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| Number | Title | Issue Date |
| 8113667 | Projection optical system A projection optical system satisfies a conditional formula: 0.01 | 02/14/2012 |
| 8087789 | 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 respec... | 01/03/2012 |
| 8061856 | Projection apparatus and image projection changeover method The present invention provides a projection apparatus, comprising: a light source; a spatial light modulator for modulating the incident light emitted from the light source; a spatial light modulator control unit for generating, from an inputted image signal, a cont... | 11/22/2011 |
| 8052286 | System and method for utilizing a scanning beam to display an image A method includes generating a plurality of beams that each illuminate a separate portion of a spatial light modulator. The spatial light modulator has a first dimension of a first length and a second dimension of a second length. Each of the beams spans a portion o... | 11/08/2011 |
| 8029147 | Projection optical system and projection display device using the same A projection optical system having a magnification side and a reduction side for forming a magnified image on a magnification side image surface conjugate with a reduction side conjugate image surface includes, arranged in order from the reduction side, a first imag... | 10/04/2011 |
| 8029146 | Light source device and projector A light source device which produces illumination light for illuminating a target illumination area on a predetermined light receiving surface includes: a light source which emits light; a superimposing illumination element which superimposes the light emitted from ... | 10/04/2011 |
| 8016434 | Method and system for projecting an animated object and concurrently moving the object's projection area through an animation pattern A projection assembly and projection method for accurately reproducing animated and live characters, objects, and effects. The projection assembly uses a high precision robotic mirror system to achieve very high levels of image resolution, brightness, and contrast. ... | 09/13/2011 |
| 7997739 | Optical beam scanning device, image forming apparatus An optical beam scanning device includes a polygon mirror 80 in which tilt angles with respect to a rotation axis of the polygon mirror 80 of respective plural reflecting surfaces are set to angles corresponding to photoconductive members associated wi... | 08/16/2011 |
| RE42617 | Image projection system with an invisible-light reflector for heat dissipation An image projection system includes a light source for generating a light beam, a reflective housing, and an invisible-light reflector. The reflective housing includes an opening and forms an accommodating space for accommodating the light source so that the light b... | 08/16/2011 |
| 7984994 | 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... | 07/26/2011 |
| 7967452 | Projection type display apparatus A projection type display apparatus is provided that is safe even when a person looks directly into a laser beam. A laser operation control unit sets the output power of at least one laser source so that intensity A (mW/mm2) of the laser beam on at least ... | 06/28/2011 |
| 7959306 | 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 ha... | 06/14/2011 |
| 7959305 | Light recycling in a micromirror-based projection display system A digital micromirror projection display system is disclosed in which “off” pixel light is recaptured and recycled. In the disclosed system, a digital micromirror device directs incident light for “on” pixels in the image to be displayed through projection l... | 06/14/2011 |
| 7954963 | Light source and projector A light source device includes a discharge lamp and a reflection mirror having a plurality of concave curved surfaces. Each of the plurality of concave curved surfaces is an ellipsoidal surface. A first focal point of each of the ellipsoidal surfaces is disposed at ... | 06/07/2011 |
| 7946717 | Projection optical system and image projecting apparatus A projection optical system including a first optical system configured to form a second image conjugate to a first image and a second optical system configured to include a reflective optical element which reflects light from the second image and to project a third... | 05/24/2011 |
| 7938547 | Coherent light display system A display system includes a coherent light source that can emit a coherent light beam, an optical component that can direct the coherent light beam to a spatial light modulator, a transport mechanism that can move the optical component to produce a movement in the c... | 05/10/2011 |
| 7922341 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus In a projection optical system for use in an image projection apparatus illuminating an image display panel forming an image in accordance with a modulating signal with illumination light from a light source, the projection optical system includes first and second o... | 04/12/2011 |
| 7922340 | Projection optical system with enlargement at a varying magnification A projection optical system that receives light from a display element to project an image displayed by the display element onto a screen with enlargement at a varying magnification achieved by varying the projection distance to the screen has: a refractive optical ... | 04/12/2011 |
| 7896507 | 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 dispo... | 03/01/2011 |
| 7891824 | Reflector for a lighting device and illumination system of a projection apparatus A reflector for the lighting device and an illumination system of the projection apparatus are provided. The reflector comprises a first reflecting structure and a second reflecting structure disposed on the portion of the first reflecting structure. The reflecting ... | 02/22/2011 |
| 7891825 | 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... | 02/22/2011 |
| 7854519 | Illuminating device and projector that increase light utilization efficiency An illuminating device includes a first light source unit emitting illumination beams with a first optical axis; a second light source unit; and two reflecting elements arranged on both sides of an optical path of the first light source unit. The reflecting element ... | 12/21/2010 |
| 7850315 | 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 ref... | 12/14/2010 |
| 7841728 | Image display apparatus An image display apparatus 100 that displays an image using a light modulated according to an image signal includes a projection optical system 90 that includes a projection lens 20, a first mirror 30 that reflects a light from the projec... | 11/30/2010 |
| 7832877 | Optical modulators including incorporated into mobile terminal projector A mobile terminal includes an optical modulation projector. The mobile terminal also includes a control system, a projection control unit, and an optical modulation system. The control system outputs a projection control signal and image data. The projection control... | 11/16/2010 |
| 7832878 | Light emitting diode projection system The present invention generally relates to video and/or television projection systems, and more particularly, to LED based light source systems utilizing generally non-rotationally symmetric, preferably oblong or rectangular, non-imaging collection optics for provid... | 11/16/2010 |
| 7828448 | Illumination unit and image projection apparatus employing the same An illumination unit and an image projection apparatus employing the same. The illumination unit includes: a first reflective surface reflecting light incident thereon; a light-emitting device generating and emitting illuminating light; and a second reflective surfa... | 11/09/2010 |
| 7798655 | Projection unit and projection type image display apparatus A projection unit 17 effectively corrects out of focus due to a temperature rise. A mirror holding mechanism of a concave mirror 25 has a mirror holder 41 and a mirror holder base 42. The concave mirror 25 is slidably housed in the... | 09/21/2010 |
| 7766491 | Optical beam scanning device, image forming apparatus An optical beam scanning device includes a polygon mirror 80 in which tilt angles with respect to a rotation axis of the polygon mirror 80 of respective plural reflecting surfaces are set to angles corresponding to photoconductive members associated wi... | 08/03/2010 |
| 7744226 | Projection type image display apparatus A projection type image display apparatus has: an illumination optical system generating illumination light; a projection optical system projecting an image light onto a screen; a digital micromirror device (DMD) modulating the illumination light so as to form the i... | 06/29/2010 |
| 7736006 | Substrate-guided display with improved image quality An image-guiding substrate including an image output portion including a plurality of mirrors configured to receive propagated rays and launch the propagated rays toward a viewing region, each mirror having a partial reflectivity of substantially (1/Y)*[1/(X+1)], wh... | 06/15/2010 |
| 7731372 | Projector A projector comprises a light source unit, a light guide element, a first focus element, a second focus element, a micromirror element and an image unit. The light source unit provides a light beam. The first focus element comprises a first focal length f1 | 06/08/2010 |
| 7717573 | Projection display apparatus A projection display apparatus has a light source, an image forming device for modulating light emitted from the light source with an image signal supplied thereto, and a reflective optical system for magnifying and projecting an image generated by the image forming... | 05/18/2010 |
| 7661830 | Lamp device and projector equipped with the same Aspects of the invention can provide a lamp device that is capable of avoiding concentration of stresses in a sub-mirror fixing portion of an arc tube. The lamp device can include an arc tube provided with a bulb portion encapsulating inside a pair of electrodes, an... | 02/16/2010 |
| 7654677 | Yokeless hidden hinge digital micromirror device A micromirror array 110 fabricated on a semiconductor substrate 11. The array 110 is comprised of three operating layers 12, 13, 14. An addressing layer 12 is fabricated on the substrate. A hinge layer 13 is spaced above the... | 02/02/2010 |
| 7637621 | 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 an image display panel forming an image in accordance with a modulating signal with illumination light from a light source. The projection optical system includes first and second opti... | 12/29/2009 |
| 7631975 | 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 an image display panel forming an image in accordance with a modulating signal with illumination light from a light source. The projection optical system includes first and second opti... | 12/15/2009 |
| 7607786 | Light deflector, light deflection array, optical system, image forming device, and projection type image display apparatus A light deflector includes a substrate; a plurality of control members provided at edge parts of the substrate, the control members having upper parts where stoppers are situated; a fulcrum member provided on an upper surface of the substrate, the fulcrum member hav... | 10/27/2009 |
| 7591560 | Reflection optical system and projection display apparatus using the same A reflection optical system placed between a light valve 5 and a screen 4, wherein curved surfaces are only three reflection surfaces of first to third mirrors 1 to 3, and satisfies the following: (1) θL | 09/22/2009 |
| 7566135 | Light tunnel of DLP projection system In order to provide a light transmitting space to reinforce an intensity of a light tunnel in a DLP projection system, and increase an heat-resistance, provided is a light tunnel of a DLP projection system including a plurality of reflection panels provided in an an... | 07/28/2009 |
