| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 353037000 | Reflector between lamp and screen | 44 |
| 20080204666 | IMAGE PROJECTION AND CAPTURE SYSTEMS - An image projection system is provided that includes a projector configured to generate a visible projected image, a screen having an interior surface enclosing a three-dimensional space, and a reflector configured to receive the visible projected image from the projector and to reflect the visible image on the interior surface of the screen, the reflector having an aspherical reflective surface that adapts the visible image from the projector for display on the interior surface of the screen, ideally without distortion and without using software warping, to provide complete coverage of the interior surface of the screen. | 08-28-2008 |
| 20080297731 | APPARENT SPECKLE REDUCTION APPARATUS AND METHOD FOR MEMS LASER PROJECTION SYSTEM - A laser projection system is disclosed having reduced apparent speckle. The system includes a laser emitting a first beam on an optical element. The optical element emits a second beam incident on a scanner that scans the beam onto a projection screen. The optical element may be an exit pupil expander, delay plate, or have a locally electrically modulated index of refraction. In other embodiments, the laser has a tunable wavelength distribution that is changed for each frame displayed by the projection system to reduce apparent speckle. In still other embodiments, the angular content of a beam incident on a scanner is modulated to produce a time varying speckle pattern. | 12-04-2008 |
| 20080316434 | Multi-Resolution Digital Table Display System - A multi-resolution digital table display system is provided for integrally displaying an image picture with more than one resolution. The multi-resolution digital table display system includes a table, a peripheral projection device, a foveal projection device, and an image module. For saving space and avoiding affection of user's hand, the peripheral projection device and the foveal projection device required for projecting images are disposed under the table. The image module provides a peripheral image with a first resolution to the peripheral projection device for projecting the same to a projection screen, and provides a foveal image with a second resolution to the foveal projection device for projecting the same to the projecting screen, such that an image picture can be integrally displayed on the projecting screen. | 12-25-2008 |
| 20090033878 | System configurations and methods for controlling image projection apparatuses and mirror device - A projection apparatus comprises a light source for emitting an incident light and a deflectable element for reflecting the incident light. The projection apparatus further includes an electric circuit for applying a voltage to deflect the element and to turn off the voltage used during a period when the light source is turned off. | 02-05-2009 |
| 20090147222 | Angle Diversity Antispeckling in Spot Displays - Improvement of speckling noise is discussed in which a central light beam received at a double-sided mirror is divided into a plurality of sub-beams. An intensity of these sub-beams decays from a second sub-beam to a last sub-beam of the plurality. Each sub-beam is also separated at the double-sided mirror by at least a first length, such as the coherence length or intrinsic divergence, and reflected toward a display screen. The configuration of the double-sided mirror focuses the sub-beams to converge with a first sub-beam on the display screen at different angles. The decreasing intensity and different angles of impact with the screen decreases the spatial coherence of the display light. The angle diversity and combination of multiple sub-beams having different intensities offers a non-time-averaging means to decrease speckle noise without downgrading the beam quality or display resolution. | 06-11-2009 |
| 20090180081 | PROJECTOR - A projector includes a first light source section a second light source section, a light combining section adapted to combine the first light beam and the second light beam, an adjustment device adapted to adjust a light path of the first light beam and a light path of the second light beam, respectively, in two steps, an homogenizing optical system adapted to equalize the first light beam and the second light beam processed by the light combining section, a light modulation section adapted to modulate the light beam from the homogenizing optical system in accordance with image information, and a projection optical system adapted to project an image beam processed by the light modulation section. | 07-16-2009 |
| 20090219491 | Method of combining multiple Gaussian beams for efficient uniform illumination of one-dimensional light modulators - An illumination system for transforming at least one laser light beam having a non-uniform distribution in a first axis and a second axis to a beam having a substantially uniform distribution in the first axis while preserving the non-uniform distribution in the second axis. The transformed beam may be imaged as a line image onto a one-dimensional light modulation device. The illumination system may comprise a light tunnel having two sides that interact with the at least one laser light beam in the first axis and two sides that do not interact with the light in the second axis. | 09-03-2009 |
| 20090237618 | ILLUMINATION APPARATUS, PROJECTOR, AND ILLUMINATION METHOD - An illumination apparatus includes: a first light source section; a plurality of second light source sections; and an optical axis conversion element which allows a light incident from the first light source section to emit in such a way that an exiting optical axis of the light approximately coincides with an illumination optical axis, and allows lights incident from the plurality of second light source sections to emit in such a way that exiting optical axes of the lights become approximately parallel to the illumination optical axis in positions close to the illumination optical axis. | 09-24-2009 |
| 20090262309 | PROJECTION TYPE VIDEO DISPLAY APPARATUS - A projection type video display apparatus has a lighting system, which comprises a multiplicity of light sources ( | 10-22-2009 |
| 20090268168 | PROJECTOR - A projector comprising a first light source, a second light source, a light combining element, a diffuser and an actuator is provided. The first light source provides a first light beam with high coherence. The second light source provides a second light beam with high coherence. The light combining element comprises a first surface, wherein the first and second light beams enter the light combining element, and are combined into a mixed light beam therein. The diffuser is disposed on the first surface of the light combining element, wherein the first and second light beams enter the diffuser. The actuator is connected to the light combining element, wherein the actuator actuates the light combining element to vary locations where the first and second light beams enter the diffuser. | 10-29-2009 |
| 20090303446 | LIGHT COMBINING METHOD, ILLUMINATION DEVICE, AND PROJECTION DISPLAY DEVICE - A first light source arrangement pattern is defined by: defining segments opposing to each other and arranged at end positions out of three segments in a first unit and three segments in a second unit, as light source arrangement positions; and defining one of three segments in a third unit, at the same position as the segment defined as the light source arrangement position in the first unit, as a light source arrangement position. A second light source pattern is defined by defining segments out of the segments in the first unit, the second unit, and the third unit, at end positions opposite to the segments defined as the light source arrangement positions in the first light source arrangement pattern, as light source arrangement positions. The first light source arrangement pattern and the second light source arrangement pattern are alternately arranged in the vertical direction. | 12-10-2009 |
| 20090323029 | MULTI-DIRECTIONAL IMAGE DISPLAYING DEVICE - Methods, devices, and systems are provided for displaying an image using a multi-directional image displaying device in a compact, configurable device having an expansive viewing angle. An image projector projects an image having a plurality of image pixels. A distribution object is aligned with the image projector. The distribution object is utilized to redirect the image pixels projected by the image projector onto one or more display surfaces. As such, in one embodiment, a wide view display of the first image that expands at least the width of a user field of view results from the spreading of the image pixels. A compact housing unit provides support for the image projector and the distribution object. In one embodiment, the multi-directional image displaying device can be adjusted to change the wide view display of the image. | 12-31-2009 |
| 20100045939 | LIGHT INTEGRATION APPARATUS FOR USE IN A PROJECTION DEVICE - A light integration aparatus for use in a projection device is provided. The light integration apparatus comprises the first integration rod and the second integration rod symmetrically disposed with respect to a symmetric axis. The light emerging ends of the first integration rod and the second integration rod are both disposed towards the symmetric axis. Thus, the light is adapted to be guided through the first integration rod and the second integration rod, and emerge from the light emerging ends to travel parallel to the symmetric axis. | 02-25-2010 |
| 20100053564 | ILLUMINATOR AND PROJECTOR - An illuminator includes: a first light source and a second light source that are disposed substantially symmetrically with respect to an illumination optical axis, wherein each of the first and second light sources includes an arc tube, a first reflector disposed to surround part of the entire space around the optical axis of the arc tube, the first reflector reflecting the light emitted from the arc tube toward an object to be illuminated, and a second reflector disposed on the opposite side of the optical axis of the arc tube to the first reflector, the second reflector reflecting the light emitted from the arc tube toward the first reflector. | 03-04-2010 |
| 20100103380 | CRITICAL ABBE ILLUMINATION CONFIGURATION - The present invention relates to an optical projection illumination module that projects highly uniform radiative energy (e.g., visible light, ultraviolet radiation, infrared radiation, etc.) onto a target area. More particularly, the illumination module comprises a radiative energy source (e.g., a LED) configured to provide divergent radiative energy (e.g., a non-uniform illumination) directly to a reflective tunnel (e.g., a total internal reflection tunnel), separated from the radiative energy source by a small gap and optically in contact (e.g., physically coupled) to a front optical element (e.g., collimator lens). The reflective tunnel mixes the divergent radiative energy, and outputs a substantially uniform radiative energy to a front optical element. One or more downstream optical elements image the output of the reflective tunnel directly to the target area (i.e., the object imaged on to the target area is located on an image plane embedded between the reflective tunnel and the front optical element). | 04-29-2010 |
| 20100110390 | HIGH INTENSITY IMAGE PROJECTOR USING SECTIONAL MIRROR - Image projectors with increased light intensity and methods for providing brighter images are provided. Image projectors, described herein, can provide the brightness while still providing any or all of compactness, low power consumption, and long lifetime. To increase brightness, sectional mirrors are used to respectively compress the light from two light sources into a single pupil (e.g. an aperture) of an imaging device. The compression can be accomplished by regions (e.g. sections) of the mirror having different angles with respect to the pupil. Relatively little light may be lost in the compression since minima for a light intensity pattern from a light source may occur between the regions that reflect the light. | 05-06-2010 |
| 20100195059 | LIGHT SOURCE DEVICE AND PROJECTION DISPLAY DEVICE USING THE SAME - First and second lamps | 08-05-2010 |
| 20100208213 | ENTIRE-VISUAL-FIELD PROJECTION DEVICE, AND ENTIRE-VISUAL-FIELD IMAGE SYSTEM - An entire-visual-field projection device which projects image information relating to an entire-visual-field image onto a spherical screen to provide the entire-visual-field image to a viewer positioned inside the screen. The projection device is provided with the spherical screen, a pair of projectors which project the entire-visual-field image onto the screen and are arranged opposite each other with the center of the screen therebetween, and a double-convex mirror for projection which reflects luminous fluxes from the projectors toward the screen and is disposed in the vicinity of the center of the screen. A projection luminous flux from one of the projectors is emitted to one of the convex surfaces of the mirror, and that from the other projector to the other convex surface of the mirror. | 08-19-2010 |
| 20100277698 | DIGITAL PROJECTOR USING ARRAYED LIGHT SOURCES - A beam alignment chamber extending in a length direction comprising a base having a front edge, and two side edges, first and second opposed side walls connected to the base, and extending along the length of the base, a front wall located at the front edge of the base having an output opening. The beam alignment chamber further comprises a plurality of arrays of light sources disposed to direct light beams through the first or second side walls, and a plurality of reflectors mounted on the base, each having independent yaw and pitch adjustments, each reflector being paired with a corresponding array of light sources, the base-mounted reflectors being disposed to direct the light beams along the length of the beam alignment chamber through the output opening forming an aligned two-dimensional array of parallel light beams. | 11-04-2010 |
| 20100277699 | BEAM ALIGNMENT CHAMBER PROVIDING DIVERGENCE CORRECTION - A beam alignment chamber comprising: a base, first and second side walls connected to the base, and a front wall located at the front edge of the base having an output opening. The beam alignment chamber further including a plurality of light sources disposed to direct light beams through the first or second side walls, a plurality of reflectors mounted on the base, each having independent yaw and pitch adjustments, each being disposed to direct the light beams from a corresponding light sources along the length of the beam alignment chamber through the output opening forming an aligned array of parallel light beams, and one or more optical elements positioned in the optical path of the aligned array of light beams disposed to correct the beam divergence with respect to at least one axis. | 11-04-2010 |
| 20100277700 | IMAGE DISPLAY APPARATUS - Provided is an image display apparatus, including: a light modulation element; an illumination optical system which includes at least one light source unit including a plurality of light emitting units two-dimensionally arranged and illuminates the light modulation element; and a projection optical system for enlarging and projecting an image of the light modulation element onto a projection surface, in which: an image of the plurality of light emitting units is imaged at a position corresponding to a stop of the projection optical system; the stop has an aperture shape of rotational asymmetry or of two-fold symmetry; and the plurality of light emitting units have illuminance intensities each independently controlled. | 11-04-2010 |
| 20100290010 | PROJECTION APPARATUS AND TRANSPARENT SCREEN FOR IT - There is provided a projection apparatus using an oblique projection optical system, which generates little reflection loss by providing a linear Fresnel lens at an incident surface in the case where the apparatus is used as a linear system, wherein said linear Fresnel lens makes total reflection of image light, and is capable of obtaining total surface property with good brightness in a region with small incident angle onto a screen, by using a total reflection Fresnel lens and a refraction Fresnel lens in combination. In addition, total surface property with further good brightness can be obtained by using a plurality of projection image display apparatuses in the same projection apparatus. | 11-18-2010 |
| 20100302514 | BEAM ALIGNMENT SYSTEM USING ARRAYED LIGHT SOURCES - A beam alignment system for generating an aligned two-dimensional array of parallel light beams, comprising a beam alignment chamber including a base extending in a length direction and a plurality of reflectors mounted on the base, each having independent yaw and pitch adjustments. The beam alignment system further includes a plurality of arrays of light sources, each generating an array of light beams and being paired with a corresponding reflector, the reflectors being disposed to direct the light beams along the length of the beam alignment chamber forming an aligned two-dimensional array of parallel light beams. | 12-02-2010 |
| 20100309440 | MULTIPLE-LIGHTS-COMBINING ILLUMINATION DEVICE AND PROJECTION-TYPE DISPLAY APPARATUS USING THE SAME - A multiple-lights-combining illumination device includes multiple light sources, multiple sub-rod integrators that respectively guide light from the multiple light sources, and a main rod integrator that guides light from the multiple sub-rod integrators. Each of the sub-rod integrators has reflection surfaces that are parallel to each other in a longitudinal direction, and has an entrance surface and an exit surface that are parallel or perpendicular to each other at ends thereof, the main rod integrator has reflection surfaces that are parallel to each other in a longitudinal direction, and has an entrance surface and an exit surface that are perpendicular to the reflection surfaces at ends thereof, and each reference optical axis that passes through an optical centroid portion of a light-emitting part of the light sources along a light emission direction is arranged so as to pass through substantially a center of the entrance surface of the respective sub-rod integrator. It is possible to use efficiently light while obtaining high intensity by combining light from multiple light sources, and furthermore possible to obtain a small and inexpensive device. | 12-09-2010 |
| 20110001936 | OPTICAL SYSTEM - An optical system is provided. The optical system includes a luminous system which comprises a plurality of light source devices and an image unit; and a projection system which receives light having an image through the luminous system, and enlarges and projects the light, wherein the plurality of light source devices comprise a reflection member which reflects light beam emitted from the light source devices, and are disposed so that the light beam emitted from the light source devices is reflected by the reflection member one time and enters to the image unit. | 01-06-2011 |
| 20110043766 | INFORMATION PROCESSOR WITH PROJECTOR - There is disclosed an information processor including a housing, a projector attached to the housing, and a screen attached to the housing, wherein the projector projects light onto the screen. | 02-24-2011 |
| 20110043767 | ILLUMINATION OPTICAL SYSTEM AND PROJECTION DISPLAY APPARATUS - An illumination optical system and a projection display apparatus include a beam combining portion and a condensing lens condensing a beam from the beam combining portion. The beam combining portion combines beams from first and second lamp units each including a lamp and a concave mirror, the lamp having a cathode and an anode arranged along an optical axis of the concave mirror. The beam combining portion includes a first reflective section disposed on an optical axis of the first lamp unit and off the optical axis of the second lamp unit and a second reflective section disposed off the optical axis of the first lamp unit. The first and second reflective sections reflect a beam that is emitted from the second lamp unit and that is off an optical axis thereof to combine the beams from the first and second lamp units. | 02-24-2011 |
| 20110122373 | LIGHT EMITTING APPARATUS AND PROJECTOR - A light emitting apparatus includes: a light emitting device, the light emitting device emitting first and second emitted light; a first optical element; and a second optical element, wherein the first optical element includes a first lens surface on which the first emitted light is incident, a first reflection surface that reflects the light having passed through the first lens surface, and a second lens surface that refracts the light reflected off the first reflection surface, the second optical element includes a third lens surface on which the second emitted light is incident, a second reflection surface that reflects the light having passed through the third lens surface, and a fourth lens surface that refracts the light reflected off the second reflection surface, and the light having exited through the second lens surface and the light having exited through the fourth lens surface travel in the same direction. | 05-26-2011 |
| 20110205499 | PROJECTING OPTICAL UNIT AND PROJECTING TYPE IMAGE DISPLAY APPARATUS THEREWITH - A projection image display device is disclosed in which a trapezoidal distortion and/or aberration are restrained when an image is enlarged and projected obliquely onto a screen. An image generator is connected to an optical system base in such a manner that at least an inclination thereof (on an axis parallel to X axis) with respect to a vertical line and a distance thereof in forward and backward direction (Z axis direction) can be adjusted by an adjusting mechanism. Further, a projecting lens | 08-25-2011 |
| 20120081675 | MASS MEDIA VIDEO PLAYER - The present invention provides a mass media video player which comprises an edge blending apparatus for video signals, plurality of projectors, a plurality of reflector assemblies and a screen. By making use of the optical projection effect, the images projected from the plural projectors are reflected by plural reflector assemblies so as to maximize the size of the image area on screen, and at the same time makes the distance between the screen and the projector as short as possible. | 04-05-2012 |
| 20120113397 | Scanning Optical System and Projector Provided with the Same - Provided is a scanning optical system having reduced dimensions. The scanning optical system ( | 05-10-2012 |
| 20120236264 | LIGHT SOURCE DEVICE AND PROJECTOR - A light source device includes plural solid-state light sources, plural collimator lenses, a collection system, and a fluorescent layer that generates fluorescence from at least a part of the lights from the collection system, wherein at least one anamorphic surface is provided in an optical path from the plural collimator lenses to the fluorescent layer. The plural solid-state light sources are located in positions different from focal positions of the plural collimator lenses in an optical axis direction. | 09-20-2012 |
| 20120281187 | HIGH INTENSITY IMAGE PROJECTOR USING SECTIONAL MIRROR - Image projectors with increased light intensity and methods for providing brighter images are provided. Image projectors, described herein, can provide the brightness while still providing any or all of compactness, low power consumption, and long lifetime. To increase brightness, sectional mirrors are used to respectively compress the light from two light sources into a single pupil (e.g. an aperture) of an imaging device. The compression can be accomplished by regions (e.g. sections) of the mirror having different angles with respect to the pupil. Relatively little light may be lost in the compression since minima for a light intensity pattern from a light source may occur between the regions that reflect the light. | 11-08-2012 |
| 20120327376 | IMAGE PROJECTION USING CURVED REFLECTIVE SURFACES - A system for projecting images has an illumination system for providing light, a spatial light modulator including an array of individually addressable pixel modulator elements with curved reflective surfaces, and projection optics for projecting the modulated light to form the image, wherein no focal planes of the projection optics are aligned to the reflective surfaces of the pixels. | 12-27-2012 |
| 20130070209 | METHOD AND SYSTEM FOR DYNAMIC FEED-FORWARD POWER CONTROL IN A PROJECTOR SYSTEM - A projection system for projecting an output image. The projection system comprises a plurality of laser diodes, each laser diode operable to generate a light beam having a selected intensity in response to a control voltage and a control current and combiner optics for combining light beams received from the plurality of laser diodes to generate an output light beam. A MEMS mirror module receives the output light beam from the combiner optics and generates a scanning light beam that forms the output image on a projection surface. A controller adjusts the control voltage associated with each of the plurality of laser diodes for a first line of pixel data in response to a determination of a level of contrast associated with the first line of pixel data. | 03-21-2013 |
| 20130176542 | METHOD AND DEVICE FOR PROJECTING AN IMAGE - According to the present invention there is provided a method for projecting an image on to a display surface, comprising the steps of, providing two or more projection systems; arranging the two or more projection systems such that they each project an image on a display surface; off-setting an oscillating reflective surface within at least one of the two or more projection systems such that the image projected by each of the two or more projection systems are in co-operation on the display surface. | 07-11-2013 |
| 20130250249 | PROJECTOR AND LIGHT INTEGRATION ROD THEREOF - A projector includes a light source, a light integration rod, a light valve, and a projection lens. The light source provides an illumination beam. The light integration rod has a light incidence end and a light emission end opposite to each other. Through the light incidence and emission ends, the illumination beam is emitted into and out from the light integration rod, respectively. Each of the light incidence end and the emission end is in a rectangular shape. The light incidence end has a first long edge and a first short edge. The light emission end has a second long edge paralleling to the first short edge and a second short edge paralleling to the first long edge. The light valve converts the illumination beam into an image beam. The projection lens is disposed on a transmission path of the image beam. A light integration rod is also provided. | 09-26-2013 |
| 20130278904 | DUAL PROJECTOR CROSS-MIRROR ACTUATOR MECHANISM - A mirror actuator system is provided for aligning images projected onto a curved screen by dual projectors. According to a preferred embodiment, a unique screw mechanism is provided for selectively slightly warping the mirror. The screw mechanism includes a load spreader in contact with the mirror, having a groove for receiving an screw actuator for applying positive or negative pressure to the load spreader and thereby to a local area (i.e. zone) of the mirror. The actuator system of the present invention provides low cost static pressure adjustment to the mirror for maintaining the focus quality while locally modifying the geometric ‘aim’ of the mirror. The groove in the load spreader provides tolerance to prevent thermal coefficient of expansion (TCE) distortion. | 10-24-2013 |
| 20130308104 | LIGHT SOURCE APPARATUS AND IMAGE PROJECTION APPARATUS - A light source apparatus includes a first reflector having a first reflection face; a second reflector having a second reflection face, the first reflection face of the first reflector and the second reflection face of the second reflector disposed opposite each other; and a plurality of light sources being disposed around a periphery of the second reflector. Light beams emitted from the plurality of light sources reflect on the first reflector and then reflect on the second reflector. | 11-21-2013 |
| 20140049755 | ILLUMINATION LIGHT GENERATION APPARATUS - An illumination light generation apparatus includes a light source unit and an emission unit. The light source unit includes first and second light source groups that radiate a plurality of light beams, respectively. The first and second light source groups face each other. The emission unit emits a composite light beam in a predetermined direction and includes a first reflection part that reflects the plurality of light beams radiated from the first light source group, and an emission part that reflects the plurality of light beams reflected from the first reflection part and the plurality of light beams radiated from the second light source group. The emission part generates the composite light beam by reflecting the plurality of light beams radiated from the first light source group and the plurality of light beams radiated from the second light source group in the predetermined direction. | 02-20-2014 |
| 20140098350 | OPTICAL DEVICE - According to the present invention, there is provided an optical device comprising, a plurality of light sources each operable to provide a light beam; at least one beam combiner which is operable to combine the light beams from the plurality of light sources, to provide a combined light beam; a beam splitter, which is arranged to receive the combined light beam and to split the combined light beam into a primary light beam and a secondary light beam, wherein one or more characteristics of the secondary light beam are indicative of one or more characteristics of the primary light beam, wherein the beam splitter comprises a first surface through which the primary light beam is emitted from the beam splitter and a second surface through which the secondary light beam is emitted from the beam splitter; a mirror component which comprises a mirror, wherein the mirror component is arranged such that the mirror can reflect the primary light beam which is emitted through the first surface of the beam splitter and wherein the mirror can oscillate about at least one oscillation axis to scan the primary light beam; wherein the optical device further comprises a photodiode which is configured to receive the secondary light beam and to detect one or more characteristics of the secondary light beam, wherein the photodiode is configured to be offset from being parallel to at least one of the first surface or second surface of the a beam splitter, to reduce the amount of parasitic light which is directed to the mirror. There is further provided a corresponding method of projecting an image. | 04-10-2014 |
| 20140125957 | LIGHT FIELD DISPLAY APPARATUS AND METHOD - A light field display apparatus includes a plurality of projectors to emit rays, and a screen to display the rays emitted by the plurality of projectors. Positions of the plurality of projectors may be controlled so that intervals or angles between the rays displayed on the screen are substantially the same. | 05-08-2014 |
| 20150049310 | PROJECTOR AND DISPLAY SYSTEM COMPRISING SAME - The invention pertains to a projector comprising an optical engine, a projection lens, a means for light deviation, and an afocal lens system, wherein the projector has a total throw ratio between 0.7 and 0.8. Such a projector can be used to build a very compact and cost-effective back-projection system. The invention also pertains to a projection assembly comprising such a projector, followed by a means for light gradation and a front-surface mirror. The invention also pertains to a display system comprising at least one such projection and a display screen. | 02-19-2015 |
| 20160156886 | A METHOD FOR REDUCING SPECKLE EFFECT | 06-02-2016 |
