screen. The second projector causes an imaging unit to acquire a captured image including projection images of the two measurement patterns are captured, and detects coordinates of measurement points which are represented in the measurement patterns from the captured image. The second projector corrects the projection target image based on the coordinates such that the projection image by the first projector and its own projection image are in a desired relationship. | 12-26-2013 |
20140002802 | PROJECTION APPARATUS AND PROJECTION LENS THEREOF | 01-02-2014 |
20140049756 | IMAGE PROJECTION APPARATUS AND CONTROL METHOD THEREOF - An image projection apparatus comprises a projection unit configured to project an image onto a projection plane, a correction unit configured to correct a range of the image projected by the projection unit, a deformation unit configured to deform the projected range of the image according to a designated correction point, and a control unit configured to optically change the projected range of the image projected by the projection unit according to a designation of an outside of a predetermined range as the correction point. | 02-20-2014 |
20140071409 | IMAGE PROCESSING DEVICE, PROJECTOR, AND IMAGE PROCESSING METHOD - An image processing device is capable of suppressing the influence of the direction in which the image is projected on the projection surface to thereby improve the accuracy of the focus adjustment. The image processing device includes a detection section adapted to detect information regarding a direction in which an adjusting image for adjusting focus of an image to be projected on a projection surface is projected on the projection surface, and an adjusting image acquisition section adapted to obtain the adjusting image different in accordance with the information regarding the direction detected by the detection section. | 03-13-2014 |
20140085613 | UNDERWATER IMAGE PROJECTION CONTROLLER WITH BOUNDARY SETTING AND IMAGE CORRECTION MODULES AND INTERFACE AND METHOD OF USING SAME - An underwater projection system, a controller and method of controlling are herein described. The controller providing, at least in part, a boundary setting module or methodology and/or an image correction module or methodology through a user interface for the underwater projection system. A user interface is provided to enable user control and input and adjustment of the image controller from an observation point outside of the media of the underwater projection system, while the adjustments are made in-situ. An optional automated edge or edge and surface detection system is also contemplated to assist in boundary detection within the water feature for the underwater image projection system. | 03-27-2014 |
20140092369 | IMAGE OUTPUT DEVICE, IMAGE OUTPUT METHOD, AND PROGRAM - There is provided an image output device including a projectable region calculating unit that calculates a projectable region which is a region on a screen in which laser beam is projectable based on a trajectory in which scanning with the laser beam is performed using information specifying the screen onto which an image is projected by two-dimensional scanning with the laser beam, a projection window setting unit that causes the laser beam to be emitted and sets a projection window serving as a range in which the image is projected in the projectable region, and a generating unit that generates a pixel value of each of positions corresponding to pixels included in the image within the projection window on the screen for each pixel in a manner that the image is projected in the range set by the projection window. | 04-03-2014 |
20140118703 | LASER PROJECTION SYSTEM - A laser projection system is provided. The laser projection system comprises a laser light source, an optical element and a lens module. The laser light source provides a laser beam. The optical element has a first surface and a second surface. The laser beam is totally reflected by the first surface to pass through the second surface. The lens module is disposed beside the second surface of the optical element for reflecting the laser beam passing through the second surface, such that the reflected laser beam is projected on a projection screen. | 05-01-2014 |
20140160443 | PROJECTOR AND DISPLAY CONTROL METHOD FOR PROJECTOR - A projector, that projects an image, includes a light source, a liquid crystal panel that modulates light output from the light source and forms an image in response to input image data, a projection optical device that projects the image formed by the liquid crystal panel, a control device that controls the liquid crystal panel, and an acceleration sensor that detects a position of the projector. The control device includes a determination unit that determines whether or not the position detected by the acceleration sensor is a predetermined position, and a correction unit that corrects an orientation of the image data so that a longer side of the image data may coincide with a longer side of an image formation area of the liquid crystal panel if the determination unit determines that the detected position is the predetermined position. | 06-12-2014 |
20140176917 | PROJECTOR, IMAGE PROJECTING SYSTEM, AND IMAGE PROJECTING METHOD - A projector system may include a camera, a controller unit and a projecting unit. The camera may pick up a first image of a projection surface by visible light and a second image of the projection surface by a decreased visible light. The controller unit may perform a keystone distortion correction processing on a basis of the first image and perform an interactive processing on a basis of the second image. The projecting unit may project an image based on the performed keystone distortion correction. | 06-26-2014 |
20140218695 | ORTHOGONALLY DISPOSED PROJECTION SURFACES - A system for projecting changeable electronic content across multiple display surfaces. The system includes display surfaces arranged at a non-zero angle with respect to one another, such as three orthogonal display surfaces in the corner of a rectangular shaped product container. Changeable electronic content, including video and digital still images, is converted such that, when the projector receives and projects the content to the multiple display surfaces, the content is displayed undistorted to a viewer. | 08-07-2014 |
20140268070 | DISTORTION CORRECTION FOR PROJECTOR - An image processing device for a projector including an image formation section that emits light of an image, and a projection system that projects the emitted light onto a projection surface. The image processing device has a distortion correction technique for images displayed on the projection surface. The image processing device has a target display area determination section that determines, in a display area serving as a reference on the projection surface, based on a current value of a parameter, any of target display areas set for values possibly taken by the parameter within an allowable range to be targeted on a distortion-free image for display on the projection surface; a reference formation area determination section that determines a reference formation area to be formed with a virtual distorted image and a correction application section that generates corrected image data for supply to the image formation section. | 09-18-2014 |
20140285776 | PROJECTION APPARATUS, PROJECTION METHOD AND PROJECTION PROGRAM MEDIUM - A CPU controls an attitude adjustment unit to change the lengths of legs of an electric leg part independently of each other so that a roll angle is changed to roll a projected image, and controls an image converter to correct the projected image to be a rectangular image on a projection target based on the changed roll angle. | 09-25-2014 |
20140293243 | PROJECTOR AND ADJUSTMENT METHOD - A projector includes a projection section that projects a plurality of patterns having lightness values different from each other, an imaging section that captures an image of the plurality of patterns projected by the projection section, and a projection state adjustment section that adjusts, based on any of the plurality of patterns captured by the imaging section, a projection state in which the projection section performs projection. | 10-02-2014 |
20140320827 | NON-LINEAR PHOTOMETRIC PROJECTOR COMPENSATION - The present disclosure is related to a method for calibrating a projector. The method includes receiving by a processing element one or more mapping images. After receiving the images, the method includes defining by the processing element a non-linear color mapping function, the color mapping function mapping pixels between the projector and a camera used to capture the mapping images. The method then includes determining by the processing element a compensation image using the color mapping function. The compensation image corresponds to an input image and takes into account variations in the surface onto which the input image is to be projected. | 10-30-2014 |
20140340654 | PROJECTION OPTICAL SYSTEM AND PROJECTION-TYPE IMAGE DISPLAY APPARATUS - A projection-type image display apparatus includes a display device and a projection optical system. The projection optical system includes a first lens group having a positive power as a whole, and a second lens group having a negative power as a whole. The second lens group includes a first lens and a second lens in an order from the display device side, both of which have negative powers. When the first lens is moved toward the display device and the second lens is moved away from the display device with reference to positions of the first lens and the second lens in a direction of an optical axis when an image surface is planar, a focal position of the peripheral light becomes closer to the projection optical system in the direction of the optical axis than a focal position of the on-axis light, and the image surface is made concave to the projection optical system side. Further, when the first lens is moved away from the display device and the second lens is moved toward the display device, the focal position of the on-axis light becomes closer to the projection optical system in the direction of the optical axis than the focal position of the peripheral light, and the image surface is made convex to the projection optical system side. In this way, a curvature of the image surface formed by the projection optical system is changed. | 11-20-2014 |
20150015852 | PROJECTOR AND CONTROL METHOD FOR THE PROJECTOR - A projector includes a projecting unit configured to project an image on a projection surface, a projection control unit configured to cause the projecting unit to project a correction pattern including a first pattern and a second pattern, and a correction control unit configured to detect the first pattern and the second pattern included in the projected correction pattern and correct distortion of the projected image. The correction control unit detects the second pattern projected on a screen and detects the position of the first pattern on the basis of the position of the detected second pattern. | 01-15-2015 |
20150022786 | Projector System and Projector - A projector system includes a projector including a light projection portion projecting an image and a control portion and a light reflector including a mirror portion reflecting light constituting the image projected by the projector to a prescribed region, a drive portion moving the mirror portion, and a position detecting portion capable of detecting the position of the mirror portion. The control portion of the projector is configured to acquire positional information of the mirror portion from the light reflector and switch the image projected by the projector on the basis of the positional information of the mirror portion. | 01-22-2015 |
20150042964 | PROJECTOR AND CONTROL METHOD FOR THE PROJECTOR - A projector includes a projecting unit including a projection optical system and configured to project an image on a screen SC, a lens driving unit configured to perform focus adjustment for the projection optical system, a trapezoidal-distortion correcting unit configured to perform distortion correction processing for correcting distortion of the image projected by the projecting unit, and a projection control unit configured to cause the trapezoidal-distortion correcting unit to execute the distortion correction processing until a completion condition for the distortion correction processing holds after a start condition for the distortion correction processing holds and restrict the execution of the focus adjustment by the lens driving unit while the projection control unit causes the trapezoidal-distortion correcting unit to execute the distortion correction processing. | 02-12-2015 |
20150042965 | PROJECTED TELEVISION DEVICE AND SCREEN - A front projection display device is provided including an image-generating source configured to generate an image, a wide angle lens system adapted to receive the image, and a screen. The wide angle lens system may be configured to increase distortion of the image in a first stage and decrease distortion of the image in a second stage. The screen may be configured to receive the image from the wide angle lens system on a first side and reflect the image back to a viewer on the first side. In another embodiment, a screen is provided for a front projection system, the screen may be configured to receive light from a steep angle and may include any number of surface topographies configured to reflect light back to the viewer along a desired viewing plane. | 02-12-2015 |
20150062542 | Automatic Keystone Correction in a Projection System - A method for automatic keystone correction in a projection system is provided that includes rectifying a first image to be projected using current keystone correction parameters to generate a first rectified image, projecting, by a projector in the projection system, the first rectified image on a projection surface, determining whether or not current keystone correction parameters are providing sufficient keystone correction after the first rectified image is projected, rectifying a second image to be projected using the current keystone correction parameters to generate a second rectified image if the current keystone correction parameters are providing sufficient keystone correction, computing new keystone correction parameters if the current keystone correction parameters are not providing sufficient keystone correction and rectifying the second image to be projected using the new keystone correction parameters to generate the second rectified image, and projecting, by the projector, the second rectified image on the projection surface. | 03-05-2015 |
20150138512 | INFORMATION PROCESSING APPARATUS, IMAGE PROJECTING APPARATUS, AND METHOD FOR PROVIDING DISTORTION CORRECTION INSTRUCTION - An information processing apparatus comprises a confirming unit that makes a confirmation request asking whether or not an image projecting apparatus has a distortion correction function to previously correct distortion of a projection image due to projection, to the image projecting apparatus; an instructing unit that issues to the image projecting apparatus a distortion correction instruction to perform distortion correction on the projection image and project the projection image, when the image projecting apparatus has the distortion correction function; and a transmitting unit that transmits the projection image to the image projecting apparatus. | 05-21-2015 |
20150146175 | LIGHT MODULATOR SYSTEM INCLUDING RELAY OPTICS FOR CORRECTING OPTICAL DISTORTIONS - A relay lens system is provided. The relay lens system comprises: an air-spaced doublet comprising: a biconvex lens and a negative meniscus lens, an optical axis of the air-spaced doublet offset between the biconvex lens and the negative meniscus lens, each of the biconvex lens, the negative meniscus lens, an air space there between and an offset of the optical axis there between are selected to adjust the coma in an image travelling there through; and, a pair of cylindrical lenses, cylindrical with a relay optical path through the system, each of the pair of cylindrical lenses, and a respective air space there between, selected to adjust the astigmatism in the image. | 05-28-2015 |
20150323860 | DETERMINING MOTION OF PROJECTION DEVICE - Example embodiments disclosed herein relate to determining a motion based on projected image information. Image information is projected onto an external surface from a device. Sensor information about the external surface and/or projection is received. Motion of the device is determined based on the sensor information. | 11-12-2015 |
20150338724 | PROJECTOR - A projector includes a lens shift mechanism that is capable of lens shift of shifting the lens in an upward/downward direction or a leftward/rightward direction, a distortion correction information input section that allows input of distortion correction information used to correct distortion of projected image light projected on a projection surface, a shift correction information input section that allows input of shift correction information relating to the lens shift, and an image generation section that generates the image based on the distortion correction information. The shift correction information input section has an input menu image. The input menu image contains choices for inputting the shift correction information. The choices include a maximum amount of lens shift of the lens in at least one of the upward/downward direction and the leftward/rightward direction. The image generation section generates the image based on the distortion correction information and the shift correction information. | 11-26-2015 |
20160100144 | PROJECTION SYSTEM AND PROJECTOR - A projection system performs projection on a projection surface using a plurality of projectors including a first projector and a second projector. The projection system projects, using the first projector, a first guide in a position a predetermined amount of a margin spaced apart from a border of a projection region where an image is projected and projects, using the second projector, a second guide distinguishable from the first guide. | 04-07-2016 |
20160116831 | IMAGE DISPLAY ELEMENT HOLDING MECHANISM, PRISM UNIT, AND PROJECTOR - A holding mechanism for holding an image display element to a prism includes: a first fixing member fixed to the prism by an adhesive; and a second fixing member, which is fixed to the first fixing member using a screw, and which has the image display element directly or indirectly fixed to the second fixing member. A protruding section is provided at the periphery of a hole to be used for the purpose of fixing using the screw, and at the time of fixing the second fixing member to the first fixing member using the screw, the first fixing member and the second fixing member are directly or indirectly brought into contact with each other at the protruding section such that deformation due to screwing of the screw does not generate within a bonding region of the first fixing member. | 04-28-2016 |
20160377963 | ILLUMINATION OPTICAL SYSTEM, OPTICAL ENGINE, AND IMAGE PROJECTION APPARATUS - An illumination optical system is provided that is configured to guide light emitted from a light source to an image generation unit that is arranged to be movable in a direction perpendicular to incoming light and is configured to generate an image by reflecting the incoming light. The illumination optical system includes a first lens that is arranged to be movable in a direction perpendicular to an optical axis of the first lens, a second lens that is arranged to be movable in a direction that changes a face-to-face distance between the first lens and the second lens, and a lens position control unit configured to displace the first lens and the second lens. | 12-29-2016 |
20220141436 | PROJECTION DEVICE AND PROJECTION IMAGE CORRECTION METHOD THEREOF - A projection device and a projection image correction method are provided. Four target coordinates of four target vertices forming a target quadrilateral boundary are obtained. A first trapezoidal boundary is obtained according to a predetermined image boundary and a first coordinate component of each of the four target coordinates. At least one edge of the target quadrilateral boundary is extended until intersecting with at least one of two reference line segments to obtain a second trapezoidal boundary. Bases of the first trapezoidal boundary are perpendicular to bases of the second trapezoidal boundary. First direction scaling processing is performed according to the first trapezoidal boundary, and second direction scaling processing is performed according to the second trapezoidal boundary, to scale an original image into a target image block aligned with the target quadrilateral boundary in an output image. The projection device projects the output image to display a rectangular projection image. | 05-05-2022 |