| Patent application number | Description | Published |
|---|
| 20080198334 | Image Projector - An image projector realizing image projection with high image quality by reducing speckle noise. An image projector comprising a coherent light source, a collimation lens for transforming coherent light emitted from the coherent light source into coherent parallel light, and a projection optical system for projecting coherent parallel light is further provided with a reflection element for reflecting the coherent parallel light and capable of oscillating in parallel with the direction normal to the reflection plane, and a reflection element drive means for causing oscillatory motion of the reflection element. | 08-21-2008 |
| 20080225360 | HOLOGRAM RECORDING/REPRODUCING APPARATUS - A hologram recording/reproducing apparatus includes: a coherent light source; a spatial light modulator which spatially modulates light from the coherent light source; a Fourier transform lens which concentrates light modulated by the spatial light modulator upon a hologram medium; and a two-dimensional light-receiving element array which receives light from the hologram medium. The spatial light modulator is divided into a reference light area and a signal light area, and the divergence angle of reference light emitted from the reference light area is wider than the divergence angle of signal light emitted from the signal light area. | 09-18-2008 |
| 20080225361 | Light Source Device, and Two-Dimensional Image Display Device - There is provided a light source device which can miniaturize a two-dimensional image display device as small as possible. The light source device is provided with three coherent light sources ( | 09-18-2008 |
| 20080232412 | Surface-Emitting Laser and Laser Projector - A surface emitting laser ( | 09-25-2008 |
| 20080273123 | Laser Picture Formation Device - In a laser picture formation device which forms a vide image by irradiating lights emitted from plural laser light sources ( | 11-06-2008 |
| 20080316590 | SHORT WAVELENGTH LIGHT SOURCE - A short wavelength light source is provided with a fundamental wave light source for generating a fundamental wave, and a plurality of wavelength conversion elements made of nonlinear optical crystals having periodic polarization-inversion structures and adapted to convert a part of the fundamental wave into a second harmonic, and the nonlinear optical crystals of the plurality of wavelength conversion elements are different in material or composition. By converting the fundamental wave from the fundamental wave light source by the plurality of wavelength conversion elements, the generation of a thermal lens effect caused by light absorption can be suppressed to improve a high output resistance. | 12-25-2008 |
| 20090027587 | PLANAR LIGHTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - An optical fiber | 01-29-2009 |
| 20090046336 | HOLOGRAM MULTIPLEX RECORDING AND METHOD, AND HOLOGRAM REPRODUCING DEVICE AND METHOD - A multiplexed holographic recording apparatus of the present invention records multiplexed holograms in a plurality of recording regions that are formed on a holographic recording medium. In particular, the apparatus first records a predetermined number of multiplexed holograms in each of the recording regions formed in a predetermined range or an overall range of the holographic recording medium through holographic recording performed N times, and then performs the (N+1)th holographic recording in each recording region formed in the predetermined range or the overall range. When n other recording regions (where n=0, 1, 2, . . . ) are superimposed on each recording region formed on the holographic recording medium, a difference in the degree of multiplexing between the recording regions formed in the predetermined range or the overall range of the holographic recording medium does not exceed a predetermined value of n+1. | 02-19-2009 |
| 20090051827 | DISPLAY DEVICE - A display device ( | 02-26-2009 |
| 20090080466 | COHERENT LIGHT SOURCE AND RECORDING AND REPRODUCTION DEVICE USING THE SAME - For performing hologram recording or reproduction, an oscillation wavelength half value width Δλ of a coherent light source | 03-26-2009 |
| 20090103176 | Laser Image Display Device and Laser Image Display Screen - A laser image display device and a laser image display screen used for the laser image display device. The laser image display device is provided with a laser light source for emitting laser beams and a laser image display screen ( | 04-23-2009 |
| 20090135376 | LIGHTING APPARATUS, DISPLAY APPARATUS, PROJECTION DISPLAY APPARATUS, LIGHTING METHOD, IMAGE DISPLAY METHOD AND IMAGE PROJECTION METHOD - Red light emitted from a red laser light source, green light emitted from a green laser light source and blue light emitted from a blue laser light source are incident on a first disc body of a color wheel, are transmitted or reflected in conformity with the colors of the lights in wavelength selecting regions of a second disc body every time the color wheel performs a predetermined rotation. AS being reflected by the first disc body, the lights are divided into different positions to be emitted from the color wheel and irradiated to irradiation regions successively switched by an upward or downward reciprocal movement of a mirror group. | 05-28-2009 |
| 20090195707 | LASER PICTURE FORMATION DEVICE AND COLOR PICTURE FORMATION METHOD - The laser picture formation device includes a two-dimensional modulation element performing video image modulation as well as four or more laser light sources having different center wavelengths. The video images which have no speckle noises at the wavelength region that has high visibility, which are realized by simultaneously emitting the laser lights of green (G) and yellowish green (Y) which have particularly high visibility, and video images which are vivid as cannot be represented by the conventional display, and which can be realized by controlling the laser lights of respective colors independently, can be displayed. Particularly, by modulating the two-dimensional modulation element and the laser light output with synchronized with each other, various video displays are enabled. | 08-06-2009 |
| 20090244405 | LASER PROJECTION DEVICE AND LIQUID CRYSTAL DISPLAY TELEVISION - Disclosed herein is a laser projection device which can keep the colors of red, blue, and green laser beams constant even in high ambient temperature. The laser projection device includes a red laser light source which emits a red laser beam, a temperature sensor for detecting the temperature of the red laser light source, and a radiating unit for radiating heat from the red laser light source to the outside based on the temperature of the red laser light source detected by the temperature sensor. | 10-01-2009 |
| 20090262262 | 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/mm | 10-22-2009 |
| 20090274182 | LIGHT SOURCE, LIGHT SOURCE DEVICE, LASER IMAGE FORMING DEVICE AND INTEGRATED CIRCUIT - The light sources ( | 11-05-2009 |
| 20090290202 | HOLOGRAM RECORDING MEDIUM AND HOLOGRAM RECORDING/REPRODUCTION DEVICE - A hologram recording medium has a substrate and a hologram recording layer into or from which information is recorded or reproduced by a hologram, and a concavo-convex pattern having a reflection layer that transmits hologram recording/reproducing light and reflects light having a longer wavelength than the hologram recording/reproducing light is formed inside the hologram recording medium. | 11-26-2009 |
| 20090303417 | SURFACE ILLUMINATOR AND LIQUID CRYSTAL DISPLAY USING SAME - The present invention provides a surface illuminator having a uniform luminance over a large area by using a laser light source, having a wide color reproduction range, and capable of suppressing a speckle noise, as well as a liquid crystal display using the same. The surface illuminator of the present invention includes the laser light source that emits a laser beam; a beam scan section that deflects and scans the laser beam; and a first plate-shaped light guide that makes the laser beam deflected and scanned by the beam scan section to be incident from an end face portion and making the incident laser beam to emit from a first major surface. Further, the liquid crystal display of the present invention includes a liquid crystal display panel and the surface illuminator, wherein the surface illuminator is used as a backlight illuminator that lights the liquid crystal display panel from backside in this liquid crystal display. | 12-10-2009 |
| 20090303856 | OPTICAL STORAGE MEDIUM AND OPTICAL INFORMATION APPARATUS - Disclosed is an arrangement that enables to keep a relative positional relation between a beam for servo control and a beam for information recording/reproduction constant concerning focusing control and tracking control, even if the two beams are different from each other. An optical storage medium has a reflection surface for reflecting a first beam having a first wavelength, and reflecting a second beam having a second wavelength different from the first wavelength; and an information storage layer for recording information as an interference pattern by incidence of the first beam, or reproducing the information from a wave surface based on the interference pattern. The reflection surface is formed with plural marks or guide grooves usable in a tracking operation or a focusing operation by irradiation of the second beam. The information storage layer is partially formed, in advance, with a reference interference pattern which is reproduced when the first beam is irradiated, and which is used as a reference for correcting the relative positional relation between the first beam and the second beam. | 12-10-2009 |
| 20090316115 | IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY METHOD - An image display apparatus and an image display method, by which a desired image formation state on a retina can be constantly maintained, are provided. Thus, the image display apparatus of the present invention includes a laser light source for emitting laser light; a focus position adjustment section for adjusting a focus position, of the laser light by adjusting a spread angle of the laser light emitted by the laser light source; a scanning section for scanning a predetermined to-be-scanned area by using the laser light adjusted by the focus position adjustment section as scanning light; a light deflection section disposed at the predetermined to-be-scanned area for leading the scanning light to a cornea of the user; a light detection section disposed at a position where the light detection section has an optically conjugate relation with a surface of the cornea through the light deflection section, for detecting a part the scanning light reflected on the surface of the cornea and generating a detection signal; and a control section for controlling the laser light source, the focus position adjustment section, and the scanning section, The control section controls the focus position adjustment section to adjust the focus position of the laser light such that the detection signal generated by the light detection section agrees with an initial setting signal that is set in advance by the light detection section during an initial setting operation. | 12-24-2009 |
| 20090323026 | LASER IMAGE DISPLAY DEVICE AND COLOR IMAGE DISPLAY METHOD - A laser image display device includes: a first laser light source capable of outputting a laser light having a first wavelength; a second laser light source capable of outputting a laser light having a second wavelength; and a color output conversion controller capable of individually controlling power of the first and the second laser light source displaying the pixels constituting an image according to an input signal. When an input signal is contained at the end point of the color reproducible region and the laser light having the first wavelength is driven substantially by a first maximum power while the laser light having the second wavelength is driven substantially by a second minimum power, the color output conversion controller displays in pixels, a color contained in the color reproducible region excluding the end point in the pixels by using the laser light of the first wavelength at a first power below the first maximum power and the laser light of the second wavelength at a second power above the second minimum power. | 12-31-2009 |
| 20100020291 | 2-DIMENSIONAL IMAGE DISPLAY DEVICE, ILLUMINATION LIGHT SOURCE AND EXPOSURE ILLUMINATION DEVICE - A 2-dimensional beam scan unit ( | 01-28-2010 |
| 20100033508 | LASER EMISSION DEVICE AND IMAGE DISPLAY DEVICE USING THE SAME - A laser emission device which can emit a high-luminance and high-monochromaticity light with a high efficiency, a low power consumption, and a long lifetime, and a image display device using the laser emission device are provided. | 02-11-2010 |
| 20100053565 | LASER ILLUMINATING DEVICE AND IMAGE DISPLAY DEVICE - An object of the invention is to provide a laser illuminating device and an image display device that enable to remove speckle noises in a diffraction field and an image field, uniformly illuminate an illumination plane, and realize miniaturization. A laser illuminating device | 03-04-2010 |
| 20100060551 | BEAM SCANNING-TYPE DISPLAY DEVICE, METHOD, PROGRAM AND INTEGRATED CIRCUIT - A beam scanning-type display device used as a head-mounted display (HMD) or a head-up display (HUD) includes a light source ( | 03-11-2010 |
| 20100097580 | DISPLAY APPARATUS - A display apparatus that displays an image on a retina of a user, the display apparatus comprising: an image output unit ( | 04-22-2010 |
| 20100097674 | LIGHT SOURCE DEVICE, AND TWO-DIMENSIONAL IMAGE DISPLAY DEVICE - There is provided a light source device which can miniaturize a two-dimensional image display device as small as possible. The light source device is provided with three coherent light sources ( | 04-22-2010 |
| 20100164919 | LIQUID CRYSTAL DISPLAY DEVICE - Disclosed is a liquid crystal display device capable of performing image display with more adequate white level, during an operation of displaying an image which requires emphasizing white. A backlight illuminator for illuminating a liquid crystal display panel comprises a white light source adapted to generate white light, in addition to a laser source adapted to generate red light, blue light and green light. When an image to be displayed on a liquid crystal display panel requires emphasizing white, white light from the white light source is emitted to a liquid crystal display panel, in addition to red light, blue light and green light from the laser source. This makes it possible to display the image which requires emphasizing white, in the form of an image with more natural image quality. | 07-01-2010 |
| 20100165013 | LIQUID CRYSTAL DISPLAY DEVICE - Disclosed is a liquid crystal display device, which is capable of reducing a required response speed and increasing a pixel aperture ratio, as compared with a field sequential driving scheme. A unit pixel of a liquid crystal display panel is made up of a first sub-pixel adapted to allow only any two of red, green and blue lights to pass therethrough, and a second sub-pixel adapted to allow only a remaining one of the red, green and blue lights to pass therethrough, wherein one frame of image is time-divided into n pieces (wherein n is an integer of two or more), and respective image information about the two lights are applied to the first sub-pixel during every duration of the 1/n frame, while applying image information about the remaining one light to the second sub-pixel during a duration of the one frame of image. Further, the respective two lights are emitted during every duration of the 1/n frame in synchronization with applying the respective image information about the two lights, while continuously emitting the remaining one light during the duration of the one frame of image. | 07-01-2010 |
| 20100165307 | LASER IMAGE DISPLAY, AND OPTICAL INTEGRATOR AND LASER LIGHT SOURCE PACKAGE USED IN SUCH LASER IMAGE DISPLAY - A laser image display comprising a laser light source emitting laser light, a beam deflector element for receiving laser light and deflecting its advancing direction, a beam deflecting element control section for controlling the degree of deflection performed by the beam deflector element, an optical integrator for receiving and guiding the deflected laser light to output from its outputting end face, a pseudo surface light source element for scattering the deflected laser light, and a modulation element for receiving and modulating the laser light scattered by the false surface light source element. | 07-01-2010 |
| 20100188721 | TWO-DIMENSIONAL ENCODER, HOLOGRAPHIC MEMORY DEVICE AND HOLOGRAPHIC MEMORY MEDIUM - A two-dimensional encoder stores data on a holographic memory. The encoder encodes data of k bits (where k is an integer and k≧3) into n pixels arranged two-dimensionally (where n is an integer and n≧6). The encoder includes a first processing section | 07-29-2010 |
| 20100214208 | PLANAR LIGHTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A planar lighting device that applies light having high luminance with good monochromatic characteristics, and a liquid crystal display device using the same are provided. The planar lighting device ( | 08-26-2010 |
| 20100220261 | PLANAR LIGHTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE USING SAME - The present invention provides a planar lighting device ( | 09-02-2010 |
| 20100231861 | IMAGE DISPLAY APPARATUS - An image display apparatus is provided with a laser light source, a spatial light modulation device for modulating the laser light emitted from the laser light source, a display surface for displaying the modulated light, an optical pixel aperture enlarging member for distributing the luminance of the laser light while introducing the laser light to apertures of pixels of the spatial light modulation device; and a display pixel aperture enlarging portion for optically enlarging the modulated light by the apertures of the pixels of the spatial light modulation device corresponding to pixels of an image to be displayed on the display surface. The luminance of a partial area of each pixel of the image displayed on the display surface is controlled to be below the threefold of an average value of the luminance in the area of the entire pixel by the optical pixel aperture enlarging member and the display pixel aperture enlarging portion, thereby accomplishing speckle noise reduction and an improvement of light utilization efficiency. | 09-16-2010 |
| 20100231862 | PROJECTION TYPE DISPLAY DEVICE AND LIGHT SOURCE DEVICE - Miniaturization is realized and high-output lights are obtained by optimizing the arrangement of a laser light source unit and a homogenizer. | 09-16-2010 |
| 20110080927 | LIGHT SOURCE, LIGHT SOURCE DEVICE, LASER IMAGE FORMING DEVICE AND INTEGRATED CIRCUIT - The light sources according to the present invention include a laser oscillator including a semiconductor laser, a drive circuit for the semiconductor laser, an ACC circuit, an APC circuit, and a switch, and a starting drive current storage device, and is controlled in such a manner that the driving current at the start of the laser driving be always constant, and after the start of the lighting, it is switched to the APC operation to carry out the power control of the laser light output. | 04-07-2011 |
| 20110102874 | BEAM SCANNING DISPLAY APPARATUS - A scanning type image display apparatus includes a light source unit for emitting a laser beam, a scanning mirror for scanning the laser beam two-dimensionally in a first direction and a second direction that intersects the first direction, and a control unit for controlling driving of the scanning mirror. The control unit drives the scanning mirror such that a scanning frequency in the first direction is higher than a scanning frequency in the second direction, and varies a scanning amplitude in the first direction by varying the scanning frequency in the first direction in synchronization with a period of the scanning frequency in the second direction. | 05-05-2011 |
