Source: http://www.google.com/patents/US7510284?dq=7,546,338
Timestamp: 2017-03-26 21:27:28
Document Index: 605892151

Matched Legal Cases: ['§120', '§119', 'Application No. 60', '§119', 'Application No. 60', '§119', 'Application No. 60', '§119', 'Application No. 60', '§119', 'Application No. 60']

Patent US7510284 - Projection-type display devices including redundant laser sets - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsDescribed herein are display devices that provide projection-type video output and use redundant sets of lasers to generate light. The laser set produces a desired amount of light, e.g., for a primary color. A redundant laser set includes more lasers than that needed to produce the desired amount of...http://www.google.com/patents/US7510284?utm_source=gb-gplus-sharePatent US7510284 - Projection-type display devices including redundant laser setsAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS7510284 B2Publication typeGrantApplication numberUS 11/741,150Publication dateMar 31, 2009Filing dateApr 27, 2007Priority dateJul 16, 2003Fee statusPaidAlso published asUS7281807, US7703930, US7806535, US8147074, US8366282, US8641209, US20050057542, US20070195276, US20070205300, US20070285344, US20080111974, US20100171936, US20120154764, US20130114047Publication number11741150, 741150, US 7510284 B2, US 7510284B2, US-B2-7510284, US7510284 B2, US7510284B2InventorsWilliam J. PlutOriginal AssigneePlut William JExport CitationBiBTeX, EndNote, RefManPatent Citations (91), Referenced by (17), Classifications (18), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetProjection-type display devices including redundant laser sets
US 7510284 B2Abstract
Described herein are display devices that provide projection-type video output and use redundant sets of lasers to generate light. The laser set produces a desired amount of light, e.g., for a primary color. A redundant laser set includes more lasers than that needed to produce the desired amount of light. For example, a set of six lasers may only need five lasers to generate and emit a desired amount of light. The sixth laser allows failure of one laser in the set to not compromise operability of the entire set—and the display device. In addition, extra lasers in a laser set also allows the lasers to be cycled for heat purposes and to extend longevity of individual lasers in the set.
a set of lasers for producing a desired amount of light, each laser in the set of lasers configured to produce light in a wavelength range related to a primary color and including a temperature sensor configured to detect temperature of a portion of the laser, wherein the total number of lasers in the set of lasers is greater than a number of lasers needed to produce the desired amount of light;
control circuitry configured to determine a subset of lasers in the set of lasers that produces the desired amount of light, wherein the control circuitry is configured to turn off a heating laser in the set of lasers when the heating laser reaches a threshold temperature;
an optical modulation device configured to selectively transmit light produced by the subset of lasers according to video data included in a video signal provided to the optical modulation device;
an optics system, arranged to receive light produced by the subset of lasers before receipt by the optical modulation device, and configured to increase flux area of the light; and
a projection lens system configured to project light transmitted by the optical modulation device along a projection path.
2. The display device of claim 1 wherein the control circuitry is configured to determine the subset of lasers based on the operability of each laser in the set of lasers.
3. The display device of claim 1 wherein the wavelength is between about 615 and about 690 nanometers and the primary color is red.
4. The display device of claim 1 wherein each laser in the set of lasers is a diode laser.
5. The display device of claim 1 wherein each laser in the set is a diode pumped solid-state laser.
6. The display device of claim 1 wherein the control circuitry is further configured to determine the subset of lasers based on a temperature of each laser in the set of lasers.
7. The display device of claim 1 wherein the laser set includes from 2 to 40 lasers.
8. The display device of claim 1 wherein the laser set includes one more laser than the number of lasers needed to produce the desired amount of light.
9. The display device of claim 8 wherein the laser set includes two more lasers than the number of lasers needed to produce the desired amount of light.
10. A projection-type display device comprising:
a set of diode lasers for producing a desired amount of light, each diode laser in the set of diode lasers configured to produce light in a wavelength range related to a primary color and including a temperature sensor configured to detect temperature of a portion of the laser, wherein the total number of diode lasers in the set of diode lasers is greater than a number of diode lasers needed to produce the desired amount of light;
control circuitry configured to determine a subset of diode lasers in the set of diode lasers that produces light for an image, wherein the control circuitry is configured to turn off a heating laser in the set of lasers when the heating laser reaches a threshold temperature;
an optical modulation device configured to selectively transmit light produced by the subset of diode lasers according to video data included in a video signal provided to the optical modulation device;
an optics system, arranged to receive light produced by the subset of diode lasers before receipt by the optical modulation device, and configured to increase flux area of the light; and
11. The display device of claim 10 wherein the control circuitry is configured to determine the subset of diode lasers based on the operability of each diode laser in the set of lasers.
12. The display device of claim 10 wherein the control circuitry is further configured to determine which diode lasers in the set of diode lasers produces light based on a temperature of each diode laser in the set of diode lasers.
13. The display device of claim 10 wherein each diode laser in the diode laser set further comprises a photosensor that detects light produced by each diode laser.
14. The display device of claim 10 wherein the diode laser set includes two more diode lasers than the number of diode lasers needed to produce the desired amount of light.
15. The display device of claim 10 wherein the wavelength is between about 615 and about 690 nanometers and the primary color is red.
16. The display device of claim 10 wherein each diode laser in the diode laser set includes a) a lasing medium in a lasing chamber for producing the light, and b) an output lens for emitting the light. Description
This application claims priority under U.S.C. §120 from co-pending U.S. patent application Ser. No. 10/891,840, filed Jul. 15, 2004 and entitled, “POSITIONABLE PROJECTION DISPLAY DEVICES”, which is incorporated herein for all purposes; the Ser. No. 10/891,840 patent application also claimed under 35 U.S.C. §119(e) from U.S. Provisional Patent Application No. 60/487,868 filed Jul. 16, 2003, which is incorporated by reference herein for all purposes; the Ser. No. 10/891,840 patent application also claims priority under 35 U.S.C. §119(e) from U.S. Provisional Patent Application No. 60/487,871 filed Jul. 16, 2003, which is incorporated by reference herein for all purposes; the Ser. No. 10/891,840 patent application also claims priority under 35 U.S.C. §119(e) from U.S. Provisional Patent Application No. 60/487,691 filed Jul. 16, 2003, which is incorporated by reference herein for all purposes; the Ser. No. 10/891,840 patent application also claims priority under 35 U.S.C. §119(e) from U.S. Provisional Patent Application No. 60/487,849 filed Jul. 16, 2003, which is incorporated by reference herein for all purposes; the Ser. No. 10/891,840 patent application also claims priority under 35 U.S.C. §119(e) from U.S. Provisional Patent Application No. 60/487,744 filed Jul. 16, 2003, which is incorporated by reference herein for all purposes.
Housing 20 defines outer dimensions of display device 10 and an inner chamber 65 within display device 10. Housing 20 also provides mechanical protection for internal components of display device 10. As shown, housing 20 comprises four walls 22 a-d, a top wall (not shown), and a bottom wall (not shown). Walls 22 define an inner chamber 65 within housing 20. Walls 22 a-d comprise a suitably stiff material that grants structural rigidity for display device 10 and mechanical protection for internal components within housing 20, such as a metal or molded plastic. One or more walls 22 a-d of housing 20 may also include air vents 24 that permit airflow between chamber 65 and an environment external to housing 20. Vents 24 may also be placed on the top and bottom walls of housing 20.
As mentioned above, one or more lasers are installed on a circuit board 430, which mounts, and provides electrical communication for, each laser installed thereon. FIG. 3 illustrates a board 430 with five diode lasers 400 a-e installed thereon in accordance with one embodiment of the present invention. This configuration reduces space for laser sets 12, 14 and 16 within display device 10. Control circuitry 412 on board 430 regulates current provided to each diode laser 400 a-e. Although board 430 shows five diode lasers 400, it is understood that board 430 may include a combination of diode lasers 400 and DPSS lasers 450. In one embodiment, diode lasers 400 a-e all output light having a similar wavelength, such as red. In another embodiment, lasers on a single board 430 output different colors.
The power of an individual laser in a color set may vary with design, while the number of lasers in each laser set 12, 14 and 16 and on each board 430 will vary with the output power of individual lasers in the set and the total luminous intensity for each color in display device 10. Output power for each laser 400 or 450 may range from 5 mW up to 10 W, for example. Red diode lasers 400 are commercially available with power outputs up to 500 mW, and up to 1000 mW with suitable drive and current control electronics. Green DPSS frequency doubled frequency doubled Nd:YAG lasers are also commercially available with power outputs ranging from 5 mW each to 10 W each. In one embodiment, each set 12, 14 and 16 comprises from 1 to 60 lasers. In another embodiment, from 4 to 20 lasers are suitable to achieve a cumulative power output for an individual color. For example, if 3 W of luminous output power is desired for each color, red diode laser set 12 may include 6×500 mW diode lasers 400 arranged on one or two boards 430 or 3×1000 mW diode lasers 400 arranged on a single board 430, green laser set 14 may include 6×500 mW DPSS lasers 450 arranged on one or two boards 430 or 3×1000 mW DPSS lasers 450 arranged on a single board 430, while blue laser set 16 may include 6×500 mW DPSS lasers 450 arranged on one or two boards 430 or 3×1000 mW DPSS lasers 450 arranged on a single board 430. For larger sets, multiple boards 430 for each color may be implemented and arranged side-by-side. In this manner, significant laser power may be generated in a compact and highly portable package.
In one embodiment, display device 10 includes redundant light supply for each color and each laser set 12, 14 and 16. This implies that each set 12, 14 and 16 includes more lasers and a greater maximum luminous power output for each color than needed for normal operation of display device 10. One or more lasers in each set may then be turned off during normal operation. Thus, in the example described above where 3 W of total luminous output power is desired for red diode laser set 12, set 12 may include 8×500 mW diode lasers 400 arranged on one or two boards 430 or 4×1000 mW diode lasers 400 arranged on a single board 430. In the former case, two of the 500 mW diode lasers 400 are turned off during normal usage. In the latter case, one of the 1000 mW diode lasers 400 is turned off during normal usage. Similarly, green laser set 14 may include 8×500 mW DPSS lasers 450 arranged on one or two boards 430 or 4×1000 mW DPSS lasers 450 arranged on a single board 430, while blue laser set 16 may include 8×500 mW DPSS lasers 450 arranged on one or two boards 430 or 4×1000 mW DPSS lasers 450 arranged on a single board 430.
Although the present invention has been described primarily so far with respect to a display device that employs a reflective light modulator of a digital micromirror design in a single light path system, the present invention may also employ other types of light modulators and light path designs. For example, fiber-optic cabling 72 may be arranged for a multiple light path design to transmit light to three primary color dedicated LCD optical modulators, or to three primary color dedicated DMD optical modulators. In the case of an LCD optical modulation device, selective transmission of light comprises selective passage of light through a liquid crystal medium on a pixel by pixel basis. FIG. 4B illustrates a display device 10 in which multiple fiber optic cables 72 a-c transmit light from laser sets 12, 14 and 16 to multiple light optical modulation devices 44 a-c in accordance with another embodiment of the present invention.
Light from each laser 400 or 450 in sets 12, 14 and 16 is thus first transmitted into a fiber-optic cable 202 dedicated to each laser. The light is then subsequently routed through a junction 206 a-c for each primary color, and transmitted into a common fiber-optic cable 204 a-c for each primary color. Junctions 206 and common fiber-optic cables 204 were described above with respect to arrangement 200 in FIG. 4A. In this case however, each common fiber optic cable 202 a, 202 b, and 202 c services a primary color. More specifically, common fiber optic cable 202 a transmits red light emitted by red diode laser set 12 to relay optics system 80, fiber optic cable 202 b transmits green light emitted by green laser set 14 to optics system 80, and fiber optic cable 202 c transmits the light emitted by blue diode laser set 12 to optics system 80. Similar to FIG. 1, optics system 80 converts light receive from fiber-optic cabling 204 to light suitable for transmission onto an optical modulation device 44. In addition, a pair of fly-eye lenses or an integrator tunnel may be disposed along the light path before each optical modulation device 44 to re-distribute light uniformly across the flux transmitted onto optical modulation device 44.
As shown in FIG. 4B, optical modulation devices 44 a-c are transmissive type LCD panels that each spatially filter light and provide a color image onto combining optics 236, which emits a composite image towards projection lenses 112 along optical path 31. For the triple path design shown in FIG. 4B, lasers in sets 12, 14 and 16 may be left on continuously to provide continuous laser light to optical modulation devices 44 a-c. In this case, control circuitry 76 for display device 10 synchronizes frame and pixel data between each of the optical modulation devices 44 a-c. The triple path design shown in FIG. 4B advantageously results in a brighter image than a shared color system that relies on one optical modulation device 44.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4969733Oct 2, 1989Nov 13, 1990Dukane CorporationFoldable portable overhead projectorUS4978218Mar 1, 1990Dec 18, 1990Minnesota Mining And Manufacturing CompanyFolding arm for overhead projectorUS5098184Apr 30, 1990Mar 24, 1992U.S. Philips CorporationOptical illumination system and projection apparatus comprising such a systemUS5136675Dec 20, 1990Aug 4, 1992General Electric CompanySlewable projection system with fiber-optic elementsUS5170196Nov 29, 1991Dec 8, 1992Sony CorporationPortable projectorUS5278596May 19, 1992Jan 11, 1994Machtig Jeffrey SLCD projection apparatusUS5287132Jun 14, 1993Feb 15, 1994Fuji Photo Film Co., Ltd.Video projectorUS5343489Jul 13, 1992Aug 30, 1994Carl-Zeiss-StiftungArrangement for shaping a laser beam and for reducing the coherence thereofUS5347324Jun 25, 1992Sep 13, 1994Fuji Photo Film Co., Ltd.Video projector with battery and replaceable lamp unitUS5394254Jan 3, 1994Feb 28, 1995Greyhawk Systems, Inc.Light valve projector assembly including fiber optic plate with fiber bundle perimeter less than twice as reflective as elsewhereUS5416541May 16, 1994May 16, 1995Fog; Stephen C.Folding portable overhead projectorUS5418583Mar 30, 1993May 23, 1995Matsushita Electric Industrial Co., Ltd.Optical illumination system and projection display apparatus using the sameUS5515391Mar 7, 1994May 7, 1996Sdl, Inc.Thermally balanced diode laser packageUS5534950Oct 4, 1993Jul 9, 1996Laser Power CorporationHigh resolution image projection system and method employing lasersUS5612968Apr 20, 1995Mar 18, 1997Bell Communications Research, Inc.Redundant multi-wavelength laser arraysUS5624173Mar 19, 1996Apr 29, 1997Davidson; StevenVideo frame systemUS5651599Feb 24, 1995Jul 29, 1997Seiko Epson CorporationProjection type liquid crystal projectorUS5654776Oct 13, 1995Aug 5, 1997Kabushiki Kaisha ToshibaMultiscreen displaying apparatusUS5668595Mar 23, 1993Sep 16, 1997Canon Kabushiki KaishaMulti-lens imaging apparatus having a mechanism for combining a plurality of images without displacement of registrationUS5700076Aug 18, 1994Dec 23, 1997Proxima CorporationLaser illuminated image producing system and method of using sameUS5782548Dec 15, 1995Jul 21, 1998Seiko Epson CorporationImage projection system and a method of controlling a projected pointerUS5818639Sep 20, 1996Oct 6, 1998Kabushiki Kaisha ToshibaMultiscreen displaying apparatus and screen fitting structureUS5851060Sep 12, 1996Dec 22, 1998Nikon CorporationProjective display deviceUS5927985Sep 30, 1997Jul 27, 1999Mcdonnell Douglas CorporationModular video display systemUS5959702Oct 4, 1996Sep 28, 1999Goodman; John MottLensless video projectorUS5959778Dec 11, 1997Sep 28, 1999Nikon CorporationProjection-display apparatusUS5971545Jun 25, 1997Oct 26, 1999Hewlett-Packard CompanyLight source for projection displayUS5990983Sep 30, 1994Nov 23, 1999Laser Power CorporationHigh resolution image projection system and method employing lasersUS6075504Mar 19, 1993Jun 13, 2000Photonics Systems, Inc.Flat panel display screens and systemsUS6089717Sep 2, 1997Jul 18, 2000Sony CorporationProjector apparatusUS6137638Jul 28, 1999Oct 24, 2000Nittoh Kogaku K.K.Projection zoom lens system and projector apparatusUS6155687Jul 16, 1999Dec 5, 2000Infocus CorporationLight guide for use in a color wheel display synchronization apparatus and methodUS6170953Mar 22, 1999Jan 9, 2001Samsung Electronics Co., Ltd.Laser video projector for projecting image to a plurality of screensUS6179426Mar 3, 1999Jan 30, 20013M Innovative Properties CompanyIntegrated front projection systemUS6183092May 1, 1998Feb 6, 2001Diane TroyerLaser projection apparatus with liquid-crystal light valves and scanning reading beamUS6185047Sep 22, 1999Feb 6, 2001Infocus CorporationImage projection system packaged to operate lying flat with a very low profileUS6191826Nov 19, 1997Feb 20, 2001Sony CorporationProjector apparatusUS6224216Feb 18, 2000May 1, 2001Infocus CorporationSystem and method employing LED light sources for a projection displayUS6246446Jun 10, 1997Jun 12, 2001Texas Instruments IncorporatedAuto focus system for a SLM based image display systemUS6317170Jun 30, 1998Nov 13, 2001Samsung Electronics Co., Ltd.Large screen compact image projection apparatus using a hybrid video laser color mixerUS6323984Oct 11, 2000Nov 27, 2001Silicon Light MachinesMethod and apparatus for reducing laser speckleUS6350033Nov 9, 1999Feb 26, 2002Seiko Epson CorporationProjectorUS6367935Jan 13, 1998Apr 9, 2002Eads Deutschland GmbhMethod and device for eliminating image speckles in scanning laser image projectionUS6373646Nov 3, 1999Apr 16, 2002Laserpromotions Beheer B.V. I.O.Laser projection apparatusUS6392821Sep 28, 2000May 21, 2002William R. Benner, Jr.Light display projector with wide angle capability and associated methodUS6394606Sep 23, 1999May 28, 2002Sony CorporationProjection-type display deviceUS6416184Feb 25, 2000Jul 9, 2002Seiko Epson CorporationProjector with dustproof ventilating memberUS6426781Mar 26, 1999Jul 30, 2002Samsung Electronics Co., Ltd.Laser video projectorUS6426836Jan 31, 2001Jul 30, 2002Hewlett-Packard Co.Method and apparatus for reducing the formation of spots in laser projectionUS6435682May 11, 2000Aug 20, 2002Victor Company Of Japan, LimitedLaser imaging using a spatial light modulatorUS6445487Feb 20, 2001Sep 3, 2002Eastman Kodak CompanySpeckle suppressed laser projection system using a multi-wavelength doppler shifted beamUS6454417Mar 2, 2000Sep 24, 2002Minolta Co., Ltd.Projection optical system comprising an optical function surface for reflecting or transmitting light from a spatial light modulatorUS6471356Aug 11, 2000Oct 29, 2002Infocus CorporationPortable image projection system having reduced weight and profileUS6472828Jun 23, 2000Oct 29, 2002Infocus CorporationControl for projector lamp heat dissipationUS6480634May 18, 2000Nov 12, 2002Silicon Light MachinesImage projector including optical fiber which couples laser illumination to light modulatorUS6481852Mar 5, 2001Nov 19, 2002Nec CorporationProjector apparatus comprising a light composing optical system vertically stacked with respect to a light separation optical systemUS6481855Jan 12, 2001Nov 19, 2002Infocus CorporationKeystone distortion correction system for use in multimedia projectorsUS6488380Nov 17, 2000Dec 3, 2002Seiko Epson CorporationProjector having a light shielding memberUS6490011Dec 18, 1998Dec 3, 2002Caterpillar IncDisplay device convertible between a cave configuration and a wall configurationUS6491398Dec 28, 1999Dec 10, 2002Nec Viewtechnology, Ltd.Video projectorUS6501866Feb 23, 2001Dec 31, 2002Mahi Networks. Inc.Method and apparatus for cross-connecting optical transmission signalsUS6594090Aug 27, 2001Jul 15, 2003Eastman Kodak CompanyLaser projection display systemUS6600590Feb 20, 2001Jul 29, 2003Eastman Kodak CompanySpeckle suppressed laser projection system using RF injectionUS6604829Dec 19, 2002Aug 12, 20033M Innovative Properties CompanyCompact integrated front projection systemUS6625381Feb 20, 2001Sep 23, 2003Eastman Kodak CompanySpeckle suppressed laser projection system with partial beam reflectionUS6636339May 4, 2001Oct 21, 2003Samsung Electronics Co., Ltd.Optical scanner, laser image projector adopting the optical scanner, and method of driving the laser image projectorUS6665478Oct 13, 2000Dec 16, 2003AlcatelFiber optic cable with non-corrugated armor shieldingUS6709114Jun 21, 2000Mar 23, 2004Thomson Licensing S.A.Spherical mounting system for three axis adjustment of light projector assembly in a projection televisionUS6728274Sep 14, 2001Apr 27, 2004Multiwave Networks Portugal LdaMulti-wavelength laser apparatus and methodUS6736517Feb 28, 2002May 18, 2004Principia Lightworks Inc.Dual mode laser projection system for electronic and film imagesUS6747781Jul 2, 2001Jun 8, 2004Silicon Light Machines, Inc.Method, apparatus, and diffuser for reducing laser speckleUS6764107May 8, 2003Jul 20, 2004Hassan ObahiSelf-sealing pre-assembled endfitting/coupling for corrugated tubingUS6769772Oct 11, 2002Aug 3, 2004Eastman Kodak CompanySix color display apparatus having increased color gamutUS6771326Oct 26, 2001Aug 3, 2004General Atomics, Inc.Multi-screen laser projection system using a shared laser sourceUS6790205Sep 27, 2000Sep 14, 2004Ya-Man Ltd.Laser beam projectorUS6801299Jul 31, 2002Oct 5, 2004Asml Holding N.V.System for laser beam expansion without expanding spatial coherenceUS6807010Mar 24, 2003Oct 19, 2004Eastman Kodak CompanyProjection display apparatus having both incoherent and laser light sourcesUS6817632Sep 13, 2002Nov 16, 2004Fleetguard, Inc.Flex tube joint with torsion reliefUS6821026Sep 4, 2002Nov 23, 2004International Business Machines CorporationRedundant configurable VCSEL laser array optical light sourceUS6863402May 6, 2004Mar 8, 2005Eastman Kodak CompanyApparatus for displaying a color image from digital dataUS6864861Dec 29, 1998Mar 8, 2005Brillian CorporationImage generator having a miniature display deviceUS6947459Nov 25, 2002Sep 20, 2005Eastman Kodak CompanyOrganic vertical cavity laser and imaging systemUS7088321 *Mar 30, 2001Aug 8, 2006Infocus CorporationMethod and apparatus for driving LED light sources for a projection displayUS7156522Jul 14, 2004Jan 2, 2007Plut William JProjection-type display devices with reduced weight and sizeUS7281596Nov 4, 2003Oct 16, 2007Yamaha Hatsudoki Kabushiki KaishaDrive belt cooling structure for engineUS20020126479Mar 7, 2002Sep 12, 2002Ball Semiconductor, Inc.High power incoherent light source with laser arrayUS20040135874Jan 14, 2003Jul 15, 2004Eastman Kodak CompanyLight source using large area LEDsUS20050147135Feb 16, 2005Jul 7, 2005Eastman Kodak CompanyMulti-spectral laser array and optical systemUS20070145915 *Feb 8, 2007Jun 28, 2007Color Kinetics IncorporatedLighting methods and systemsUS20070195276Apr 27, 2007Aug 23, 2007Plut William JProjection-type display devices with reduced speckleUS20070205300Apr 27, 2007Sep 6, 2007Plut William JPositioning interfaces for projection display devices* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS7806535Apr 27, 2007Oct 5, 2010Plut William JLow power projection display devicesUS8132920Mar 19, 2007Mar 13, 2012Motorola Mobility, Inc.Thin microprojector with switched beam bender and method of operating the sameUS8147074Mar 18, 2010Apr 3, 2012Transpacific Image, LlcPositioning interfaces for projection display devicesUS8366282Feb 27, 2012Feb 5, 2013Transpacific Image, LlcPositioning interfaces for projection display devicesUS8569942Dec 1, 2010Oct 29, 2013Sharp Kabushiki KaishaVehicle headlamp and illuminating deviceUS8641209Dec 26, 2012Feb 4, 2014Transpacific Image, LlcPositioning interfaces for projection display devicesUS8733996May 16, 2011May 27, 2014Sharp Kabushiki KaishaLight emitting device, illuminating device, and vehicle headlampUS8833991Feb 8, 2011Sep 16, 2014Sharp Kabushiki KaishaLight emitting device, with light guide member having smaller exit section, and illuminating device, and vehicle headlight including the sameUS8876344Jul 18, 2013Nov 4, 2014Sharp Kabushiki KaishaVehicle headlamp with excitation light source, light emitting part and light projection sectionUS20070195276 *Apr 27, 2007Aug 23, 2007Plut William JProjection-type display devices with reduced speckleUS20070285344 *Apr 27, 2007Dec 13, 2007Plut William JLow power projection display devicesUS20090279054 *Apr 15, 2009Nov 12, 2009Coretronic CorporationProjector and maintenance system for ballast thereofUS20100103332 *Oct 27, 2008Apr 29, 2010Motorola, Inc.Image projector driving multiple display screensUS20110148280 *Dec 1, 2010Jun 23, 2011Sharp Kabushiki KaishaVehicle headlamp and illuminating deviceUS20110194302 *Feb 8, 2011Aug 11, 2011Sharp Kabushiki KaishaLight emitting device, illuminating device, and vehicle headlightUS20110279039 *May 13, 2011Nov 17, 2011Sharp Kabushiki KaishaLaser downlight and laser downlight systemUS20140125958 *Apr 30, 2013May 8, 2014Hon Hai Precision Industry Co., Ltd.Projector with dissipatiion sinks and fan* Cited by examinerClassifications U.S. Classification353/52, 348/798, 353/31, 353/85, 362/230, 362/553, 362/555, 348/801International ClassificationG03B21/16, H04N5/74, H01S3/00, G03B21/00, G03B21/20Cooperative ClassificationG03B21/005, H04N9/3141, G03B21/16European ClassificationH04N9/31R, G03B21/00Legal EventsDateCodeEventDescriptionOct 11, 2007ASAssignmentOwner name: HONEYWOOD TECHNOLOGIES LLC, CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PLUT, WILLIAM J;REEL/FRAME:019950/0630Effective date: 20071001Feb 4, 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