Patent application number | Description | Published |
20080225911 | WAVELENGTH DETECTOR, WAVELENGTH STABILIZATION LASER DEVICE, AND IMAGE DISPLAY DEVICE - A wavelength detector capable of distinguishing between the changes of a transverse mode and of a longitudinal mode of a laser light and thus detecting the change of the wavelength of the laser light with high accuracy is provided. In a wavelength detector | 09-18-2008 |
20090027587 | PLANAR LIGHTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - An optical fiber | 01-29-2009 |
20090028027 | OPTICAL RECORDING MEDIUM, METHOD FOR RECORDING/REPRODUCING INFORMATION TO/FROM OPTICAL RECORDING MEDIUM AND APPARATUS FOR RECORDING/REPRODUCING INFORMATION - The present invention provides an optical information medium capable of suppressing the influence of reflection light from an unnecessary information recording face and effectively eliminating spherical aberration at the time of recording/reproducing information to/from a recording medium having a plurality of information recording faces. When reflectance of an information recording face is αh and transmittance between information recording faces is th, ah and th of the optical information medium are set so as to satisfy ((α(h−1) | 01-29-2009 |
20090066879 | LIQUID CRYSTAL DISPLAY DEVICE AND LIQUID CRYSTAL DISPLAY SYSTEM - A light source portion having laser light sources emitting red light, green light, and blue light and conventionally disposed integrally with the liquid crystal display panel is spatially separated from the liquid crystal display panel. Accordingly, the power supply, the optical system, and the heat source are incorporated into the light source portion and are thereby completely separated from the liquid crystal display panel. A laser beam emitted from the light source portion is guided to the liquid crystal display panel via a fiber. In this manner, it is possible to achieve a liquid crystal display device capable of significantly reducing the liquid crystal display panel in thickness and weight. | 03-12-2009 |
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 |
20090141496 | IMAGE DISPLAY APPARATUS - An image display apparatus includes a laser source for emitting ultraviolet or blue display-use laser light having a wavelength of 420 nm or less; and a display unit including a fluorescent light generating section for generating fluorescent light when irradiated with the display-use laser light, wherein the display unit displays an image using the fluorescent light generated by the fluorescent light generating section, wherein the display unit further includes an extraneous light shielding section for shielding an extraneous light which is emitted from a back side of the display unit and which has a wavelength in a range where the fluorescent light is generated so as to prevent the extraneous light from entering in the fluorescent light generating section. | 06-04-2009 |
20090190070 | PLANAR ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE ADOPTING THE SAME - A planar illumination device includes a laser light source; a light guide plate for guiding light entered through an end surface to be outputted from a first principal surface; an optical element which forms diffusing light outputted from the laser light source into a substantially parallel light in a thickness-wise direction of the light guide plate and which outputs the resulting parallel light to the end surface of the light guide plate; and a first light deflecting unit for deflecting a propagation direction in the light guide plate of the light incident thereon, wherein the first light deflecting unit is arranged such that a degree of deflection of the light incident on the light guide plate differs according to positions in the light guide plate, to make an amount of light outputted from the first principal surface uniform in the first principal surface. | 07-30-2009 |
20090190072 | Wavelength separator, planar illumination device and liquid crystal display device using the wavelength separator - A wavelength separator is provided with a reflective color filter arranged to intersect with an optical path of light emerging from a principal surface of a light guide plate, and a recycle portion arranged at a side of the light guide plate opposite to the reflective color filter. Out of light incident on the light guide plate, light reflected by the reflective color filter is returned to the reflected color filter again by being reflected by the recycle portion via the light guide plate. | 07-30-2009 |
20090257463 | LASER LIGHT SOURCE, IMAGE DISPLAY APPARATUS, AND PROCESSING APPARATUS - A laser light source includes a fundamental laser generator that generates a fundamental laser light, a wavelength conversion element that is made of a ferroelectric crystal with a periodically poled structure and converts the fundamental laser light to a laser light having a different wavelength, a holding member that holds at least a part of an element surface of the wavelength conversion element that crosses a polarization direction of the periodically poled structure, and an insulation layer that is provided between the holding member and the element surface. Electric resistivity of the insulation layer is 1×10 | 10-15-2009 |
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 |
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 |
20090323172 | OPTICAL APPARATUS, AND WAVELENGTH CONVERSION LASER LIGHT SOURCE, IMAGE DISPLAY APPARATUS, AND LASER LIGHT SOURCE DEVICE ADOPTING SUCH OPTICAL APPARATUS - A wavelength conversion laser light source includes: a non-linear optical crystal of an oxygen octahedral structure, having added thereto a metal ion in other components than a main component; a light source for projecting light into the non-linear optical crystal in an operation mode; and a refractive index recovery mechanism for carrying out a recovery operation for recovering a refractive index of said non-linear optical crystal as shifted overtime due to light projected into the non-linear optical crystal in the operation mode with an applied external energy into the non-linear optical crystal in a non-operation mode in which light is not injected to the non-linear optical crystal. | 12-31-2009 |
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 |
20100066649 | WAVELENGTH CONVERTING APPARATUS AND IMAGE DISPLAYING APPARATUS - A wavelength converting apparatus comprising: a laser resonator; a first wavelength converting element that converts a fundamental wave outputted from the laser resonator into a harmonic wave; a first temperature control element that controls the temperature of the first wavelength converting element; a second wavelength converting element that converts a fundamental wave outputted from the first wavelength converting element into a harmonic wave; a second temperature control element that controls the temperature of the second wavelength converting element; a first detecting portion that detects an output of a harmonic wave outputted from the first wavelength converting element; a second detecting portion that detects an output of a harmonic wave outputted from the second wavelength converting element; and a controller that manages temperature control of the first wavelength converting element by the first temperature control element, temperature control of the second wavelength converting element by the second temperature control element, and current value control of a driving current applied to the laser light source. | 03-18-2010 |
20100085631 | WAVELENGTH CONVERTER AND IMAGE DISPLAY WITH WAVELENGTH CONVERTER - Upon obtaining green light as wavelength converted light by causing infrared light to be incident on a wavelength conversion element, the absorption of the green light occurs due to the generation of ultraviolet light as sum-frequency light of the infrared light and the green light in the wavelength conversion element and the destruction of a crystal composing the wavelength conversion element occurs due to heat generated at this time. In a laser wavelength converter of the present invention, a condensed position of the infrared light in the wavelength conversion element is deviated from a position assumed to be optimal when the influence of the generated heat is ignored. Consequently, crystal destruction is suppressed, a high-efficiency wavelength conversion is enabled and high-output wavelength converted light exceeding several watts, which was difficult to attain in conventional wavelength conversion elements, is attained. | 04-08-2010 |
20100110517 | OPTICAL SCANNING DEVICE AND TWO-DIMENSIONAL IMAGE DISPLAY DEVICE USING THE SAME - An optical scanning device capable of stably and uniformly performing linear optical scanning by using a high-brightness light source is provided. The device includes: at least one laser light source ( | 05-06-2010 |
20100110533 | LASER LIGHT SOURCE, AND IMAGE DISPLAY APPARATUS AND PROCESSING APPARATUS USING THE SAME - A laser light source ( | 05-06-2010 |
20100118535 | LIGHT SOURCE DEVICE, LIGHTING DEVICE AND IMAGE DISPLAY DEVICE - A light source device is provided with a coherent light source for emitting the coherent light, and a pattern changer for changing an interference pattern of the coherent light on a surface of the illumination object. The pattern changer includes a photorefractive crystal which is arranged between the coherent light source and the illumination object and on an optical path of the coherent light and exhibits a photorefractive effect, and a changer for changing at least one of a light intensity distribution, a polarization direction, a wavelength and an intensity of coherent light incident on the photorefractive crystal. The illumination object is illuminated with the coherent light. | 05-13-2010 |
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 |
20100165452 | WAVELENGTH CONVERSION ELEMENT, LASER LIGHT SOURCE, TWO-DIMENSIONAL IMAGE DISPLAY AND LASER PROCESSING SYSTEM - A wavelength conversion element is provided with a substrate including a nonlinear optical single crystal having a periodically poled structure, the visible light transmittance of the substrate is 85% or higher when ultraviolet light is irradiated to the substrate, and laser light having an average output of 1 W or more is outputted by shortening the wavelength of laser light having a wavelength of 640 nm to 2000 nm. By improving visible light transmission characteristics when the ultraviolet light is irradiated in this way, the breakdown of crystal can be prevented and the stabilization of output characteristics at high output can be realized. As a result, the absorption of green light induced by ultraviolet light can also be suppressed, and the saturation of output and the breakdown of crystal can be avoided. | 07-01-2010 |
20100183037 | FIBER CUTTING MECHANISM AND LASER LIGHT SOURCE APPLICATION APPARATUS COMPRISING THE MECHANISM - Provided is a fiber cutting mechanism that prevents secondary utilization of a fiber laser light source incorporated in a device that uses a laser light. With a characteristic fiber cutting mechanism, when a laser device is separated from a laser light source application apparatus, at least a fiber | 07-22-2010 |
20100201894 | PROJECTOR - A projector has: light source ( | 08-12-2010 |
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 |
20100284428 | FIBER LASER LIGHT SOURCE - A fiber laser light source is provided with a laser resonator including a pair of fiber gratings optically connected to a fiber in a state that the fiber is interposed between the paired fiber gratings. The reflection center wavelength of a laser-exit side fiber grating, out of the paired fiber gratings, lies in a wavelength range where the reflectance of a fiber grating, out of the paired fiber gratings, closer to the pump laser light source is not smaller than 80% but not larger than 98%. | 11-11-2010 |
20100289986 | LIQUID CRYSTAL DISPLAY APPARATUS - A wavelength selection substrate | 11-18-2010 |
20110012986 | PRINTING APPARATUS AND PRINTING METHOD USING THE SAME - Provided is a printing apparatus for printing information on a printing area of an object to be printed by irradiating the object to be printed with a first laser beam. The printing apparatus includes a light source for outputting the first laser beam, a light collecting optical system for collecting the first laser beam to the printing area of the object to be printed, and a scanning unit for performing scanning with the first laser beam. The object to be printed contains moisture at least in the printing area, and a wavelength of the first laser beam is 350 nm or more and 550 nm or less. | 01-20-2011 |
20110043766 | INFORMATION PROCESSOR WITH PROJECTOR - There is disclosed an information processor including a housing, a projector attached to the housing, and a screen attached to the housing, wherein the projector projects light onto the screen. | 02-24-2011 |
20110058122 | SURFACE ILLUMINATION APPARATUS AND LIQUID CRYSTAL DISPLAY USING SAME - A surface illumination apparatus has: a plurality of light sources ( | 03-10-2011 |
20110228195 | LIQUID CRYSTAL DISPLAY BACKLIGHT AND LIQUID CRYSTAL DISPLAY DEVICE USING SAME - An LCD backlight ( | 09-22-2011 |