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| Number | Title | Issue Date |
| 8184375 | Wavelength separating beamsplitter A prism system is disclosed for splitting a broadband incoming light beam. In one embodiment, the broadband beam enters the prism system and is shifted laterally through a parallelogram shaped prism. The beam then encounters a first dichroic coating treated surface.... | 05/22/2012 |
| 8116007 | Optical sight for maintaining diopter adjustment An optical sight includes a main barrel unit, an objective lens unit, an ocular lens unit, and a magnification unit. The main barrel unit extends about an axis. The objective lens unit is mounted to a front end of the main barrel unit. The ocular lens unit is mounte... | 02/14/2012 |
| 8102602 | Display and method for modifying color resists of color filter A method for modifying color resists of color filter includes the steps of: providing a white light-emitting diode (WLED) emitting light having wavelength of λi and having an emission spectrum BL(λi); providing a color filter comprising a plu... | 01/24/2012 |
| 8054553 | Illumination angle control using dichroic filters A method of controlling the illumination angle onto a target, including, illuminating onto the target with light from at least two light sources of pre-selected wavelengths; wherein each point on the target is illuminated by light from the light sources with a respe... | 11/08/2011 |
| 8045273 | Light projection apparatus and light-mixing module thereof A projection apparatus includes a first, a second and a third light sources, a first reflective element, a first and a second dichroic mirrors, a light-homogenizing element, a light valve and a projection lens. The first reflective element is configured to reflect t... | 10/25/2011 |
| 8040611 | Color separation optical system and image pickup apparatus It is disclosed that a color separation optical system improves color reproducibility by obtaining a characteristic which approximates an ideal spectral characteristic in view of influence of polarization separation caused according to the magnitude of an incidence ... | 10/18/2011 |
| 7995279 | Color light combiner For combining light from different light sources that are spatially apart, an optical system comprises a prism assembly that comprises a totally-internally-surface and a dichroic filter. The totally-internally-surface and the dichroic filter are configured for refle... | 08/09/2011 |
| 7982960 | Co-package DQPSK demodulator by Michelson interferometer An interferometer includes a means for splitting, at a splitting location, an input light beam into a first beam and a second beam; and means for recombining, at a recombination location, the first beam and the second beam. The interferometer is designed such that t... | 07/19/2011 |
| 7961399 | SLM projection display with series DMD illuminator The addition of DMD illumination modulator(s) 702 in series with projection SLM(s) 706/709 to produce high-performance projection displays with improved optical efficiency, reliability, and lower maintenance requirements. This approach eliminates the v... | 06/14/2011 |
| 7948682 | Method and apparatus for combining optical information An apparatus includes first and second portions. The first portion has optics which cause first radiation within a selected waveband to travel along a path of travel and to have a selected field of view. The second portion introduces second radiation within the sele... | 05/24/2011 |
| 7940463 | Fabricating and using hidden features in an image Some implementations of the invention provide hidden static images. Some such images can only be perceived when viewed from an angle to the normal to a surface. Such images may appear as a solid color when viewed along an axis perpendicular to a surface, but may rev... | 05/10/2011 |
| 7907343 | Composite optical dividing device A composite optical dividing device can receive a light beam, which is mixed with at least multiple wavelength ranges of light. The optical dividing device includes a first optical film plate and a second optical film plate. The first optical film plate has multiple... | 03/15/2011 |
| 7864432 | Fusion night vision system A fusion night vision system having image intensification and thermal imaging capabilities includes an edge detection filter circuit to aid in acquiring and identifying targets. An outline of the thermal image is generated and combined with the image intensification... | 01/04/2011 |
| 7852565 | Color separation/combination prism and image-projection apparatus A color separation/combination prism is disclosed which has an optical film arrangement capable of performing color separation, light analysis and color combination. The prism includes four prism members and at least five optical surfaces as outer surfaces thereof. ... | 12/14/2010 |
| 7843642 | Systems and methods for providing compact illumination in head mounted displays Disclosed are systems and methods for providing illumination in a head mounted display. In one embodiment a method includes emitting light from a plurality of sources at a plurality of wavelengths and transmitting the light from the plurality of sources to a first d... | 11/30/2010 |
| 7808715 | Michelson-interferometer-based delay-line interferometers An interferometer includes a means for splitting, at a splitting location, an input light beam into a first beam and a second beam; and means for recombining, at a recombination location, the first beam and the second beam. The interferometer is designed such that t... | 10/05/2010 |
| 7796339 | Image display apparatus and projector An image display apparatus includes a light source that emits light-source light, an illumination system that makes the light-source light uniform, a color separation system that separates illumination light outputted from the illumination system into color light fl... | 09/14/2010 |
| 7777961 | Optical switch with co-axial alignment beam A method and system for creating and co-aligning a first array of optical beams with a second array of optical beams. In a preferred application the invention is used in a cross connect optical switch. A first set of alignment beams are created and added to and alig... | 08/17/2010 |
| 7746560 | Illumination optical system that uses a solid-state lighting element which generates white light, and an optical device equipped therewith An illumination optical system for use in a microscope or electronic endoscope includes a solid-state lighting element that generates light having a spectral profile with peak intensities at multiple wavelengths such that the light output by said solid-state lightin... | 06/29/2010 |
| 7697209 | Dichroic mirror A dichroic mirror includes a substrate and a dielectric multilayered film formed on a surface of the substrate. The dielectric multilayered film includes a first period layer with a structure represented by a formula (0.33H0.66L0.33H)n and a second period... | 04/13/2010 |
| 7692865 | Adapter for coupling a laser processing device to an object An adapter for coupling a laser processing device to an object, said adapter having a central region which can be moved into the beam path of the laser processing device, an illumination beam path through which illumination radiation can be guided for illumination o... | 04/06/2010 |
| 7692866 | Display systems with and methods for multiple source colour illumination A color display (100, 200) for displaying an image is described wherein the color display (100, 200) is adapted for displaying a number of basic color light channels (102a, 102b, 102c). The color display (10... | 04/06/2010 |
| 7684120 | Optical product and method of manufacturing the optical product An optical product that is a cross dichroic prism formed by putting together vertexes forming right angles of a first prism element, a second prism element, a third prism element, and a fourth prism element made of glass that have a shape of a right isosceles triang... | 03/23/2010 |
| 7636200 | Projector To provide a projector capable of increasing F number of an illumination system without enlarging the size of the illumination system or the like. A combining lens 43a operating in cooperation with a superimposing lens 35 is provided only... | 12/22/2009 |
| 7583446 | Electronic adjustable color filter device An electronically adjustable, combinational color filter device is provided for generating color light. Incoming light is split in a polarizing beam splitter/combiner into a first and a second element of light. One or more wave plates operate to modify the polarizat... | 09/01/2009 |
| 7567386 | Dichroic mirror A dichroic mirror includes a substrate and a dielectric multilayered film formed on a surface of the substrate. The dielectric multilayered film includes a first period layer with a structure represented by a formula (0.7H1.4L0.7H)n and a second period la... | 07/28/2009 |
| 7561337 | Light coupling apparatus A light coupling apparatus for use in an optical equipment is provided. The light coupling apparatus is used to couple a plurality of different incident lights from different light sources into a light that emits in a substantial single outward direction. ... | 07/14/2009 |
| 7557992 | Multi-mode color filter A multi-mode color filter 400 having an inner hub region 402 used to mount the color filter 400 to a motor shaft. A first track 404 and a second track 406 of color filter segments are formed on the color filter, as is an optional c... | 07/07/2009 |
| 7557993 | Optical pickup and optical disc device The present invention provides an optical pickup corresponding to plural kinds of optical discs which can be downsized and simplified, and can compensate the spherical aberration. Optical path separation for separating the optical path of a first and a second optica... | 07/07/2009 |
| 7535647 | Beam splitters for, for instance, high efficiency spectral imagers Optical instruments having, inter alia, optics to process wavelengths of electromagnetic radiation to produce an interferogram. The instruments include an optical path and optical elements positioned along this path for splitting and recombining the wavelengths whic... | 05/19/2009 |
| 7522343 | Michelson interferometer based delay line interferometers An interferometer includes a means for splitting, at a splitting location, an input light beam into a first beam and a second beam; and means for recombining, at a recombination location, the first beam and the second beam. The interferometer is designed such that t... | 04/21/2009 |
| 7522344 | Projection-based head-mounted display with eye-tracking capabilities Methods, systems, apparatus and devices for the lens design of an HMPD with eye-tracking capabilities. The integration uses a low-level optical configuration in order to achieve a compact, comfortable, easy-to-use system. The optical system is further designed and o... | 04/21/2009 |
| 7518802 | Illumination device, image display device, and projector An illumination device to increase or decrease a quantity of light, while maintaining a uniform illumination intensity distribution, an image display device that displays high-quality images with a wide dynamic range, and a projector are provided. The illumination d... | 04/14/2009 |
| 7511889 | Color separation/combination prism and image-projection apparatus A color separation/combination prism is disclosed which has an optical film arrangement capable of performing color separation, light analysis and color combination. The prism includes four prism members and at least five optical surfaces as outer surfaces thereof. ... | 03/31/2009 |
| 7508591 | Ultra-bright light engine for projection displays A projector incorporating a prism and a plurality of light valves for modulating light that passes though the prism, wherein the color splitting-converging prism includes a dichroic coating having multiple layers of high and low index of refraction and ¼ wavelength... | 03/24/2009 |
| 7505208 | Air-gap optical structure with a nonreflective air-gap spacer An air-gap optical structure includes a first transmissive optical element, a second transmissive optical element, and a spacer structure disposed between the first transmissive optical element and the second transmissive optical element so as to define an air gap t... | 03/17/2009 |
| 7468844 | Apparatus for adding red light to a polarized light system An apparatus for adding red light to a polarized light system includes a first light source and a second light source. A polarizing beam splitter combines S-polarized-light from the first light source and P-polarized light from the second light source. A first multi... | 12/23/2008 |
| 7466488 | Optical element producing method and optical element A producing method of an optical element such as quarter-wave plate wherein preparing a first member which has a coefficient of elasticity of 1-4 (GPa) at normal temperature, setting the temperature of a die having microscopic shape with high aspect ratio to be high... | 12/16/2008 |
| 7460306 | Multi-directional optical element and an optical system utilizing the multi-directional optical element Multi-directional optical elements are disclosed that include a body having a first side having a first curvature, a second side having a second curvature, a third side having a third curvature, and a fourth side having a fourth curvature. The second side is dispose... | 12/02/2008 |
| 7453645 | Spectral purity filter, lithographic apparatus including such a spectral purity filter, device manufacturing method, and device manufactured thereby A spectral purity filter includes an aperture, the aperture having a diameter, wherein the spectral purity filter is configured to enhance the spectral purity of a radiation beam by reflecting radiation of a first wavelength and allowing at least a portion of radiat... | 11/18/2008 |
