Patent application number | Description | Published |
20090021959 | SURFACE EMITTING APPARATUS AND IMAGE DISPLAY APPARATUS USING THE SURFACE EMITTING APPARATUS - A surface emitting apparatus and image display apparatus using this surface emitting apparatus that enables improved luminance uniformity and smaller apparatus sizes. The surface emitting apparatus has a light source section that emits light, a light guide plate that guides light incident from an inlet face such that the light is emitted from a surface of an outlet face and a scanning section that scans the light emitted from the light source section on the inlet face of the light guide plate. The image display apparatus has the surface emitting apparatus and a display panel that is arranged on a side of the outlet face of the light guide plate. | 01-22-2009 |
20090090847 | OPTICAL SEMICONDUCTOR DEVICE AND INFRARED DATA COMMUNICATION APPARATUS - An optical semiconductor device converts a light signal into an electric signal and amplifies the converted electric signal, and includes: a photodiode which converts a light signal into a current signal; another photodiode which converts a light signal into a current signal; a current amplifying circuit which includes an operational amplifier which amplifies an output current from the photodiode; and a current-voltage conversion circuit which converts an output current from the other photodiode into a voltage, wherein an output terminal of the current amplifying circuit is connected to an input terminal of the current-voltage conversion circuit. | 04-09-2009 |
20090207342 | PLANAR LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - Provided is a planar light source device ( | 08-20-2009 |
20090284685 | LIQUID CRYSTAL DISPLAY MODULE, WAVELENGTH DISPERSIVE DIFFUSION SHEET AND LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display module is provided to reduce a color shift. The liquid crystal display module is comprised of a liquid crystal panel in which the transmittance for incident illumination light has wavelength dependency that is different in both an incident angle and a wavelength, a light source for illuminating the liquid crystal panel from its back surface, and a wavelength dispersive diffusion sheet set between the liquid crystal panel and the light source, wherein the wavelength dispersive diffusion sheet has a characteristic to ease wavelength dependency of the liquid crystal panel. | 11-19-2009 |
20090310062 | LINEAR LIGHT SOURCE DEVICE, PLANAR LIGHT EMITTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - To provide a linear light source device ( | 12-17-2009 |
20100149457 | LIQUID CRYSTAL DISPLAY MODULE, LIQUID CRYSTAL DISPLAY AND ITS ILLUMINATOR - A liquid crystal display module in which its color shift is reduced. The liquid crystal display module comprises a liquid crystal panel having such wavelength dependency that the transmittance to incident illumination light is different depending on both the incident angle and the wavelength of the illumination light and its anisotropy is different in the lateral direction and the vertical direction, and a plurality of single color light sources having different light distribution characteristics of emission wavelength and illuminating the liquid crystal panel from the back, wherein the plurality of single color light sources emit illumination light having light distribution characteristics for relaxing the wavelength dependency and the anisotropy. | 06-17-2010 |
20100254145 | LIGHTING DEVICE - A lighting device includes a substrate, a LED element, and a lens. A light exit surface of the lens includes a first light exit surface and a second light exit surface. A curve obtained by cutting the light exit surface by a plane including the optical axis has, on a boundary between the first light exit surface and the second light exit surface, a change point at which a rate of inclination decreases discontinuously. An angle between the optical axis and a line segment connecting the change point and a light emission center of the LED element is approximately equal to an emission angle with the highest light intensity, among emission angles, when light rays emitted from the light exit surface are sorted by respective emission angles. | 10-07-2010 |
20100259706 | LIGHT-EMITTING DEVICE, SURFACE LIGHT-EMITTING APPARATUS, DISPLAY SYSTEM - A light-emitting device includes a light-emitting element | 10-14-2010 |
20110037740 | PLANAR ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY - A planar illumination device ( | 02-17-2011 |
20110188123 | ANTIREFLECTION STRUCTURE AND OPTICAL DEVICE INCLUDING THE SAME - A diffusing plate is formed so as to have a surface having a larger surface roughness than a predetermined wavelength and having an aperiodic roughness shape. A plurality of fine concave/convex portions are formed on the surface so as to be arranged within a cycle equal to and smaller than a predetermined wavelength. | 08-04-2011 |
20110188366 | AMPLIFIER CIRCUIT AND OPTICAL PICKUP DEVICE - An amplifier circuit and an optical pickup device supporting multi-layered optical discs and hi-speed play mode. The amplifier circuit includes photodiodes | 08-04-2011 |
20110299169 | ANTIREFLECTION STRUCTURE AND OPTICAL DEVICE INCLUDING THE SAME - A diffusing plate has a surface including a plurality of fine concave/convex portions regularly arranged within a cycle equal to or smaller than a predetermined wavelength. The surface has a larger surface roughness than the predetermined wavelength. An average value for an angle between a normal vector of the tangent plane of a roughness shape of the surface and a normal vector of a reference plane of the surface is 5 degrees or more. | 12-08-2011 |
20120013648 | PLANAR ILLUMINATION DEVICE AND IMAGE DISPLAY APPARATUS - A planar illumination device ( | 01-19-2012 |
20130002983 | Backlight Device, Liquid Crystal Display Apparatus, and Lens - Provided is a backlight device having: a light source element having LEDs and a lens expanding light from the LEDs; a housing containing the element; a diffuser plate covering an opening portion of the housing; and a reflection sheet reflecting light emitted from the element, toward the diffuser plate. The LEDs are arranged in one or more rows, at a central zone. The lens has an incident surface receiving light from the LEDs, and an exit surface from which the light goes out, being expanded. In the exit surface, in an optical-axis-containing sectional plane viewed laterally along the orientation in which the LEDs are arrayed, the len's curvature C in a minute interval along the exit surface is maximum in a range 60°<θ | 01-03-2013 |
20130010230 | Backlight Device and Liquid Crystal Display Apparatus - Provided is a backlight device having: a light source element having LEDs and a lens expanding light from the LEDs; a housing containing the light source element; a diffuser plate covering an opening portion of the housing; and a reflection sheet reflecting light emitted from the light source element, toward the diffuser plate. The LEDs are arranged in one or more rows, at a central zone. The lens has an incident surface receiving light from the LEDs, and an exit surface from which the light goes out, being expanded. The reflection sheet is configured such that the angle between the optical axis of the lens of the light source element, and a line connecting a light emitting surface of each LED of the light source element and an end portion of the backlight device on the long side thereof is within a range of 60°≦θm≦80°. | 01-10-2013 |
20130010231 | Backlight Device and Liquid Crystal Display Apparatus - Provided is a backlight device having: a light source element having light emitting diodes and a lens expanding light from the light emitting diodes; a housing containing the light source element; a diffuser plate covering an opening portion of the housing; and a reflection sheet reflecting light emitted from the light source element, toward the diffuser plate. In the light source element, a plurality of the lenses are arranged at a central zone, the plurality of lenses being arranged in a plurality of rows. | 01-10-2013 |
20130010457 | Backlight Device and Liquid Crystal Display Apparatus - Provided is a backlight device having: a light source element having light emitting diodes and a lens expanding light from the light emitting diodes; a housing containing the light source element; a diffuser plate covering an opening portion of the housing; and a reflection sheet reflecting light emitted from the light source element, toward the diffuser plate. In the light source element, the plurality of light emitting diodes and a plurality of the lenses are arranged at a central zone. The luminance distribution of a portion corresponding to the light source element as seen from the diffuser plate has a central region indicating a peak value of luminance, attenuation regions in which luminance gradually attenuates from the central region toward a right end and a left end, and end regions that include a distribution portion in which luminance does not attenuate. | 01-10-2013 |
20130201425 | BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY APPARATUS - Provided is a backlight device having: a light source element having LEDs and a lens expanding light from the LEDs; a housing containing the element; a diffuser plate covering an opening portion of the housing; and a reflection sheet reflecting light emitted from the element, toward the diffuser plate. The LEDs are arranged in one or more rows, at a central zone. The lens has an incident surface receiving light from the LEDs, and an exit surface from which the light goes out, being expanded. A plurality of the lenses are provided such that the arrangement intervals of the individual lenses at a center and edge regions of the light source element are narrow and dense, and the arrangement intervals of the individual lenses at intervening regions between the center and the edge regions are wide in comparison with those at the center and the edge regions. | 08-08-2013 |
20130201426 | BACKLIGHT DEVICE, LIQUID CRYSTAL DISPLAY APPARATUS, AND LENS - Provided is a backlight device having: a light source element having LEDs and a lens expanding light from the LEDs; a housing containing the element; a diffuser plate covering an opening portion of the housing; and a reflection sheet reflecting light emitted from the element, toward the diffuser plate. The LEDs are arranged in one or more rows, at a central zone. The lens has an incident surface receiving light from the LEDs, and an exit surface from which the light goes out, being expanded. The incident surface is a continuous concave surface, and the projected shape thereof as seen from an upper surface of the lens is an ellipse centered on an optical axis of the lens. | 08-08-2013 |
20130255211 | Ceramic Filter and Method for Manufacturing the Same - [Problem] To provide a filter whose initial collection efficiency can be increased and whose pressure loss increase can be suppressed. | 10-03-2013 |
20140028743 | DISPLAY DEVICE AND DISPLAY CONTROL SYSTEM - A display device | 01-30-2014 |
20140093708 | OPTICAL FILM, DISPLAY PANEL, AND DISPLAY DEVICE - An optical film | 04-03-2014 |
20140177217 | LED ILLUMINATION DEVICE AND LED LIGHT-EMISSION MODULE - An illumination device and a light-emission module suppressing a change in color temperature when light emitted from a light-emission unit passes through an optical member. The illumination device has a lighting apparatus that includes: a first light-emission part emitting light of a daylight color temperature; a second light-emission part emitting light of an incandescent lamp color temperature; and the optical member, which is disposed on an optical path of the light emitted from the light-emission parts. A correlated color temperature of the light emitted from the second light-emission part is set to 2238 K. Due to this, in a spectrum of the light emitted from the second light-emission part, a maximum intensity within a wavelength range from 400 nm to 500 nm is no greater than one-tenth of a maximum intensity within a wavelength range from 300 nm to 800 nm. | 06-26-2014 |
20150020490 | CERAMIC FILTER - A ceramic filter includes a porous ceramic body which is a sintered body of ceramic particles, and a coating portion formed on a surface of each ceramic particle to support the catalyst. The porous ceramic body has a specific surface area equal to or greater than 0.5 m | 01-22-2015 |
20150070328 | DISPLAY DEVICE AND DISPLAY CONTROL SYSTEM - The display device includes: a display panel; and a surface light source section. A transmittance of light transmitted from a front surface of a prism sheet of the surface light source section is lowest when an incident angle thereof is a determined angle. An angle distribution conversion sheet of the surface light source section has a conversion region that causes light incident on a front surface thereof at the determined incident angle to be emitted from a back surface thereof at an emission angle of not larger than 40° or not smaller than 60°, in a cross-sectional view in a direction perpendicular to an extension direction of prisms. When light is applied to the front surface of the angle distribution conversion sheet at the determined incident angle and in the direction in a front view, 20% or more of the light passes through the conversion region. | 03-12-2015 |