| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 359500000 |
With particular material or mounting structure
| 39 |
| 359495000 |
For beam deflection or splitting
| 21 |
| 359497000 |
Using plural elements
| 21 |
| 359496000 |
Prisms | 3 |
| 20080285129 | COLOR LIGHT COMBINING SYSTEM FOR OPTICAL PROJECTOR - A color light combining system comprises a polarizing beam splitter that includes a reflective polarizer film, a first prism face that receives a first unpolarized color light, a second prism face that receives a second unpolarized color light, and a third prism face that provides a first combined light output that includes combined first color light polarized in a first direction and second color light polarized in a second direction. The polarizing beam splitter includes a reflector at a fourth prism face. A color-selective stacked retardation polarization filter faces the third prism face. The first color selective stacked retardation polarization filter provides a second combined light output that includes the first and second color lights that are combined and have the same polarization direction. | 11-20-2008 |
| 20090237788 | OPTICAL APPARATUS AND PROJECTOR - An optical apparatus includes an optical element disposed on an optical path along which the light flux emitted from a light source travels, and a polarizing element disposed on the light flux emitting-side of the optical element. The polarizing element includes a first prism having a light flux incident-side end surface on which the light flux having emitted from the optical element is incident and an emitting-side inclined surface inclined to the light flux incident-side end surface, and a polarizing element body provided on the emitting-side inclined surface, the polarizing element body transmitting first linearly polarized light out of the light flux having passed through the first prism and reflecting second linearly polarized light polarized perpendicular to the first linearly polarized light toward the first prism. The optical element is integrated with the polarizing element with an interposed adhesive layer formed on the light flux incident-side end surface. The refractive index n0 of the adhesive layer is set to satisfy the following equation: | 09-24-2009 |
| 20100309551 | OPTICAL FILMS - An optical film structure for backlit displays having two films, both in prisms up configuration. The first film, closer to the light guide, has an array of generally symmetric 90-degree prisms facing the viewer. The second film, farther from the light guide, has an array of generally asymmetric prisms facing the viewer, with one face of the prisms inclined at about 45 degrees and the other face generally perpendicular to the plane of the backlight. The prisms of the first and second films may have an azimuthal angle between them, and may have different pitches from each other. The film structure recycles a portion of the light from the light guide, thereby helping to increase uniformity over the area of the display. The film structure also compresses the light emerging from the light guide, thereby providing a more sharply peaked brightness distribution for the viewer. | 12-09-2010 |
| Entries |
| Document | Title | Date |
|---|
| 20090034071 | METHOD FOR PARTITIONING AND INCOHERENTLY SUMMING A COHERENT BEAM - A method and apparatus for decorrelating coherent light from a light source, such as a pulsed laser, in both time and space in an effort to provide intense and uniform illumination are provided. For some embodiments employing a pulsed light source, the output pulse may be stretched relative to the input pulse width. The methods and apparatus described herein may be incorporated into any application where intense, uniform illumination is desired, such as pulsed laser annealing, welding, ablating, and wafer stepper illuminating. | 02-05-2009 |
| 20090040610 | METHOD AND APPARATUS FOR GENERATING RADIALLY AND/OR AZIMUTHALLY POLARIZED LIGHT BEAMS - A method and an apparatus for generating a polarized light beam to be projected onto an object plane are provided. A converging or diverging light beam ( | 02-12-2009 |
| 20090052031 | POLARIZATION CONVERSION ELEMENT AND METHOD FOR MANUFACTURING THE SAME - A polarization conversion element includes: a plurality of light transmitting substrates sequentially bonded at a plurality of inclined planes thereof that form an angle of approximately 45° with respect to a light incident face and a light emitting face being approximately parallel to the light incident face; a retardation plate providing a phase difference to incident polarized light; a polarization separation film separating incident light into two types of polarized light; and an air layer. In the element, the polarization separation film and the air layer are alternately formed along the plurality of inclined planes. | 02-26-2009 |
| 20090059368 | OPTICAL FILM, AND GLASS - The present invention provides glass containing a base, and an optical film, wherein the optical film contains a vertically polarizing film having a polarizer whose absorption axis is substantially vertically oriented to a film surface, and a π/2 optical rotation film containing an optical rotator for rotating a vibration direction of linearly polarized light by substantially 90 degrees. | 03-05-2009 |
| 20090067048 | STRUCTURED ORIENTED FILMS FOR USE IN DISPLAYS - Films having a structured surface with an engineered feature, such as prism grooves, to be used in displays having a backlight. The films can be arranged in a stack having one or more of the following: birefringent brightness enhancement films, non-birefringent brightness enhancement films, polarizers, diffusers, birefringent turning films, and non-birefringent turning films. Those films can be arranged in any order from the backlight to a viewer. | 03-12-2009 |
| 20090195875 | Avoiding Interference Artifacts in a Head-Up Display or a Reflected See-Through Type Display - Briefly, in accordance with one or more embodiments, a birefringent layer may be utilized in conjunction with a head-up display (HUD) for a vehicle or the like, for example where the birefringent layer is disposed in or on the windshield. The birefringent layer may impart a change in the polarization of light emerging from a projector of the head-up display in order to reduce or minimize interference between beams from the display and reflecting off of two or more surfaces that are combined at the viewer's eye, and/or to reduce or minimize the effect of polarizing sunglasses on the viewability of the image projected by the display. In one or more embodiments, the birefringent layer alters the polarization of the light reaching the viewer's eye if the user is wearing polarizing glasses or lenses so that less light from the display is blocked. | 08-06-2009 |
| 20090273836 | OPTICAL FILM COMPRISING BIREFRINGENT NAPHTHALATE COPOLYESTER HAVING BRANCHED OR CYCLIC C4-C10 ALKYL UNITS - The present invention relates to multilayer optical films and birefringent copolyester films. The birefringent copolyester optical layer or birefringent copolyester film comprises a major amount of naphthalate units, ethylene units, and a minor amount of branched or cyclic C4 to C10 alkyl units. Also described are certain copolyester polymeric materials further comprising subunits of a phthalate ionomer such as dimethyl sulfosodium isophthtalate ionomer. | 11-05-2009 |
| 20100134886 | INTEGRATED PLANAR POLARIZING DEVICE AND METHODS OF FABRICATION - The embodiments of the present invention provide an integrated planar polarizing device and methods of fabrication. The device, in the order of incidence along an optical path of an incident light beam from back position to front position, comprises a planar array of micro mirrors, a quarter wave retarder film and a reflective polarization plate. The micro mirrors are regularly spaced-apart in an identical tilted angle α relative to a base plane. The quarter wave retarder film is positioned between the micro mirrors and the reflective polarization plate. The reflective polarization plate is in parallel to the base plane and is adapted to transmit and polarize a first polarized light of the incident light beam in a first polarization state, and to reflect and polarize a second polarized light of the incident light beam in a second polarization, The micro mirrors are adapted to reflect the second polarized light passing and polarized through the quarter wave retarder film first time to pass and be polarized through the quarter wave retarder film second time, thereby converting the second polarized light to be a third polarized light in the first polarization state which can transmit the reflective polarization plate. The planar array of micro mirrors, the quarter wave retarder film and the reflective polarization plate are embedded in a transparent medium. The embodiments of the present invention could improve in device integration and simplification in assembly robustness. | 06-03-2010 |
| 20100142051 | Optical system, exposure system, and exposure method - An optical system is able to achieve a substantially azimuthal polarization state in a lens aperture while suppressing loss of light quantity, based on a simple configuration. The optical system of the present invention is provided with a birefringent element for achieving a substantially circumferential distribution or a substantially radial distribution as a fast axis distribution in a lens aperture, and an optical rotator located behind the birefringent element and adapted to rotate a polarization state in the lens aperture. The birefringent element has an optically transparent member which is made of a uniaxial crystal material and a crystallographic axis of which is arranged substantially in parallel with an optical axis of the optical system. A light beam of substantially spherical waves in a substantially circular polarization state is incident to the optically transparent member. | 06-10-2010 |
| 20100188749 | OPTICAL FILM AND METHOD FOR PRODUCTION THEREOF - The invention relates to an optical film containing polyester with a specific structure, and methods for production thereof. Further, the invention also relates to an optical laminate, a polarizing plate, and an image display device each using the optical film. The polyester may be obtained by condensation polymerization of dicarboxylic acid compound(s) and bisphenol compound(s), and preferably has no halogen atom in its chemical structure. According to the invention, high productivity of the optical film can be achieved since the polyester has a high solubility in solvents, and an environmental loading for production can be reduced. | 07-29-2010 |
| 20100265582 | Optical isolators - Optical isolators are important for optical communication systems and serve to reduce the unwanted reflection from the connectors and components in the output side. Conventional optical isolators have two polarizers and a Faraday rotator. The present invention provides simplified isolators which can achieve the optical isolation function. | 10-21-2010 |
| 20100277798 | Method and Device for Polarization of an Optical Radiation - A method of stabilizing the state of polarization of an optical radiation comprises: 1) applying sequentially to the optical radiation a first and a second controllable phase retardation; 2) detecting an optical power of at least a first polarized portion of the optical radiation obtained after step 1; 3) applying sequentially to the optical radiation obtained after step 1 a third and a fourth controllable phase retardation; 4) detecting an optical power of a further polarized portion of the optical radiation obtained after step 3; 5) controlling, responsive to the optical power of said first polarized portion, the second controllable phase retardation so as to maintain the polarization state of the optical radiation obtained after step 1 at a defined great circle r on a Poincare sphere; 6) in case the second controllable phase retardation reaches a first limit value, commuting the first controllable phase retardation between first and second values; 7) controlling, responsive to the optical power of said further polarized portion, the fourth controllable phase retardation so as to maintain the polarization state of the optical radiation obtained after step 3 at a defined state of polarization; 8) in case the fourth controllable phase retardation reaches a second limit value, commuting the third controllable phase retardation between third and fourth values, keeping constant the first controllable phase retardation while the third controllable phase retardation is commuting between said third and fourth values. A polarization stabilizing device based on the method above is also disclosed. | 11-04-2010 |
| 20100302636 | VIEWER AND KIT FOR AUTHENTICATING BIREFRINGENT PATTERN, AUTHENTICITY-VERIFYING MEDIUM AND METHOD OF VERIFYING AUTHENTICITY - A viewer for authenticating a birefringent pattern having at least two regions having a different birefringence from each other, wherein the viewer contains a polarizing plate and at least one optically anisotropic layer laminated on the polarizing plate, a front retardation of the at least one optically anisotropic layer is 5 nm or more and the total of the front retardation of the at least one optically anisotropic layer and a maximum value of front retardation of the birefringent pattern is greater than λ/2. | 12-02-2010 |
| 20100321780 | METHOD FOR PRODUCING OPTICAL FILM, OPTICAL FILM, AND IMAGE DISPLAY - A method for producing an optical film including a birefringent layer having a refractive index distribution satisfying nx>nz>ny that can be produced by a small number of steps, contains less foreign matter trapped therein, and has high productivity. | 12-23-2010 |
| 20110013278 | BIREFRINGENT FILM, POLARIZING PLATE, IMAGE DISPLAY, AND AROMATIC POLYESTER - The birefringent film of the present invention contains an aromatic polyester having a repeating unit represented by the following general formula (1). | 01-20-2011 |
| 20110038046 | NON-RECIPROCAL UNIT USED FOR POLARIZATION DEPENDENT TYPE OPTICAL ISOLATOR AND POLARIZATION DEPENDENT TYPE OPTICAL ISOLATOR - Provided are a non-reciprocal unit used for a polarization dependent type optical isolator and a polarization dependent type optical isolator that are simple in structure, can prevent damages due to light and heat and can obtain a high extinction ratio. In a polarization dependent type optical isolator, an input side lens (first lens) ( | 02-17-2011 |
