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| Number | Title | Issue Date |
| 8107169 | Programmable light source A programmable spectrum light source is disclosed. In one embodiment, the programmable light source comprises a light source, a spectrum separation system that splits the light into its constituent spectral components, a light modulator that modulates the spectral c... | 01/31/2012 |
| 8054554 | Display apparatus A display apparatus is provided. The display apparatus includes a front side that is exposed the outside. A refractor or set of refractors is positioned so as to minimize the appearance of a shield member to a viewer, thus causing a non-display region of the display... | 11/08/2011 |
| 7796340 | Method and apparatus for maximum light intensity for an optical illumination system An illumination system using, in place of a more typical beam splitter, two right angle triangular prisms that are aligned to each other along their respective hypotenuses to form a cube, but without any reflective materials being used at their interface, and with t... | 09/14/2010 |
| 7557994 | Optical device, transfer mold, and image pickup apparatus An optical device includes a refracting surface refracting light, a flat surface transmitting light, and a prism group including prism elements having at least the refracting surface. Here, the prism elements are arranged with a plurality of pitches therebetween on ... | 07/07/2009 |
| 7443594 | Color display device using separate diffracted light and illumination light A display device includes a condenser unit, an illumination lens system, a plurality of diffractive light modulators, a mirror for separating illumination light from diffracted light, a polarized beam separator, a filter unit and a projection unit. The condenser uni... | 10/28/2008 |
| 7440192 | Optical system providing several beams from a single source A system to produce orthogonal beams includes a laser diode operating in conjunction with a collimating lens, with or without an aperture, and a simple compact optic. At least one collimated beam is directed toward an optic comprised of components that are bonded to... | 10/21/2008 |
| 7440191 | Method for manufacturing cross prism For the purpose of depositing deviation-free dichroic coatings of high plane rectitude, there is disclosed a method starting with preparation of glass assembly units each composed of first and second glass members of different lengths. A first dichroic coating 10... | 10/21/2008 |
| 7437034 | Device for coupling the light of multiple light sources A device for coupling the light of multiple light sources (2, 3) that substantially consists of a reflectance surface (10, 11) for one or more of said light sources (2, 3) and at least one integration rod (14) having an incident surface (... | 10/14/2008 |
| 7429110 | Projector-type image display apparatus At least one exemplary embodiment is directed to a projector which includes several optical elements, reflective devices and beam splitters, arranged to reduce back reflection effects. At least one exemplary embodiment includes a mirror, two beam splitters, three re... | 09/30/2008 |
| 7428104 | Optical device for the combination of light beams An optical device for combining a first light beam and at least one second light beam includes a first beam splitting device, a second beam splitting device and a position detector. The first beam splitting device splits a first reference beam from the first light b... | 09/23/2008 |
| 7411734 | Color-splitting optical element and an optical system utilizing the color-splitting optical element A color-splitting optical element is disclosed that includes a first prism having a first transmissive curved outer side, a second transmissive curved outer side and an inner side. The color-splitting optical element also includes a second prism having a first trans... | 08/12/2008 |
| 7403320 | 2-channel display system comprising micro electro mechanical systems The two channel stereo display system with micro electromechanical systems (MEMS, e.g. DMDs from Texas Instruments) simultaneously generates a right and a left image in two discrete modulation channels, which differ by the polarization of their light beams. More spe... | 07/22/2008 |
| 7401925 | Image projection system An image projector system includes an LED controller and first and second LEDs, a dichroic mirror. The LED controller controls the first and the second LED to emit first and second color lights, respectively. The second color light is of high luminance and is decomp... | 07/22/2008 |
| 7400452 | Method and apparatus for internal frames to improve performance and manufacturability of optical devices including liquid crystal on silicon (LCOS) based kernels Frames are used to hold and/or position components in precise positions in a prism assembly. The frames may be constructed using any of side caps, air gaps, recesses, and hold either a single or multiple planar components. The frames are, for example, immersed in li... | 07/15/2008 |
| 7390094 | Method and apparatus to achieve a neutral dark state in image projection systems An absorptive layer is added to an image display system. The absorptive layer is selected to compensate for tint in a black state of a displayed image. In a Liquid Crystal On Silicon (LCOS) based light engine, blue wavelengths may cause a predominate tint in black p... | 06/24/2008 |
| 7387391 | Apparatus and method for mounting imagers on stress-sensitive polarizing beam splitters An optical device that includes an optical element, an imager, and a prism bracket. The optical element includes an optical element having first and second prisms coupled together. The imager is arranged adjacent to the first prism and configured to receive light fr... | 06/17/2008 |
| 7369318 | Color display device having single illuminating system A display device is disclosed herein. The display device includes a condenser unit, an illumination lens system, an optical modulation system, a filter system and a projection system. The condenser unit converges polarized light output from a plurality of light sour... | 05/06/2008 |
| 7364302 | Projection display system using multiple light sources and polarizing element for using with same An image projection system has two illumination beams of different colors. A first polarizing beamsplitter (PBS) has first and second input faces. Light of the first color is incident on the first input face and the light of the second color is incident on second in... | 04/29/2008 |
| 7360899 | Beamsplitting structures and methods in optical systems Various embodiments involving structures and methods for illumination can be employed, for example, in projectors, head-mounted displays, helmet-mounted displays, back projection TVs, flat panel displays as well as other optical systems. Certain embodiments may incl... | 04/22/2008 |
| 7357511 | Stress birefringence compensation in polarizing beamsplitters and systems using same Some projection systems use a polarization beamsplitter (PBS) for coupling light to and from an image-forming device. The PBS is typically formed with a reflective polarizing layer disposed between glass covers. Stress birefringence in the glass cover lying between ... | 04/15/2008 |
| 7354179 | Prism set and light emitting apparatus using the same A prism unit includes a first prism having a first incident face and a first refraction face that is adjacent to and that cooperates with the first incident face to define a first angle ranging 50° to 70°, a second prism having a second incident face that is gener... | 04/08/2008 |
| 7355797 | Color display device using separate diffracted light and illumination light A display device is disclosed. The display device includes a condenser unit, an illumination lens system, a plurality of diffractive light modulators, a mirror for separating illumination light from diffracted light, a polarized beam separator, a filter unit and a p... | 04/08/2008 |
| 7350928 | Projection display system A projection display system comprises an illumination device, a prism assembly, a projection lens and a reflective light valve. The prism assembly has a first light incident surface, a first light emitting surface and a second light emitting surface. The first light... | 04/01/2008 |
| 7352513 | Prism assemblies and kernel configurations for use in projection systems Kernels are designed in different configurations based on design properties of an enclosure or other requirements. A prism assembly having various types of filters, waveplates, beam splitters (e.g., path length matched beam splitters) and/or other optical components... | 04/01/2008 |
| 7352791 | Optical systems including wavefront correcting optical surfaces The present invention relates to optical systems, beam expanding assemblies, line narrowing modules, and lasers having refractive optical elements with wavefront correcting optical surfaces. The present invention enables the skilled artisan to provide optical system... | 04/01/2008 |
| 7348949 | Method and apparatus for controlling an LED based light system A technique for controlling a Light Emitting Diode (LED) based light system involves driving individual light sources that make up the LED-based light system at non-overlapping intervals so that light source-specific feedback signals can be generated in response to ... | 03/25/2008 |
| 7344254 | Projection system with a common light source sharing system A projection display with a common light source sharing system for improved illumination uniformity is described. The common light source is coupled through a light-dividing prism to multiple integrators. Each integrator is coupled to one or more imaging devices tha... | 03/18/2008 |
| 7330315 | Light-redirecting optical structures A plurality of microstructures is provided, with each microstructure having at least a first side and at least a second side terminating at a peak. At least some of the peaks can include an elevated portion to space the peaks away from adjacent optical sheets, surfa... | 02/12/2008 |
| 7322703 | Light emitting apparatus and projector An light emitting apparatus which illuminates an illumination area has a first light source which emits a first light, a second light source which emits a second light, a wheel which is provided with a transmission filter area which transmits the first light, and a ... | 01/29/2008 |
| 7320521 | Optical engine architectures An optical engine architecture that operates as either a two-imager or a three-imager optical engine. The optical engine uses a first PBS cube and a second PBS cube having an optical axis between them. In between the first PBS cube and second PBS cube are two quarte... | 01/22/2008 |
| 7316484 | Illuminator and projection image display employing it An illuminator comprising two light source sections (101, 102), a rod integrator (1), and a relay lens system (4) for introducing a light flux emitted from the rod integrator (1), wherein the rod integrator (1) is a columnar optica... | 01/08/2008 |
| 7313309 | Optical device and color display unit using the optical device Optical device and color display unit to correct an angle of visibility, emphasize front brightness or diffusion degree, improve brightness and the performance of angle of visibility, and moreover improve the performance of chromaticity. An optical device is a film-... | 12/25/2007 |
| 7312913 | Imaging light source with polarization and color recovery The present invention provides a polarized colored light source for a display system in which light of other polarization states and colors are recycled. The color can be scrolled synchronously with a display. In one embodiment, the invention includes a tunnel havin... | 12/25/2007 |
| 7300157 | Pixel-shifting projection lens assembly to provide optical interlacing for increased addressability A projection display system includes a projection lens assembly that has multiple projection lens elements that are configured to receive light imparted with display information by a pixelated display device. The projection lens elements project the light toward a d... | 11/27/2007 |
| 7300162 | Projection display In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimi... | 11/27/2007 |
| 7289218 | Optical component for directing electromagnetic radiation A passive optical component directs first electromagnetic radiation incident on the component in a first direction and second electromagnetic radiation incident on the component in a second direction to a mutual direction. The optical component comprises an interact... | 10/30/2007 |
| 7281807 | Positionable projection display devices Described herein are devices that provide projection-type video output in a portable and flexible design. The design includes a projection chamber, a base, and an interface that permits relative positioning between the projection chamber and base. The base maintains... | 10/16/2007 |
| 7280281 | Method and apparatus for increasing microdisplay black state in light management systems and flexibility to utilize polarized or unpolarized input light A dichroic is positioned to separate color beams of polarized input light. The color beams are directed to microdisplays that contain correspondingly colored content in a kernel of a Light Management System (LMS). Adjustment of a voltage amplitude of the microdispla... | 10/09/2007 |
| 7267445 | Combiner, optical combiner module and digital light projection system using the same A projection system includes a light source, a beam splitter module, a projection lens, and an optical combiner module includes at least one light valve for forming the image. A light beam emitted from the light source is split by the beam splitter module into three... | 09/11/2007 |
| 7248244 | Color display device emitting each color light for different time period A display device includes a light source that emits a plurality of color lights, and a liquid crystal panel that controls transmission or reflection of the color light from the light source. One field is divided into a plurality of subfields: fr, fg and fb. A specif... | 07/24/2007 |
