| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 385036000 | Prism | 23 |
| 20090074357 | SURFACE WARP RESISTANT OPTICAL DEVICES - In at least one example, an optical component includes a central optical surface proximate an optical axis, a peripheral portion extending radially from the central optical surface, and a stepped portion between the central optical surface and the peripheral portion. The stepped portion may be formed to raise the central optical surface above the peripheral portion. | 03-19-2009 |
| 20090154876 | WAVELENGTH DISPERSIVE DEVICE WITH TEMPERATURE COMPENSATION - The invention relates to fiber-optic wavelength dispersive devices incorporating a wavelength dispersive reflector that provides auto-compensation of variations of output spectral characteristic with temperature and includes a transmissive dispersion that is followed by a beam-folding reflecting surface in a double-pass configuration grating and is coupled to a wedged shaped prism. | 06-18-2009 |
| 20090269008 | LIGHT-DIFFUSIVE METHACRYLIC RESIN LIGHT GUIDE AND SURFACE LIGHT SOURCE DEVICE COMPRISING THE SAME - This invention provides a methyl methacrylate resin light guide for use in a surface light source device. The methyl methacrylate resin light guide can reduce the occurrence of dark lines and can improve the screen image quality of a surface light source device. The light guide characterized by including a methyl methacrylate resin and fine particles. Herein, not less than 0.01 parts by mass and not more than 0.5 parts by mass of the fine particles are dispersed in 100 parts by mass of the methyl methacrylate resin. In addition, the absolute value of a difference in refractive index between the fine resin particles and the methyl methacrylate resin is not less than 0.001 and not more than 0.02, the fine resin particles have an average particle size of not less than 1 μm and not more than 10 μm. | 10-29-2009 |
| 20090274419 | MANIFOLD-TYPE LIGHTGUIDE WITH REDUCED THICKNESS - A light guide includes a body having an elongate shape and a plurality of light-reflecting faces and light-emitting faces extending along the body. The light-reflecting faces extend in a stepped fashion along the body in the direction of a longitudinal axis of the light guide and are configured to reflect light rays by the principle of total internal reflection. Each light-emitting face is disposed along the body opposite a corresponding light-reflecting face. Each light-emitting face is configured to emit light reflected by the corresponding light-reflecting face. The light-emitting faces are also disposed on the body in a stepped fashion. Steps of the light-emitting faces correspond to steps of the light-reflecting faces. In another aspect, the light-reflecting faces are separated by stepped-down faces. The stepped-down faces are oriented at a stepped-down angle in the range of about 1 and 10 degrees with respect to the longitudinal axis of the light guide. | 11-05-2009 |
| 20100046889 | Apparatus and Method For Coupling Light to a Thin Film Optical Waveguide - An apparatus comprises an optical waveguide, a grating for coupling light into the waveguide, and an optical element for splitting a light beam into a plurality of beams that strike the grating at different angles of incidence. | 02-25-2010 |
| 20100150498 | Flat-Panel Optical Projection Apparatus - A light guide of the tapered-waveguide type includes an input slab ( | 06-17-2010 |
| 20100260455 | OPTICAL GUIDE AND OCULAR VISION OPTICAL SYSTEM - The invention relates to optical guides and more precisely to guides for conveying an image without deforming the same. These guides can particularly be used in the production of ocular-vision optical systems more currently named informative spectacles. The optical guide includes an extraction section made of reflective microstructures at the surface of the guide. The microstructures define prisms having a calculated angle in order to send back the light beam at a given angle relative to the opposite surface enabling the exit thereof from the guide. Advantageously, the cut and the arrangement of said microstructures make them invisible to the eye while generating a large and comfortable image. | 10-14-2010 |
| 20100296777 | OPTICAL ROTARY JOINT WITH ACTIVE MOVEMENT COMPENSATION - An optical rotary joint includes a first collimator arrangement for coupling on first light-waveguides, and a second collimator arrangement for coupling on second light-waveguides, with the second collimator arrangement being supported to be rotatable relative to the first collimator arrangement about a rotation axis. The collimator arrangements include collimators with an actuator that is adjustable along two axes. A control unit controls the actuators so that mechanical tolerances are compensated, and optical transmission loss between the collimator arrangements is minimal. | 11-25-2010 |
| 20100329606 | LATERAL GUIDE OPTICAL FIBER - A lateral guide optical fiber is revealed. The lateral guide optical fiber includes a transparent optical fiber body covered by a refraction layer and a reflector connected with one side of the optical fiber body. Thereby after light emitted into the optical fiber body from one end thereof, it is projected onto the refraction layer and then is refracted downward to be gathered onto the reflector. Then the light gathered is reflected by the reflector and is projected out. Thus the light intensity and uniformity of the optical fiber are increased dramatically by the light gathering and light reflection. | 12-30-2010 |
| 20110123152 | Optical Splitter Device - An optical splitter device and method are provided. The device can include a waveguide having walls forming a large hollow core. The waveguide can be configured to direct an optical signal through the large hollow core. An optical tap can be formed through at least one wall of the waveguide. In addition, a prism can be located in the large hollow core of the waveguide and aligned with the optical tap. A splitter coating can be provided on the prism to direct a portion of the optical signal outside of the waveguide through the optical tap. | 05-26-2011 |
| 20110243502 | OPTICAL MULTIPLEXER/DEMULTIPLEXER MODULE AND PRISM USING FOR THE SAME - An optical multiplexer/demultiplexer module comprises: a plurality of prisms, each having an inclined surface that is formed by one of the four orthogonal corners of a transparent rectangular solid glass plate being cut and removed at a 45° angle with respect to the end surface; a frame for housing said plurality of prisms; and a plurality of collimator units that convert light having a different wavelength for each prism to collimated light, and inputs the light to the respective prism. When light a having different wavelength is input to a respective prism, the input light is reflected two times, by the inclined surface and a second end surface, after which the light is output from the respective prism. The light that is output from a previous stage prism of the plurality of prisms advances along the same optical path as the light that is output from a later stage prism, so the light that is output from each respective prism is sequentially multiplexed and wavelength multiplexed light is output from the third end surface of the final stage prism. | 10-06-2011 |
| 20110286699 | LIGHT GUIDE BODY AND LIGHTING APPARATUS HAVING THE SAME - The present invention provides a light guide body that has a light incidence portion through which light enters the light guide body; a light reflecting portion positioned opposite a light emitting surface that extends from the light incidence portion in a longitudinal direction of the light guide body; and a tapered portion having an inner surface that gradually expands from the light incidence portion toward the light reflecting portion. The tapered portion has a light shielding portion to shield, from the light, a part of the light reflecting portion closest to the light incidence portion. | 11-24-2011 |
| 20120020622 | PLANAR NANOPHOTONIC WAVEGUIDE COMPRISING A STRUCTURE FOR OPTICAL COUPLING WITH AN OPTICAL FIBRE - A single-mode planar nanophotonic waveguide includes an optical core, a cladding coating the optical core, and a structure for the optical coupling of the core of the waveguide with the core of a single-mode optical fibre. The coupling structure includes an adaptation element including a gradual broadening of the core of the waveguide ending in a broadened region of dimension adapted to the core of the optical fibre; and a light transmission element, optically connected to the broadened region, and defining a plane coupling surface by which light is transmitted to the optical fibre, the optical coupling ratio through the surface when the surface is in contact with the air being maximum for a predetermined coupling angle (θ) of the light relative to the coupling surface. | 01-26-2012 |
| 20120045171 | Light Guide Bar and Optical Touch Panel Having the Same - A light guide bar and an optical touch panel utilizing the light guide bar are provided. The light guide bar is applied to an optical touch panel with a sensing area. The light guide bar includes a bar body and a plurality of prisms. The bar body has a first receiving end, a light-exiting surface, and a structure surface. The light-exiting surface is opposite to the structure surface and faces the sensing area while the first receiving end is connected between an end of the light-exiting surface and an end of the structure surface. The prisms are formed on the structure surface. Each prism includes a first surface and a second surface respectively having a first angle and a second angle with respect to the structure surface, wherein the second surface is closer to the first receiving end than the first surface, and the second angle is larger than or equal to the first angle. The prisms are utilized to alter the angle of the light exiting the bar body to improve the touch-sensing effect of the optical touch panel utilizing the light guide bar. | 02-23-2012 |
| 20120207434 | FLAT-PANEL OPTICAL PROJECTION APPARATUS - A light guide of the tapered-waveguide type includes an input slab for expanding a projected image between an input end and an output end, and an output slab arranged to receive rays from the said output end, and to emit them at a point on its face that corresponds to the angle at which the ray is received. The input slab and output waveguide are matched so that all rays injected into the input end undergo the same number of reflections before leaving the output surface. With the invention, the input slab is itself tapered slightly towards the output waveguide. This means that input and output waveguides can be made the same length, in the direction of ray travel, and can therefore be folded over each other with no wasted space. | 08-16-2012 |
| 20120328242 | Optical system for coupling light from point light sources into a flat light guide - The invention relates to an optical system for coupling light from at least one approximately point-shaped light source such as a LED into a flat light guide made of a transparent material such as glass or plastic. The inventive system is characterized in that the point light source is arranged above a surface of the light guide and is associated with an optical element, which couples the light from the point light source into the flat light guide at the surface thereof, wherein the in-coupled light satisfies the condition of the critical angle for total reflection and remains inside the flat light guide until controlled out-coupling. | 12-27-2012 |
| 20130156376 | OPTICAL SYSTEMS FOR INFRARED TOUCH SCREENS - We present optical systems suitable for focusing two substantially collimated beams or sheets of light propagating in different directions onto a common focal point. In some embodiments the optical systems comprise separate focusing elements for each beam or sheet of light, while in other embodiments the optical systems comprise a focusing element and a redirection element. The optical systems have particular application in the receive optics of infrared touch screens, where they enable the detection of additional light paths that assist in the determination of two or more simultaneous touch events. | 06-20-2013 |
| 20130322822 | ATTACHING OPTICAL COMPONENTS USING HOMOGENIZED LASER LIGHT - An attachable optical component is aligned with a base optical component. The attachable optical component has a mounting surface interfacing with the base optical component and an exposed surface opposed to the mounting surface. Laser light is directed to the exposed surface of the attachable optical component for delivery to the mounting surface. The attachable optical component guides and homogenizes the laser light delivered to the mounting surface and uniformly heats a bonding feature between the mounting surface and the base optical component. The directing and subsequent removing of the laser light bonds the attachable optical component to the base optical component via the bonding feature | 12-05-2013 |
| 20130330040 | WEDGE FILTER FOR OPTICAL SUB-ASSEMBLY FOR TRANSCEIVERS - A wedge filter for an optical sub-assembly for transceivers includes an incident face and an emission face. The incident face and the emission face contain an angle so as to change the refraction position of the incident light. Accordingly, the optical signal is incident upon the optical fiber of the optical sub-assembly for transceivers by a predetermined inclination angle so as to rectify the incident direction of the light emitted from the light-emitting element to be coaxial with the emission direction of the light of the optical fiber for achieving optical coupling efficiency. | 12-12-2013 |
| 20150010274 | OPTICAL MODULE, OPTICAL COMMUNICATION APPARATUS, AND INFORMATION PROCESSING SYSTEM INCLUDING THE SAME - Provided are an optical module, an optical communication apparatus, and an information processing system including the same. The optical module includes a lower clad layer, an optical waveguide extended in one direction on the lower clad layer, an optical device on the optical waveguide, a prism disposed between the optical device and the optical waveguide and having a higher refractive index than the optical waveguide, a housing covering the prism and the optical device, and an electrode layer adjacent to the prism and disposed between the housing and the optical waveguide. | 01-08-2015 |
| 20150049988 | OPTICAL PROBE WITH IMPROVED AFFIXING STRUCTURE FOR SUPPORTING A LIGHT-REDIRECTING ELEMENT - An optical probe ( | 02-19-2015 |
| 20160041387 | IMPROVEMENTS IN AND RELATING TO DISPLAYS - An optical component for a display apparatus comprises an optical waveguide part ( | 02-11-2016 |
| 20160116739 | ARCHITECTURES AND METHODS FOR OUTPUTTING DIFFERENT WAVELENGTH LIGHT OUT OF WAVEGUIDES - Architectures are provided for selectively outputting light for forming images, the light having different wavelengths and being outputted with low levels of crosstalk. In some embodiments, light is incoupled into a waveguide and deflected to propagate in different directions, depending on wavelength. The incoupled light then outcoupled by outcoupling optical elements that outcouple light based on the direction of propagation of the light. In some other embodiments, color filters are between a waveguide and outcoupling elements. The color filters limit the wavelengths of light that interact with and are outcoupled by the outcoupling elements. In yet other embodiments, a different waveguide is provided for each range of wavelengths to be outputted. Incoupling optical elements selectively incouple light of the appropriate range of wavelengths into a corresponding waveguide, from which the light is outcoupled. | 04-28-2016 |
