Class / Patent application number | Description | Number of patent applications / Date published |
353099000 | Plural | 80 |
20080204673 | PROJECTION TYPE DISPLAY APPARATUS - In a projection type display apparatus for enabling to display an image, by projecting an image on an image display element(s), enlargedly, upon a nearly horizontal surface, such as, a table, a reflection mirror for reflecting a light from a light source is so disposed that an optical axis of the light source is nearly perpendicular to an optical axis of a lens group having a plural number of lens elements, which are disposed symmetric with respect to the optical axis. | 08-28-2008 |
20080212040 | Holographic MEMS operated optical projectors - A method forms an image with a reconfigurable array of mirrors. The method includes configuring the array by translating some of the mirrors such that distances of the mirrors of the array from a reference plane have a non-uniform spatial distribution. The method includes illuminating the configured array with a coherent light beam such that part of the light beam is reflected off the array and is projected on a planar viewing screen. | 09-04-2008 |
20080252863 | Projection display apparatus - An illuminating optical system propagates a coherent light flux from at least one light source into a predetermined optical path to guide the light flux to a screen. A light bulb forms an image to be displayed on the screen on an illumination area illuminated with the light flux that is guided by the illuminating optical system. A projecting optical unit projects the image that is formed on the illumination area onto the screen in a magnifying manner. The illuminating optical system includes a diffusing unit that diffuses the light flux from the light source near a focusing position of the illuminating optical system. | 10-16-2008 |
20080284988 | Image projecting apparatus and image projecting method for use in the same - Disclosed herein is an image projecting apparatus, including: a one-dimension type light modulating device for modulating a light in accordance with image information; a projection optical system; and a light deflecting device for deflecting an image light in a direction approximately perpendicular to an extension direction of a one-dimensional image light emitted from the one-dimensional light modulating device; wherein the light deflecting device is composed of a first light deflecting device arranged between the projection optical system and the one-dimension type light modulating device, and a second light deflecting device arranged on an emission side of the projection optical system; the second light deflecting device is detachably mounted. | 11-20-2008 |
20080309890 | PROJECTION APPARATUS AND LIGHT INTEGRATION ROD THEREOF - A light integration rod having a light input end and a light output end opposite to each other is provided. The light integration rod includes a first reflective plate, a second reflective plate, a third reflective plate and a fourth reflective plate. The second reflective plate is opposite to the first reflective plate. The third reflective plate and the fourth reflective plate connect the first reflective plate and the second reflective plate, and are disposed opposite to each other. A long side of the first reflective plate is not equal to a long side of the second reflective plate. A short side at the light output end of at least one of the first reflective plate and the second reflective plate is separate from a short side of the third reflective plate and a short side of the fourth reflective plate at the light output end. | 12-18-2008 |
20090009731 | OPTICAL BEAM SCANNING DEVICE, IMAGE FORMING APPARATUS - To provide a technique that can contribute to improvement of an optical characteristic of an optical beam scanning device while realizing an increase in scanning speed of a light beam. | 01-08-2009 |
20090009732 | Projection display system using laser light source - The present invention provides a projection apparatus that includes a mirror element and a drive circuit for driving a laser light source for projecting an illumination light. The projection apparatus further includes mirror device for modulating the illumination light and a projection lens for projecting the modulated light from the mirror element. The mirror device is disposed on a device substrate and packaged in a package substrate made of a transparent silicon material with a metallic thermal transfer path connected to the device substrate and a cover glass covering the package substrate. The distance between the mirror and the bottom surface of the cover glass is larger than the focal length of the projection lens. | 01-08-2009 |
20090015801 | PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION APPARATUS, AND IMAGE PROJECTION APPARATUS - A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected. | 01-15-2009 |
20090021703 | PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION APPARATUS, AND IMAGE PROJECTION APPARATUS - A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected. | 01-22-2009 |
20090033887 | PROJECTION OPTICAL SYSTEM - A projection optical system includes a digital micro-mirror device and a light blocker disposed along the light path of the digital micro-mirror device. The digital micro-mirror device includes a base having a plurality of outer pads, a micro-mirror array disposed on the base, and a plurality of bonding wires. The bonding wires are electrically connecting the outer pads with the corresponding micro-mirror array. The light blocker is configured for blocking the light incident to the bonding wires and the light reflected by the bonding wires. | 02-05-2009 |
20090066920 | PROJECTION TYPE IMAGE DISPLAY DEVICE - A projection type image display device includes a reflector | 03-12-2009 |
20090103058 | Peripheral projection display system - A peripheral projection, display screen system including (a) a display screen having a rear side and a diagonal dimension, (b) an image-projection source coupled to a peripheral of the system and disposed at a defined, image-projection system depth rearwardly of the screen's rear side, (c) an optical path structure operatively interposed and optically coupling the source and the rear side of the screen, coupling the image from the source to the screen's rear side, and within the mentioned, defined image-projection system depth, a displayable image projected by the source, and (d) system geometry structure organizing the screen, the source, and the optical path structure, whereby the depth ratio of the diagonal dimension of the screen to the image-projection depth is equal to or more than 10:1. | 04-23-2009 |
20090122279 | PROJECTOR - A projector includes a screen; a reflection unit having at least one curved surface mirror disposed on the projection side of the screen; a bending mirror disposed before the reflection unit on the optical path and disposed on either the non-projection side of the screen or on an extension plane of the screen; a refraction unit disposed before the reflection unit on the optical path and having at least a part disposed on either the non-projection side of the screen or on the extension plane of the screen; and an image forming unit disposed before the refraction unit on the optical path and disposed on the non-projection side of the screen. | 05-14-2009 |
20090153808 | Free-form condenser optic - A condenser for directing light from a UHP arc lamp or other generally cylindrical source onto a target such as a microdisplay in line with a front end of the lamp comprises a primary mirror to direct light from the source towards the back end of the condenser, and a secondary mirror at the back end of the condenser to direct the light from the primary mirror onto the target. | 06-18-2009 |
20090153809 | PROJECTION OPTICAL SYSTEM AND PROJECTION DISPLAY DEVICE - A projection optical system includes a first refracting optical system having a plurality of lenses, a first reflecting optical system, and a second reflecting optical system. The first reflecting optical system is disposed on a side of a projection port with respect to an optical axis of the first refracting optical system, and has a positive optical power to reflect light incident through the first refracting optical system in a direction opposite to the side of the projection port. The second reflecting optical system is operable to reflect the light reflected on the first reflecting optical system toward the projection port. | 06-18-2009 |
20090161080 | Displaying Method of Digital Light Processing (DLP) Projector and DLP Projector using the same - A displaying method of a digital light processing (DLP) projector includes the steps of: providing a light modulation device including a driver printed circuit board and a digital micromirror device (DMD), wherein the DMD includes a plurality of micromirrors each having a first stable state and a second stable state, and a predetermined light incident direction, the DMD is installed on the driver printed circuit board; providing an illumination light beam being incident on the DMD along an operating direction different from the predetermined light incident direction, modulating the illumination light beam to an imaging light beam by the DMD and directing the imaging light beam to a projection lens for projecting an image. A DLP projector made thereby has a relatively lower manufacturing cost. | 06-25-2009 |
20090168030 | DISPLAY AND DESIGN METHOD THEREOF - A display is provided including a light source, a light valve, a projection lens, a first planer reflector, a second planer reflector, a curved reflector and a projection plane. The light source is capable of emitting a light beam. The light valve is disposed on a light path of the light beam to transform the light beam into an image light beam. The projection lens is disposed on a light path of the image light beam. The first planer reflector reflects the image light beam from the projection lens. The second planer reflector reflects the image light beam from the first planer reflector. The curved reflector reflects the image light beam from the second planer reflector. The image light beam from the curved reflector is projected on the projection plane to form a projection image. | 07-02-2009 |
20090168031 | OBLIQUE PROJECTION OPTICAL SYSTEM - An oblique projection optical system enlarges an image formed on a display device surface, and obliquely projects the enlarged image on a screen surface. The oblique projection optical system has, in the order from a reduction side: a refraction optical portion having a positive optical power, a concave reflection surface having a positive optical power, and a convex reflection surface having a negative optical power. The refraction optical portion includes a rotationally symmetric coaxial refraction group. An intermediate image of the image formed on the display device surface is formed between the refraction optical portion and the concave reflection surface. An aperture stop image is formed between the concave reflection surface and the convex reflection surface. The concave reflection surface and the convex reflection surface fulfill prescribed conditional formulae. | 07-02-2009 |
20090231555 | PROJECTOR - In a projection optical system comprising: two lens groups, and a curved plane mirror, wherein the projection optical system including two story structure, and having bend means for bending at least two times the light incident from an electro-optic modulator. | 09-17-2009 |
20090244499 | System and Method for a Projection Display System Using an Optical Lightguide - A system and method for using an optical lightguide in a projection display system. A plurality of light sources provides a plurality of colored light to a lightguide. The lightguide may include alternating layers of a relatively high refractive index material and a relatively low refractive index material. In an embodiment, the layers of the lightguide are tapered. In another embodiment, the lightguide includes a light pipe having a lenticular array on the entrance face of the light pipe. Optionally, the light pipe may be tapered. The lightguide provides a line of light to a scanning element, which in turn redirects the light to a spatial light modulator. | 10-01-2009 |
20100026971 | PROJECTION-TYPE IMAGE DISPLAY APPARATUS - A projection-type image display apparatus includes a first reflecting optical element and a second reflecting optical element that are retained on a base. A base-side first positioning unit and a base-side second positioning unit are formed integrally with the base. The base-side first positioning unit abuts against the first reflecting optical element to define a position of the first reflecting optical element. The base-side second positioning unit abuts against the second reflecting optical element to define a position of the second reflecting optical element. | 02-04-2010 |
20100060867 | PSEUDO LIGHT PIPE FOR COUPLING OF LIGHT FOR DUAL PARABOLOID REFLECTOR (DPR) SYSTEM - A pseudo light pipe comprises an input end, an output end and a light transmission medium. The input end collects rays of light from a light source. The output end outputs and collimates the rays of the light collected at the input end. The output end has a convex curvature. The light transmission medium interconnects the input and output end, and transmits the rays of the light from the input end to the output end. The convex curvature of the output end is selected to output parallel rays of light. A projection system incorporating the pseudo light pipe and a dual paraboloid reflector (DPR) system. | 03-11-2010 |
20100066985 | REFLECTING MIRROR, LAMP UNIT, AND PROJECTION TYPE IMAGE DISPLAY DEVICE - The present invention provides for example a reflecting mirror that has a reflecting surface that is capable or preventing the rise of the temperature of the electrodes due the reflection light. The reflecting surface that reflects towards the electrodes the light rays emitted by the lamp has been corrected such that within an area surrounded by line segments connecting points P | 03-18-2010 |
20100091254 | Flat-Panel Optical Projection Apparatus with Reduced Distortion - A light guide of the tapered-waveguide type includes an input slab ( | 04-15-2010 |
20100097583 | Light Source Unit and Projection Type Image Display Apparatus Having the Same - First and second reflectors are provided. The first reflector has a function of reflecting a light ray emitted from a light source and directing it toward an image display element and the second reflector has a function of changing the direction of a light ray so as to be reflected by the first reflector which light ray is emitted from the light source and not reflected by the first reflector. An outer periphery shape of the second reflector is changed correspondingly to an effective area of a first array lens | 04-22-2010 |
20100103389 | Multi-MEMS Single Package MEMS Device - A system and method for packaging multiple MEMS devices is disclosed. A preferred embodiment comprises two or more MEMS devices, such as DMD devices, packaged together into a single package. The MEMS devices can be either on a single substrate or else on multiple substrates, and may be aligned together or not aligned together depending upon the desired orientation of the MEMS devices. | 04-29-2010 |
20100123881 | Lighting Device and Projector - A lighting device includes: a light source which emits light around a light source axis; a reflector which has a plurality of reflection surfaces for reflecting light emitted from the light source; a plurality of converging units each of which is provided for the corresponding reflection surface of the plural reflection surfaces to receive light released from the corresponding reflection surface; and a stacking system which stacks light having passed the plural converging units on a light receiving area wherein each of the plural reflection surfaces is formed by a part of a spheroid having focuses at the position of the corresponding converging unit and the position of the light source, and each focal distance of the plural converging units becomes longer as the distance between the position of the converging unit and the light source axis increases. | 05-20-2010 |
20100134767 | LIGHT EMITTING DEVICE FOR PORTABLE COMMUNICATION DEVICE HAVING DIGITAL LIGHT PROCESSING PROJECTOR AND LIQUID CRYSTAL DISPLAY - Provided is a light emitting device of an electronic device, provided with a DLP (Digital Light Processing) projector and a display unit, which is configured in such a manner that the light generated by the operation of the DLP projector can be re-used as a backlight light of the display unit. The disclosed light emitting device includes a first mirror for projecting a light of the DLP projector on a flat area provided ahead of the first mirror in an intermediate operation state of the first mirror; a light concentration mirror for converging the light projected on the flat area, the light concentration mirror being provided at a position adjacent to the flat area; and an optical fiber for transferring the light converged by the light concentration mirror to the display unit and enabling re-use of the transferred light as a light for a backlight of the display unit. | 06-03-2010 |
20100141908 | PROJECTING DEVICE - A rear-projection type projecting device enlarging and projecting an image displayed by a display device onto a screen, including a projecting optical system including a first optical system having a positive power and a second optical system having a reflection surface with a positive power, and a plane mirror attached to the projecting device to form a substantially right angle with respect to the screen and to reflect light emerging from the projecting optical system to the screen, wherein an effective reflection area of the reflection surface with the positive power is located at a position farther from an optical axis of the first optical system when viewed from the plane mirror. | 06-10-2010 |
20100149497 | Projection apparatus having improved projection properties, and method and procedure, respectively, for projecting an image - In a method for projecting an image onto a projection area ( | 06-17-2010 |
20100149498 | Image display apparatus - An image display apparatus includes a screen, a reflection mirror, an adaptive optics, and a projection unit. The reflection mirror has a reflective surface facing a light incident surface of the screen, and is separated from the light incident surface by a space. The boundary of the space is defined by the edges of the reflective surface and the light incident surface. The adaptive optics is disposed on the boundary of the space. The projection unit is disposed outside the space. The adaptive optics has a light exit side facing the reflective surface of the reflection mirror, and a light incident side facing the projection unit. A projecting light is generated from the projection unit, passes through the adaptive optics for adjusting the image size formed by the projecting light, and then is projected to the reflective surface of the reflection mirror for being reflected to the light incident surface. | 06-17-2010 |
20100177287 | ILLUMINATION APPARATUS AND PROJECTOR HAVING THE SAME - An illumination apparatus includes: first and second lamps; and a combining mirror configured to combine emitted lights from the first and second lamps The combining mirror includes first and second reflection surfaces opposing the first and second lamps respectively, being abutted vertically with respect to each other, whereby forming an edge. Since optical axes of the first and second lamp are respectively inclined with respect to a reference axis being orthogonal to a system optical axis of the illumination apparatus, central axes of the lights from the first and second lamps are incident on a downstream optical system in a state of being slightly inclined with respect to the system optical axis after being reflected on the first and second reflection surfaces respectively. | 07-15-2010 |
20100188644 | METHOD AND DEVICE FOR PROJECTING AN IMAGE ON A PROJECTION SURFACE - A method and a device for projecting an image made up of pixels onto a projection surface, including a variable-intensity light source emitting a light beam and a decoupling device, and a deflection device directing the light beam onto a projection surface. In The light beam(s) are deflected such that the beams strike mirror facets of the polygonal mirror twice in a row. The diameter at which the beam strikes the first mirror facet of the polygonal mirror is adjusted such that it is dimensioned to practically not be cut by the facet edges. At the second strike, the light beam always intersects the mirror facet at the same location. | 07-29-2010 |
20100245784 | Projection type image display apparatus and projection optical system - A projection type image display apparatus includes: a light source; an illumination optical system that uniformly illuminates beams, which are emitted from the light source, on a surface of an image modulation element as a primary image plane; and a projection optical system that projects image information of the primary image plane modulated by the image modulation element on a screen as a secondary image plane in an enlarged manner. The projection optical system includes a first optical system having a positive refractive power and including a plurality of transmissive surfaces, and a second optical system having a positive refractive power and including a concave reflective surface. The first optical system has a first reflective surface disposed between any surfaces of the plurality of transmissive surfaces, and a second reflective surface disposed between the first optical system and second optical system. | 09-30-2010 |
20100259732 | LIGHT SOURCE DEVICE AND PROJECTOR - A light source device includes a light emitting tube having a light emitting section that emits light, a first sealing section on one side of the light emitting section formed integrally with the light emitting section, and a second sealing section on the other side of the light emitting section formed integrally with the light emitting section. A secondary reflecting mirror having a secondary reflecting surface covers part of a periphery of the light emitting section and reflects light emitted from the light emitting section. A primary reflecting mirror having a primary reflecting surface reflects the light emitted from the light emitting section and the light reflected by the secondary reflecting mirror. The secondary reflecting mirror has a first reference plane defined by a first boundary line as a boundary between the light emitting section and the first sealing section, which does not intersect with the secondary reflecting surface | 10-14-2010 |
20100302516 | PROJECTOR FOR PROJECTING AN IMAGE AND CORRESPONDING METHOD - The invention relates to a projector ( | 12-02-2010 |
20100315606 | Image display apparatus - A projection optical system including a projection lens, a first mirror that reflects a light from the projection lens, and a second mirror that widens an angle of a light from the first mirror by reflecting the light projects a light modulated according to an image signal from an optical engine unit. A third mirror reflects a light from the projection optical system. A screen transmits a light from the third mirror. An optical axis of the projection lens substantially matches an optical axis of the second mirror, and the light from the optical engine unit is shifted to a specific side from the optical axis of the projection lens. | 12-16-2010 |
20100321645 | LIGHT SOURCE UNIT AND PROJECTOR - A light source unit includes: an arc tube having a light-emitting portion; a secondary reflector covering part of the periphery of the light-emitting portion and being provided with a secondary reflecting surface for reflecting light emitted from the light-emitting portion; a primary reflector having a primary reflecting surface for reflecting the light emitted from the light-emitting portion and the light reflected from the secondary reflector; a first electrode; and a second electrode; wherein the second electrode is arranged at a position which causes an ionic wind to be induced by applying a voltage between the second electrode and the first electrode and causes air between the secondary reflecting surface and the light-emitting portion to flow, and either one of the first electrode or the second electrode is arranged between the arc tube and the secondary reflector. | 12-23-2010 |
20100328633 | LIGHT SOURCE UNIT, LIGHT SOURCE APPARATUS AND PROJECTOR - A light source unit includes a light source group wherein light sources are arranged into rows and columns so as to form a planar configuration and a primary reflecting mirror group disposed on an optical axis of the light source group to reflect light beams emitted from the light source group as light beams whose sectional areas are reduced in a column direction by narrowing intervals between light beams emitted from the light sources making up the rows of the light source group, the primary reflecting mirror group includes different strip-like reflecting mirrors disposed on optical axes of light beams emitted from the rows of the light source group in a step-like fashion, and the reflecting mirrors are disposed to eliminate intervals between reflected light beams from the reflecting mirrors, thereby making it possible to reduce the sectional areas of the light beams. | 12-30-2010 |
20110025990 | OPTICAL SYSTEM - An optical system is provided. The optical system includes an illumination system and a projection system. The illumination system includes a light source, a light guide unit, a first relay lens and a second relay lens, a reflection mirror, a reflection lens, and an image unit which are arranged sequentially along a light axis. The reflection lens includes a first surface which is coated with light-transmitting material and a second surface which has a reflection coating surface so that the light passing through the first surface is reflected. | 02-03-2011 |
20110025991 | PROJECTION TYPE DISPLAY APPARATUS - In a projection type display apparatus for enabling to display an image, by projecting an image on an image display element(s), enlargedly, upon a nearly horizontal surface, such as, a table, a reflection mirror for reflecting a light from a light source is so disposed that an optical axis of the light source is nearly perpendicular to an optical axis of a lens group having a plural number of lens elements, which are disposed symmetric with respect to the optical axis. | 02-03-2011 |
20110063585 | PROJECTOR - A projector includes: a light emitting device; a light modulation device adapted to modulate a light beam emitted from the light emitting device in accordance with image information; and a projection device adapted to project the image formed by the light modulation device, wherein the light emitting device includes a light emitting element formed of a super luminescent diode, and adapted to emit light when flowing current through an active layer sandwiched between a first cladding layer and a second cladding layer, and a base supporting the light emitting element, and provided with a first reflecting surface and a second reflecting surface each adapted to reflect the light emitted from the light emitting element, the light emitting element has a configuration of emitting the light from a first end surface and a second end surface, a direction of first outgoing light emitted from the first end surface of the light emitting element and a direction of second outgoing light emitted from the second end surface of the light emitting element are opposite to each other, the first reflecting surface reflects the first outgoing light, the second reflecting surface reflects the second outgoing light, and a direction of the first reflected light reflected by the first reflecting surface and a direction of the second reflected light reflected by the second reflecting surface are the same as each other. | 03-17-2011 |
20110063586 | PROJECTION DISPLAY DEVICE - A projection display device includes: an optical engine that emits image light in a direction parallel to a projection plane; a first reflective optical system that reflects the image light in a first direction away from the projection plane; a second reflective optical system that reflects the image light reflected by the first reflective optical system in a second direction away from the optical engine and closer to the projection plane; and a refractive optical system. The refractive optical system is divided into a first refractive optical system interposed between the optical engine and first reflective optical system, and second refractive optical system interposed between the first and second reflective optical system. The optical engine is arranged so that a mounting plane of optical components is almost perpendicular to a plane parallel to both of the first and second directions and is almost parallel to the projection plane. | 03-17-2011 |
20110085148 | LIGHT SOURCE DEVICE AND PROJECTOR - A light source device includes: an arc tube; a first reflection mirror which surrounds a part of the entire circumference of the arc tube around an optical axis; and a second reflection mirror disposed oppositely to the first reflection mirror, wherein the curvature at the cross point of a fourth plane extending in parallel with a plane extending perpendicular to the optical axis and containing the light emission area and the cross-sectional shape on a third plane passing through the light emission area, extending in parallel with the optical axis, and crossing a first plane passing through a light emission area and extending in parallel with the optical axis in the first reflection mirror is larger than the curvature at the cross point of the fourth plane and the cross-sectional shape on the first plane in the first reflection mirror. | 04-14-2011 |
20110188010 | OPTICAL SYSTEM FOR PROJECTION DEVICE - An optical system includes a light source array, a dichroic mirror set, a light converting device and a light guide pipe. The light source array is used for emitting a first homogeneous light. The dichroic mirror set is disposed in a light path of the first homogeneous light and used for reflecting a part of the first homogeneous light to the light guide pipe, transmitting the remaining part of the first homogeneous light to the converting device. The light converting device is disposed in the transmitting light path of the dichroic mirror and used for transferring the first homogeneous light into a second, third homogeneous light. The dichroic mirror is further used for reflecting the second, third homogeneous light to the light guide pipe. The light guide pipe is used for mixing the first, second and third homogeneous light to obtain a white light. | 08-04-2011 |
20110317135 | PROJECTOR - In a projection optical system comprising: two lens groups, and a curved plane mirror, wherein the projection optical system including two story structure, and having bend means for bending at least two times the light incident from an electro-optic modulator. | 12-29-2011 |
20120019791 | PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTION DEVICE - A projection optical system includes a first optical system, a second optical system, and first and second reflection mirrors. The first and second reflection mirrors are arranged on an optical path between an image forming element and a reflection surface of the second optical system, so that a direction of an optical path of light beams from the second reflection mirror to the reflection surface contains a component of a direction opposite to a predetermined direction from the image forming element to the first optical system, and a projection image of the image forming element on a conjugate surface, a projection of the reflection surface onto the conjugate surface, and a projection of the image forming element onto the conjugate surface are arrayed in this order on the conjugate surface. | 01-26-2012 |
20120113400 | EASILY-ASSEMBLED REAR PROJECTION SYSTEM WITH COMPACT STORAGE - An easily assembled and collapsible rear projection system comprises an easily dismantled and assembled fixture, a projector, a screen and three to five plane mirrors. The fixture is composed of extruded aluminum multi-hole tubes, H-shaped tubes, die-cast aluminum angled bolt holders, extruded aluminum coupling bolt holders, aluminum plates and bolts to join the tubes at various angles for mounting the projector and relative position of the plane mirrors. The multi-hole tubes have five holes passing through the tubes in parallel. There are four holes located at four corners and one at the center of the cross-section of the tube. The coupling bolt holder is used to join the tubes at a 180 degree angle. The angled bolt holder is used to join tubes at various angles. The fixture of the rear projection system is designed for fast dismantling into four modules, including top, a bottom, a front and a back subassemblies, by simply removing the coupling bolt holders. | 05-10-2012 |
20120133910 | OPTICAL DIGITAL DISPLAY APPARATUS - The present invention relates to an optical digital display apparatus, which comprises a housing, at least a display module, and an optical projecting lens set. The housing has a frame. The display module is disposed on one side in the frame and emits display light. The optical projecting lens set is disposed on the other side in the frame and receives the display light. Besides, the optical projecting lens set emits projection light to a retina and forms a display image. The present invention uses the optical projecting lens set to emit the display light to a retina and form the display image. Thereby, a user can know environmental parameters without stopping. In addition, by means of retina imaging, external obstruction on images can be prevented and hence enhancing convenience as well as safety of skiing. | 05-31-2012 |
20120236269 | DISPLAY DEVICE - A display device includes a projector, a Fresnel lens converting a projected light from the projector into a nearly parallelized light, a screen with light reflectivity on which an image by the projected light from the projector is generated, and a retrotransmissive material forming another image of an image located on one side of an element plane in a position in a space on the other side of the element plane such that the image and the other image are symmetric with respect to the element plane. The retrotransmissive material forms an image by a light that has obliquely entered the element plane, such that a position from which the light has obliquely entered the element plane and a position in which the image is formed are symmetric with respect to the element plane, and thereby forms a real image of the image on the screen. | 09-20-2012 |
20120327380 | LIGHT SOURCE APPARATUS - A light source apparatus includes a short-arc-type mercury lamp, a main reflection mirror, a sub-reflection mirror, and an optical element. The sub-reflection mirror surrounds an opening of the ellipsoid main reflection mirror. The sub-reflection mirror reflects a portion of the light emitted from the lamp toward the main reflection mirror. The light reflected by the sub-reflection mirror is reflected toward the main reflection mirror. The optical element is arranged between a second focal point of the main reflection mirror and the sub-reflection mirror. The light reflected by the main reflection mirror and passes through an opening of the sub-reflection mirror is incident upon an incidence-side face of the optical element. The optical element transmits visible light and to reflect ultraviolet light, while the main reflection mirror transmits infrared light and reflects ultraviolet light and visible light and the sub-reflection mirror reflects ultraviolet light and visible light. | 12-27-2012 |
20130063706 | MICRO-PROJECTION DEVICE WITH ANTISPECKLE VIBRATION MODE - A micro-projection system for projecting light on a projection surface, comprising: —at least one coherent light source ( | 03-14-2013 |
20130070217 | PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS - A projection optical system for use in an image display apparatus having an illumination optical system applying light from a light source, and an image display device receiving the light from the illumination optical system to form a projection image includes a projector lens composed of plural lenses, a first mirror, and a second mirror formed of a concave mirror. The projection optical system is configured to project the projection image onto a projection surface. A projection luminous flux passing through the projector lens to be incident on the first mirror is a luminous flux exhibiting divergence. The projection luminous flux reflected off the second mirror after having reflected off the first mirror is converged once, and the once converged projection luminous flux is projected onto the projection surface. A lens surface of a lens located closest to the first mirror among the lenses of the projector lens is convex. | 03-21-2013 |
20130083301 | REFLECTION APPARATUS AND BEAM PROJECTOR HAVING THE SAME - A reflection apparatus for a beam projector, and a beam projector including the reflection apparatus are provided. The reflection apparatus reflects and projects incident light from a projection optical system of the beam projector to an external surface, and includes a first mirror for reflecting the incident light from the projection optical system, and a second mirror that receives the light reflected from the first mirror and reflects the received light to the external surface. | 04-04-2013 |
20130094003 | MEMS MICRO-MIRROR DEVICE - A MEMS micro-minor device includes, a single package; a first mirror and second minor, wherein at least one of the minors is configured to oscillate along an oscillation axis; wherein both mirrors are located within the single package and are arranged such that as the at least one mirror oscillates, the light incident on the first micro-minor can be deflected to the second minor. | 04-18-2013 |
20130107232 | PROJECTION OPTICAL SYSTEM, AND IMAGE DISPLAY DEVICE USING THE SAME | 05-02-2013 |
20130107233 | IMAGE DISPLAYING APPARATUS | 05-02-2013 |
20130107234 | IMAGE DISPLAYING APPARATUS | 05-02-2013 |
20130114053 | IMAGE DISPLAY DEVICE - An image display device includes an image display element, a light source, an illumination system, a projector system comprising a refractive optical system including a plurality of lens groups, and a mirror train including a curved mirror, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of the image display element, and a second focus structure configured to move the respective lens groups along the normal line of the image display element by different amounts from those of the first focus structure. | 05-09-2013 |
20130141700 | PROJECTOR WITH SUPER LUMINESCENT DIODE - A projector includes: a light emitting device; a light modulation device adapted to modulate a light beam emitted from the light emitting device; and a projection device adapted to project the image formed by the light modulation device, wherein the light emitting device includes a light emitting element formed of a super luminescent diode, and adapted to emit light, and a base supporting the light emitting element with first and second reflecting surfaces to reflect the light emitted from the light emitting element. The light emitting element emits the light from first and second end surfaces. Directions of first and second outgoing light respectively emitted from the first and second end surfaces are opposite to each other. Directions of the first and second reflected light respectively reflected by the first and second reflecting surfaces are the same as each other. | 06-06-2013 |
20130162961 | PROJECTION TYPE DISPLAY APPARATUS - In a projection type display apparatus for enabling to display an image, by projecting an image on an image display element(s), enlargedly, upon a nearly horizontal surface, such as, a table, a reflection mirror for reflecting a light from a light source is so disposed that an optical axis of the light source is nearly perpendicular to an optical axis of a lens group having a plural number of lens elements, which are disposed symmetric with respect to the optical axis. | 06-27-2013 |
20130235356 | PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTION DEVICE - A disclosed projection optical system projects images on a surface to be projected on. The projection optical system includes a first optical system including at least one refraction optical system and having positive power as a whole, a folding mirror, and a second optical system including at least one reflection surface having power and having positive power as a whole. Further the folding mirror folds a light path from the first optical system to the second optical system, and in a plane including an optical axis of the first optical system and a normal line of the surface to be projected on, the following conditional expressions (1) through (3) are satisfied (1) 0.43≦d | 09-12-2013 |
20130335716 | Projection Graphics Using One-Way Vision Screens - A method and apparatus for one-way graphics using a projector that projects an image onto a screen, wherein the screen is comprised of a non-transparent material, and the screen contains voids sufficient in size and distribution to allow clarity of vision when viewed through from the side opposite the projection, and wherein the area of the screen substantially reflects the projected image so that on observer viewing the screen from the projection side of the screen sees the image that is projected onto the screen. The apparatus and method may further comprise a light-absorbing layer on the back of the screen, wherein the voids in the screen extend through the light-absorbing layer. The one-way screen may include additional transparent layers for mounting and adhesion. | 12-19-2013 |
20140085615 | PROJECTION DEVICE - A projection device includes a first and a second tilting mirror matrix, each including a plurality of tilting mirrors. A cover glass covers the tilting mirrors. An imaging lens system includes a relay lens system which images the tilting mirrors of the first tilting mirror matrix onto the tilting mirrors of the second tilting mirror matrix. Thus light reflected by the tilting mirrors of the first tilting mirror matrix onto tilting mirrors of the second tilting mirror matrix, and a projection lens system, which projects light reflected by tilting mirrors of the second tilting mirror matrix, in order to produce an image, is provided. The imaging lens system further includes a correction element which corrects at least one image error caused by the light obliquely passing through the cover glasses. | 03-27-2014 |
20140185021 | IMAGE DISPLAYING DEVICE - An image projecting device includes a light-emitting element that emits a laser beam and is secured to a housing and a mirror element adjustably disposed on the housing and that reflects the laser beam emitted from the light-emitting element to be directed to a position that has been determined to be a focusing target. The mirror element is adjustable while being disposed on the housing. | 07-03-2014 |
20140204352 | LIGHT EMITTING DEVICE, SUPER LUMINESCENT DIODE, AND PROJECTOR - A light emitting device includes: an active layer; and a first cladding layer and a second cladding layer that sandwich the active layer, wherein the active layer forms an optical waveguide that guides light, a traveling direction of the light guided in the optical waveguide changes at a first reflection part provided on a first side surface of the active layer, and the first reflection part is located outside of a region in which the first cladding layer and the second cladding layer are provided in a plan view. | 07-24-2014 |
20140218701 | LIGHT EMITTING DEVICE, SUPER-LUMINESCENT DIODE, AND PROJECTOR - A light emitting device includes a laminated body having an active layer, a first cladding layer, and a second cladding layer, the active layer constitutes an optical waveguide, the optical waveguide includes a first portion connecting a first exit section and a first reflecting section to each other, a second portion connecting the first reflecting section and a second reflecting section to each other, and a third portion connecting the second reflecting section and a second exit section to each other, and a current density in the first portion and a current density in the third portion are higher than a current density in the second portion. | 08-07-2014 |
20140218702 | IMAGE PROJECTION APPARATUS AND IMAGE PROJECTION METHOD - An image projection method includes: reflecting, by a concave mirror, light having transmitted through one or more lenses after forming an intermediate-focused image of the light; and projecting an image onto a projection plane through reflecting the light reflected by the concave mirror by a plane mirror that has an aspect ratio of 1.9 or more. | 08-07-2014 |
20140268072 | LIGHT SOURCE UNIT, LIGHTING APPARATUS AND IMAGE PROJECTION APPARATUS - A light source unit includes a first reflector having a reflection face; a second reflector having a reflection face; a plurality of light sources; and a light condensing optical system disposed between the first reflector and the second reflector. Light beams emitted from the plurality of light sources are reflected at a first reflection position on the reflection face of the first reflector, and then reflected at a second reflection position on the reflection face of the second reflector. The second reflection position is close to an optical axis of the light condensing optical system compared to the first reflection position. The light condensing optical system is configured such that the light beam passes through the light condensing optical system at least two times when the light beams reflect between the first reflector and the second reflector. | 09-18-2014 |
20140268073 | PROJECTION OPTICAL SYSTEM AND PROJECTOR APPARATUS - A projection optical system comprises an image forming unit that forms an image; a refractive optical system including a plurality of lenses that enlarges and projects the image on a screen; and a reflecting surface, wherein an intermediate image is formed between the refractive optical system and the reflecting surface, and the projection optical system satisfies conditions of “0.609-18-2014 | |
20140340658 | PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS - There is provided a projection optical system capable of projecting an image formed on an image forming unit on a projection plane, which has an extremely short projection distance and a small size. | 11-20-2014 |
20140375969 | MEMS-BASED RAPIDSCAN DEVICE AND PROJECTOR HAVING SAME - A device projecting images by micro electro-mechanical system (MEMS) technology mirrors includes a base, a first substrate, a first reflective mirror, a second substrate, and a second reflective mirror. The first substrate and the second substrate are adjacently positioned on the base. The first reflective mirror is formed on the first substrate by a micro electro-mechanical system (MEMS) technology and configured for receiving a light beam and rotating in two directions under control of the MEMS for reflect the received light in two directions. The second reflective mirror is formed on the rotatable second substrate to receive the image and be rotated, thus further adjusting the range of the projected images. | 12-25-2014 |
20150042968 | Light Source Apparatus, Projection Display Apparatus, and Illumination Method - Provided is a light source apparatus that includes light emitting tube ( | 02-12-2015 |
20150049313 | LIGHT SOURCE DEVICE FOR USE IN SELECTABLE ONE OF BACKLIGHT MOUDLE AND PROJECTOR - A light source device includes a laser diode module, a light guide plate selectively optically coupled to the laser diode module, a light projector selectively optically coupled to the laser diode module, and a light path switch module located between the laser diode module and the light guide plate and rotatably switched between a first position and a second position to change a light path of a laser beam emitted from the diode module to a first direction and a second direction different from the first direction. Along the first direction, the laser beam is guided to move toward the light guide plate. Along the second direction, the laser beam is guided to move toward the light projector. The light guide plate has a light incident face which is an arced face recessed from a corner of the light guide plate. | 02-19-2015 |
20150077725 | ILLUMINATION UNIT AND IMAGE DISPLAY DEVICE INCORPORATING SAME - An illumination unit includes a light source, an optical mixer to form secondary light sources from a light beam from the light source, and an illumination system to illuminate an optical modulator with the light beam from the optical mixer, including an optical element having an anamorphic surface, in which the optical element is rotated at a certain rotational angle about a rotational axis which is a normal line from a vertex of a surface of the optical element. | 03-19-2015 |
20150301435 | IMAGE PROJECTOR - An image projector includes a first deflector configured to deflect a first optical path and to form a second optical path, a second deflector configured to deflect the second optical path and to form a third optical path, a shifter configured to shift a projection lens in a vertical direction which corresponds to a longitudinal direction of the projected surface among directions orthogonal to an optical axis of the projection lens, a housing configured to house the first deflector and the second deflector, and a fixed plate fixed onto the housing at an end on an installing surface side of the housing, the projection lens and the shifter being fixed onto the fixed plate, wherein the third optical path is closer to an installing surface of the housing than the first optical path. | 10-22-2015 |
20150301436 | PROJECTION DEVICE - A projection device includes a first and a second tilting mirror matrix, each including a plurality of tilting mirrors. A cover glass covers the tilting mirrors. An imaging lens system includes a relay lens system which images the tilting mirrors of the first tilting mirror matrix onto the tilting mirrors of the second tilting mirror matrix. Thus light reflected by the tilting mirrors of the first tilting mirror matrix onto tilting mirrors of the second tilting mirror matrix, and a projection lens system, which projects light reflected by tilting mirrors of the second tilting mirror matrix, in order to produce an image, is provided. The imaging lens system further includes a correction element which corrects at least one image error caused by the light obliquely passing through the cover glasses. | 10-22-2015 |
20150338729 | ILLUMINATION OPTICAL SYSTEM AND IMAGE PROJECTION APPARATUS - The illumination optical system includes a first optical system configured to shape a light flux from a light source such that a light flux cross-sectional shape of the light flux becomes close to a rectangular shape of an illumination surface, a second optical system having an optical axis tilted with respect to a normal to the illumination surface and configured to introduce the light flux from the first optical system to the illumination surface, and a light-transmissive element having an entrance surface and an exit surface respectively forming mutually different angles with respect to the optical axis of the second optical system in a plane including the optical axis of the second optical system and the normal to the illumination surface. The light-transmissive element is disposed between the first optical system and the illumination surface. | 11-26-2015 |
20160026077 | PROJECTION-TYPE IMAGE DISPLAY APPARATUS - A projection-type image display apparatus includes a light source unit that emits light, an image generating unit that generates image light according to an input video signal, a light-guide optical system that guides the light from the light source unit to the image generating unit, and a projection optical system that projects the image light generated by the image generating unit. The light source unit includes a light source that produces light, phosphor that is excited by the light from the light source, and a dichroic mirror that directs the light from the light source to the phosphor. The dichroic mirror is arranged with an incident angle of the light from the light source being 50° or more and 60° or less. | 01-28-2016 |
20160103304 | PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS - There is provided a projection optical system capable of projecting an image formed on an image forming unit on a projection plane, which has an extremely short projection distance and a small size. | 04-14-2016 |