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| Number | Title | Issue Date |
| 7457017 | Screens to be used with a system for the magnification and projection of images in substantially three-dimensional format The three-dimensional system discloses screens (12, 16) that produce magnified three-dimensional images (6) that can be projected before large audiences who can view said images without special glasses or viewing aids. The screens disclosed therein are... | 11/25/2008 |
| 7443553 | Holographic sensors and their production An array of discrete sensors disposed on a substrate, each sensor comprising a holographic support medium and a hologram disposed throughout the volume of the medium, whereby interaction with an analyte results in a variation of a property of the medium. ... | 10/28/2008 |
| 7417618 | Lighting apparatus and projection type display, and driving method therefor A lighting apparatus used for a projection type display is provided, which can change the incident ray volume to an optical modulation device without changing the optical output intensity of the lamp, and can exhibit excellent effects in expressive power of an image... | 08/26/2008 |
| 7286272 | Image display unit The present invention relates to an image display device in which a virtual image of an image display element is formed to display an image. The image display device includes a transmission type diffraction optical element (50) for diffracting exit lights fro... | 10/23/2007 |
| 7262754 | Electronic device with liquid crystal display An electronic device, such as personal computer, incorporating a liquid crystal panel which uses LEDs as an illuminating light source for a liquid crystal panel to reduce power consumption and size of the electronic device. When 3-color LED lamps 13R, 13 | 08/28/2007 |
| 7236300 | Transmission type screen using a fly-eye lens A transmission type screen including a fly-eye lens having a convex shape on one side thereof and a light-shielding layer provided on an opposite side of a lens surface of the fly-eye lens and having a plurality of openings provided near each focus of lens unit cell... | 06/26/2007 |
| 7233446 | Transformable, applicable material and methods for using same for optical effects Optical elements and methods of forming optical elements are described. In one example, a method applies a photosensitive ink to a substrate and exposes the ink to create an optical element, such as an optical lens or holographic recording medium. ... | 06/19/2007 |
| 7154647 | Color hologram display and its fabrication process The invention relates to a color hologram display an image of a three-dimensional object and a hologram image of a pattern of plane characters, images or the like are recorded in the same volume type hologram photosensitive material in a superposed or multiplexed fa... | 12/26/2006 |
| 7154540 | System for enhancing video Pan, tilt and zoom sensors are coupled to a broadcast camera in order to determine the field of view of the broadcast camera and to make a rough estimate of a target's location in the broadcast camera's field of view. Pattern recognition techniques can be used to de... | 12/26/2006 |
| 7131737 | Housing for mounting a beamsplitter and a spatial light modulator with an output optical path A housing (500) for a wire grid polarizing beamsplitter (240) and a spatial light modulator (210) in alignment with an output optical path has a front plate having an opening (502) for admitting incident illumination and a modulator mount... | 11/07/2006 |
| 7121668 | Device and method for generating an image for projection In an image projection device, interferences between the light source and the light modulator leading to visible interferences in the projected image are suppressed by an interference cancellation circuit that pre-corrects the control signal that includes the image ... | 10/17/2006 |
| 7113706 | Systems and methods for placing line terminating equipment of optical communication systems in customer points of presence A system for delivering optical signals to and from an undersea optical cable may include a cable landing station connected to the undersea optical cable and configured to convey a wavelength division multiplexed optical signal from the undersea optical cable. The s... | 09/26/2006 |
| 7099057 | In-line holographic mask for micromachining A method of fabricating a holographic mask includes the steps of providing an illumination source and a non-opaque object mask. The source is for generating a coherent illumination beam directed along an axis. The object mask is capable of transmitting a portion of ... | 08/29/2006 |
| 7095539 | Method of forming a three-dimensional orthoscopic image from its pseudoscopic image A method of forming a three-dimensional orthoscopic image from a pseudoscopic image comprising preparing an integral photograph representing the pseudoscopic image, and reconstructing a three-dimensional image from that integral photograph. Since the reconstruction ... | 08/22/2006 |
| 7055967 | Illumination systems employing corrective optics for use in reduced étendue color video projection systems An illumination system is provided with at least a first arc lamp positioned on the first axis of a first reflecting device. An aspherical corrector plate is positioned to receive the light rays produced by the arc lamp. The aspherical corrector plate is shaped so t... | 06/06/2006 |
| 7024110 | Optical switch having an autorestoration feature for switching from a backup optical path to a primary optical path Optical switches are provided in an optical transmission system having at least two optical nodes in optical communication over a primary optical path and a backup optical path. An optical switch is located in each of the optical nodes. Each of the optical switches ... | 04/04/2006 |
| 7019798 | Display device A display device has a plurality of light emitting elements for emitting lights, a display element for modulating the light emitting from the plurality of light emitting elements so as to convert it to an image light showing an optical image, a reflection type holog... | 03/28/2006 |
| 6961045 | Pattern projection techniques for volumetric 3D displays and 2D displays This invention relates generally to image projection methods and apparatus for creating color or gray scale images using spatial light modulators (SLMs) without color or gray capability. The basic concept is to divide the pixels on a single SLM into multiple groups ... | 11/01/2005 |
| 6944362 | Optical switch having a autorestoration feature for switching from a backup optical path to a primary optical path Optical switches are provided in an optical transmission system having at least two optical nodes in optical communication over a primary optical path and a backup optical path. An optical switch is located in each of the optical nodes. Each of the optical switches ... | 09/13/2005 |
| 6937262 | Imaging device for printing form A device for recording images on a printing form (46), having at least one laser diode bar (10), which includes a number of laser diodes (12) whose image spots (56) lie disjunctly in an image field (36), and having an array (16 | 08/30/2005 |
| 6919997 | Compact device for imaging a printing form A compact device for imaging (10) a printing form (12), including a number of light sources (14) as well as imaging optics (18) for producing a number of image spots (16) of the light sources (14) on the printing form (12... | 07/19/2005 |
| 6870650 | Illumination device and method for laser projector Systems and methods for providing illumination suitable for imaging devices such as laser projection systems. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light e... | 03/22/2005 |
| 6833938 | Variable hologram element, and optical device using the same The invention relates to an optical element with variable optical properties, which ensures that the amount of light available is increased, and an optical device using the same. In a liquid crystal variable hologram element 3, polymer layers 18 and li... | 12/21/2004 |
| 6817530 | Multiple image security features for identification documents and methods of making same A method for making a secure identification document with multiple images is provided. Information is provided to an information bearing layer, the information constructed and arranged to be capable of providing multiple images when the printed information is viewed... | 11/16/2004 |
| 6808271 | Projection type display apparatus In order to achieve a great improvement in light utilizing efficiency, a projection type display apparatus for obliquely projecting an original image onto a screen includes a first projection optical system for projecting light from an original picture and forming a... | 10/26/2004 |
| 6736512 | Pixel element for a three-dimensional screen A pixel element for a 3D display, wherein multiple substantially collimated controllable light beams are emitted in multiple directions, with each light beam associated with a predetermined viewing direction. A set of substantially point type sources are individuall... | 05/18/2004 |
| 6719429 | Anamorphic illumination of micro-electromechanical display devices employed in multimedia projectors Micro-electromechanical display device (“MDD”)-based multimedia projectors (90, 120) of this invention employ an arc lamp (32), a color modulator (42), and anamorphic illumination systems (94, 121) for optimally illuminating a MDD ( | 04/13/2004 |
| 6654399 | Semiconductor light projection apparatus and distance measurement apparatus In performing an light emitting operation using a plurality of semiconductor light-emitting devices, these semiconductor light-emitting devices are lighted up such that the driving current is lessened and the life time of the devices is prevented from bei... | 11/25/2003 |
| 6619801 | Projection type image display apparatus realizing three-dimensional image A projection type image display apparatus includes a light source emitting light, a polarization device transmitting light polarized in one direction of incident light emitted from the light source, a reflection type image generating unit generating a col... | 09/16/2003 |
| 6568810 | Illumination optical system and projection display apparatus incorporating the same An illumination optical system comprises a first multi-lens array, a second multi-lens array, and a polarization conversion module. An optical modulation device of a projector is irradiated with light beams that are generated by passing incident light fro... | 05/27/2003 |
| 6396463 | Image projection apparatus There is provided an image projection apparatus which is small and in which a picture image can be stably observed while high resolution is maintained. The image projection apparatus is structured such that a beam of light from a light source passes throu... | 05/28/2002 |
| 6366369 | Transmission hologram fabrication process The invention relates to a process capable of fabricating a variety of transmission holograms having a simple structure, a wide visible range and a large area and comprising the first stage of recording the wavefront to be finally reconstructed in the for... | 04/02/2002 |
| 6330088 | Method and apparatus for recording one-step, full-color, full-parallax, holographic stereograms The present invention concerns methods and devices for creating and printing variable size and variable resolution holographic stereograms and holographic optical elements using computer rendered images of three-dimensional computer models or using comput... | 12/11/2001 |
| 6281993 | Phase shifting element for optical information processing storing systems Optical information processor and storage of pixelated data pattern in a Fourier plane of a lens as achieved by a plurality of optical elements operating with a spatial light modulator. A laser light source illuminates a data pattern with a wavefront that... | 08/28/2001 |
| 6256122 | Device for the elimination of the zero order beam emerging from a hologram illuminated in polarized light Device for elimination of the zero order beam emerging from holograms illuminated in polarized light includes a birefringent plate (5) illuminated by both said zero order beam (3) and by a diffracted beam (4) emerging from the hologram (2). The plate is a... | 07/03/2001 |
| 6043913 | Apparatus for producing dot matrix hologram An apparatus for producing a dot matrix hologram is provided, which can fabricate a hologram of high quality, simplify the construction, and reduce the cost. This apparatus includes a laser source for providing a laser beam to form interference fringes, i... | 03/28/2000 |
| 6005693 | Method for holographic storage The present invention is a method for optical data storage which compensates for deterministic variations. The method comprises writing a two-dimensional image comprising a plurality of pixels into a recording medium while varying the exposure of individu... | 12/21/1999 |
| 6002520 | Illumination system for creating a desired irradiance profile using diffractive optical elements An illumination system that comprises a light source, and, disposed in an optical path between the light source and the surface, converging imaging optics, and a diffractive array generator. The diffractive array generator preferably includes a two-dimens... | 12/14/1999 |
| 5999282 | Color filter and color image display apparatus employing the filter An improved color filter and a color image display apparatus employs the filter, the color filter has a hologram device for spectrally diffracting an incident light into plural light beams of different wavelength regions and selectively converging the plu... | 12/07/1999 |
| 5917622 | Light device with holographic optics A device for providing illumination to a specifically defined region including in combination an extended and diffuse light source and a holographic optical element mounted in spaced relation to said light source, said holographic optical element comprisi... | 06/29/1999 |
