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7630134 Optical element, polarizing element, lighting device, and liquid crystal display  
An optical element of the invention comprises at least two laminated layers of reflective polarizer; and at least one retardation layer for changing polarization properties laminated between the...
7619818 Elliptically polarizing plate and image display  
An elliptically polarizing plate including: a polarizer; and an optical film that includes a laminate of: a retardation film A that includes a cyclic polyolefin resin-containing thermoplastic...
7570425 System, apparatus and method for high efficiency low leakage LCD polarizer  
An apparatus for a liquid crystal display includes a polarizer film configured to receive light from a liquid crystal display and an optical polarizer screen configured to filter light for the...
7567382 Optical filter  
An optical filter such that at least one optically anisotropic crystal plate and at least one substrate are stuck together in a state in which a principal face of the optically anisotropic crystal...
7557989 Reflective polarizer and display device having the same  
A reflective polarizer suitable for use in a display device is disclosed herein. The reflective polarizer includes: a multilayer optical film including alternating layers of first and second...
7548370 Layered structure for a tile wave plate assembly  
The present invention relates to an apparatus for polarizing an incident light beam. In embodiments, a tile wave plate assembly is provided. The tile wave plate includes a layered structure having...
7546039 Systems, devices, and methods for controlling outage probabilities  
Certain exemplary embodiments comprise a method that can comprise, responsive to an instruction to change a setting of a polarization controller, automatically changing a first rotational speed of...
7542206 Light collectors for projection systems  
Disclosed herein are light collectors for use in projection applications. The light collectors gather light from surface emitting sources (e.g., LEDs) of differing color (or same color in some...
7541723 Backlight having a polarization separating element  
A display device includes a backlight having a discharge tube and a reflector. A heat conduction member is attached to the reflector in contact with the discharge tube, so that a part of the...
7538944 Polarizing filter, and method for fabricating same  
A polarizing filter with a gapless polarization separating filter layer formed between a plane of incidence and a plate of transmission of the filter, the polarization separating filter layer being...
7535639 Optical depolarizers and DGD generators based on optical delay  
Techniques and devices for depolarizing light and producing a variable differential group delays in optical signals. In one implementation, an input optical beam is split into first and second...
7532406 Device for homogenizing light  
A device for homogenizing light has at least two cylindrical lens arrays which are placed one behind the other in a direction of diffusion of the light to be homogenized and which each have convex...
7529024 Polarization conversion system and illumination module  
A polarization conversion system includes at least one beam splitting and combining unit having a polarization beam splitting element and a dichroic element, a dichroic unit, a polarization beam...
7511886 Optical beam transformation system and illumination system comprising an optical beam transformation system  
An optical beam transformation system has a sequence of optical elements arranged along an optical axis of the optical beam transformation system and designed for transforming an entrance light...
7511773 Polarized light conversion apparatus  
A polarized light conversion apparatus comprises a polarization device, a light source, a reflection device and a phase changing device. The polarization device includes a light-transmissible body...
7495831 Optical device, display device, and three-dimension image display device for changing a polarization state of a light beam in time  
An optical element, an optical device, and a display device are disclosed that are able to change a polarization state in time order and to produce polarized light with little wavelength dependence...
7495830 Polarisation recuperation system  
A polariser or a system for lighting using such a polariser in a polarisation recuperation system. The polariser comprises first and second polarising beam splitters ( 212 a, 212 b ) for splitting...
7492516 Optical element, polarizing element, lighting device, and liquid crystal display  
An optical element of the invention comprises at least two laminated layers of reflective polarizer; and at least one retardation layer for changing polarization properties laminated between the...
7492519 Refractive boundary elements, devices, and materials  
An optical device includes an interface between two or more media. The refractive indices, orientations of media, and alignment relative to a propagating wave define a refractive boundary at which...
7486443 High extinction ratio and low crosstalk compact optical switches  
An improved optical switch utilizes one polarization modulator, with the beam components traversing it twice. Because of the twice traverse, the extinction ratio of the switch is doubled without...
7474380 Projection optical system, exposure apparatus, and device fabrication method  
The present invention provides a projection optical system which projects an image on a first object plane onto a second object plane, comprising a plurality of optical members inserted in turn...
7468840 Wavelength selective optical switch  
A wavelength selective switch, in which an input optical signal is wavelength-dispersed and polarization-split in two angularly oriented planes. A polarization rotation device, such as a liquid...
7466485 Switchable display apparatus  
A display apparatus comprises: an emissive spatial light modulator comprising an array of pixels each arranged to output randomly polarized light; a birefringent lens positioned to receive light...
7453641 Structures and methods for reducing aberration in optical systems  
An optical system includes at least one cubic crystalline optical element aligned along an optical axis, the at least one cubic crystalline optical element being birefringent and imparting...
7443585 Polarizer, polarization light source and image display unit using them  
A polarization component, capable of efficiently reflecting an obliquely transmitted light beam toward a light source without degrading the transmission-polarization property of a perpendicular...
7440075 Birefringent optical system  
The invention relates to an optical system comprising a fluid chamber 1 and a birefringent part. The fluid chamber comprises first and second fluids 10, 12 having different indices of...
7418202 Article having a birefringent surface and microstructured features having a variable pitch or angles for use as a blur filter  
An optical low pass filter or blur filter, and method of making the filters, using an article having a birefringent surface for refracting incoming light when used with an image sensor. The...
7413317 Polarized UV exposure system  
A light exposure system is used to expose an alignment layer formed of anistropically absorbing molecules so as to allow alignment of subsequently applied liquid crystal polymer (LCP) molecules....
7414786 System and method converting the polarization state of an optical beam into an inhomogeneously polarized state  
A system for converting the polarization state of an optical beam which propagates along a path from an initial polarization state into an inhomogeneous polarization state includes a first...
7400448 Birefringent spectral filter  
A birefringent spectral filter comprises a first birefringent stage and a polarizing beam splitter optically coupled to the first birefringent stage. The first birefringent stage is adapted to...
7381339 Increased yield of cubic crystalline optical elements by crystal orientation  
Increased yield of optical elements from cubic crystal rods, such as made of calcium fluoride, is made possible by orienting the optical elements for supporting the propagation of light along one...
7382535 Wave plate and associated method  
An improved wave plate and associated method are provided. The wave plate includes a plurality of layers of uniaxial crystal including at least one layer of positive uniaxial crystal and at least...
7362489 Multi-conjugate liquid crystal tunable filter  
A hyper-spectral imaging filter has serial stages along an optical signal path with angularly distributed birefringent retarders and polarizers forming interference filters. The retarders can...
7362504 Miniature circulator devices and methods for making the same  
Miniature optical devices, including circulator array devices, are fabricated using thin film coating technology. A typical optical device includes two refraction elements arranged opposite each...
RE40251 Optical element, polarization illumination device, and projector  
Two polarization conversion element arrays are disclosed. Each polarization conversion element array is composed of a plurality of polarization conversion elements for converting light incident...
7360899 Beamsplitting structures and methods in optical systems  
Various embodiments involving structures and methods for illumination can be employed, for example, in projectors, head-mounted displays, helmet-mounted displays, back projection TVs, flat panel...
7357510 Projection-type 3-D image display device using single projector  
A projection-type 3-D image display device includes a single display element, a polarization conversion switch, a first image shifter, a second image shifter, a projection lens unit, a mirrored...
7359584 Polarization beam separator and combiner  
The present invention relates to a device for use in a fiber optic system that may be a communication system, a sensing system or other system using guided-wave optical components. Reducing the...
7359119 Optical arrangement for pre-processing primary illumination light  
An optical arrangement for pre-processing primary illumination light is proposed, wherein a provided spectral processing section (P) comprises a multi-prism assembly ( 10 ) consisting of a...
7355791 Optical system and photolithography tool comprising same  
An optical system, for example a lens for a photolithography tool, includes a group of optical elements (L 1 , L 2 ) that each comprise a birefringent cubic crystal such as CaF 2 . The crystal...
7343057 Integratable optical isolator in a Mach-Zehnder interferometer configuration  
A method of operating an optical isolator having first and second optical splitter-combiners disposed within a semiconductor die. The optical splitter-combiners are coupled together into an...
7334900 Three-dimensional image projecting apparatus  
The invention provides a three-dimensional image projecting apparatus. The three-dimensional image projecting apparatus comprises a light signal generator, a filter device, a focusing device and a...
7335874 Method and apparatus for generating a circularly polarized illumination beam  
A method and apparatus for illuminating a subject with deep UV light and detecting 2-dimensional image information, e.g., a transmission image, fluorescence image, reflected light image, etc. The...
7327518 Attenuator for high-power unpolarized laser beams  
A method for attenuating an unpolarized laser beam includes separating the laser beam into two plane-polarized beams. The plane-polarized beams are polarization rotated. Each of the...
7324280 Apparatus for providing a pattern of polarization  
A polarization pattern assembly produces a polarization pattern. In an embodiment, a polarization pattern assembly includes a frame that supports a polarization pane in a central region of the...
7321464 Electroluminescent light source and display incorporating same  
A brightness enhanced reflective polarizer includes a reflective polarizer and a structured surface material.
7319558 Wide-band wave plate and a controlling method thereof  
A wide-band wave plate having at least two wave plates, each of which has a microstructure to generate a phase difference, the microstructure having a cycle not shorter than 1/n min of a shortest...
7317539 Polarizing beam splitter device, interferometer module, lithographic apparatus, and device manufacturing method  
The invention relates to a polarizing beam splitter device, an interferometer module system, a lithographic apparatus, and a device manufacturing method. The polarizing beam splitter device...
RE39951 Polarization conversion element, polarization illuminator, display using the same illuminator, and projector  
A polarizing conversion device in accordance with the invention includes a first optical element for condensing an incident beam and forming a plurality of intermediate beams spatially separated...
7312924 Polarizing multiplexer and methods for intra-oral scanning  
A polarizing multiplexer includes a first arm with a first beam splitter to receive a first unpolarized light from an object and a first retarder coupled to the first beam splitter to generate a...