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| Number | Title | Issue Date |
| 7407292 | Projector and polarization member used in projector Aspects of the invention can provide a polarization member that can include a reflection type polarization element that transmits, of an incident light, a linear polarization component in a specific direction and reflects components other than the linear polarizatio... | 08/05/2008 |
| 7387391 | Apparatus and method for mounting imagers on stress-sensitive polarizing beam splitters An optical device that includes an optical element, an imager, and a prism bracket. The optical element includes an optical element having first and second prisms coupled together. The imager is arranged adjacent to the first prism and configured to receive light fr... | 06/17/2008 |
| 7369186 | Polarizing beam splitter featuring stacked grating layers and display including the same A polarizing beam splitter includes a polarization splitting layer which includes stacked one-dimensional grating layers. The grating layers can include alternating layers of at least one H layer having an effective refractive index nH for p-polarized lig... | 05/06/2008 |
| 7364302 | Projection display system using multiple light sources and polarizing element for using with same An image projection system has two illumination beams of different colors. A first polarizing beamsplitter (PBS) has first and second input faces. Light of the first color is incident on the first input face and the light of the second color is incident on second in... | 04/29/2008 |
| 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 other along a propagation axis and coupled on opposite ends to first an... | 04/22/2008 |
| 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 displays as well as other optical systems. Certain embodiments may incl... | 04/22/2008 |
| 7357511 | Stress birefringence compensation in polarizing beamsplitters and systems using same Some projection systems use a polarization beamsplitter (PBS) for coupling light to and from an image-forming device. The PBS is typically formed with a reflective polarizing layer disposed between glass covers. Stress birefringence in the glass cover lying between ... | 04/15/2008 |
| 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 plurality of sequentially/consecutively connected prisms (21, 22)... | 04/15/2008 |
| 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 light tunnel, and a screen unit. The screen unit includes an image separ... | 04/15/2008 |
| 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 number of lenses required to couple the waveguides and the free-space pa... | 04/15/2008 |
| 7355789 | Phase filter An optical device with a focusing optic that focuses a light beam in a focal plane and brings about a phase shift between a first part of the light beam and a second part of the light beam. The optical device has a first interface and a second interface, the first i... | 04/08/2008 |
| 7350928 | Projection display system A projection display system comprises an illumination device, a prism assembly, a projection lens and a reflective light valve. The prism assembly has a first light incident surface, a first light emitting surface and a second light emitting surface. The first light... | 04/01/2008 |
| 7339735 | Polarization recovery system for projection displays A waveguide polarization recovery system both polarizes the input light energy for use with an LCD imager and converts the polarity of unusable light energy to add to the illumination of the LCD imager. The compact polarization recovery waveguide system generally in... | 03/04/2008 |
| 7333685 | Variable optical attenuator systems Low loss, reliable variable optical attenuators and 1×2 switches and polarization insensitive low loss, reliable variable optical attenuators and 1×2 optical switches are described. In one embodiment, a system of the present invention includes a polarization separ... | 02/19/2008 |
| 7318645 | Beam splitter A beam splitter includes a first member having at least a first dichroic layer, and a second member having at least a second dichroic layer, the first member being crossed relative to the second member. ... | 01/15/2008 |
| 7317528 | Ellipsometer, measurement device and method, and lithographic apparatus and method An ellipsometer includes an optical component and a detector. The optical component has two birefringent parts in optical communication via a border surface. Light incident on the border surface is split into two reflected and two transmitted components. The detecto... | 01/08/2008 |
| 7315418 | Polarizing beam splitter assembly having reduced stress A polarizing beam splitter includes a multilayer polarizing film, a first cross-linked silicone gel layer disposed on the multilayer polarizing film, a first rigid cover disposed on the cross-linked silicone gel layer, and a second rigid cover disposed adjacent to t... | 01/01/2008 |
| 7280275 | High efficiency beam distribution with independent wavefront correction A beam distribution apparatus includes a stack of parallelogram prisms and beam-splitting coatings each located between opposing parallel faces of adjacent parallelogram prisms. The stack is mounted on an entrance face of a triangular prism. The triangular prism inc... | 10/09/2007 |
| 7258445 | Polarization splitter, optical unit and image projector A polarization splitter includes first and second glass members, and a polarization splitting layer and an adhesive layer arranged between the first and second glass members, wherein the polarization splitter satisfies α2×E0.5, where α i... | 08/21/2007 |
| 7251076 | Optical component and method for producing thick polyimide film An optical component according to the present invention comprises a substrate, and at least one optical element obtained by processing at least one thick optical film provided on the substrate. The optical component has a plurality of surfaces substantially not para... | 07/31/2007 |
| 7234816 | Polarizing beam splitter assembly adhesive A polarizing beam splitter (PBS) includes a multilayer reflective polarizing film, a pressure sensitive adhesive is disposed on the multilayer reflective polarizing film, a first rigid cover is disposed on the pressure sensitive adhesive. The PBS can be used in a va... | 06/26/2007 |
| 7230763 | Polarizing beamsplitter A polarizing beamsplitter is provided, comprising two wedge-shaped prisms of a birefringent material, the prisms forming a plan-parallel plate, wherein an incident light beam is separated into two partial beams being arranged parallel to the incident beam when emerg... | 06/12/2007 |
| 7227685 | Optical film and liquid-crystal display device An optical film has a transparent film and an adhesive layer provided on one surface of the transparent film. The adhesive layer has a refractive index different by 0.12 or less from that of a layer of the one surface of the transparent film. The transparent film ha... | 06/05/2007 |
| 7216986 | Color separating and mixing element, video light producing device, and projection type video display A color separating and mixing element comprises, in its transparent cube, a first optical function surface formed on a dividing surface for dividing the cube into two triangular prisms and a second optical function surface formed on another dividing surface. The fir... | 05/15/2007 |
| 7207678 | Prism for high contrast projection Prism elements having TIR surfaces placed in close proximity to the active area of a SLM device to separate unwanted off-state and/or flat-state light from the projection ON-light bundle. The TIR critical angle of these prisms is selected to affect either the off-st... | 04/24/2007 |
| 7190519 | Plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit This specification discloses a polarizing. element for dividing light into first and second polarized lights differing in polarized state from each other by a polarizing dividing surface, directing the first polarized light in a first direction, reflecting the secon... | 03/13/2007 |
| 7187497 | Polarization insensitive optical switching and routing systems and methods of manufacturing and operation Polarization converter assemblies are utilized to provide switching and routing systems with effective coupling between a first and second router assemblies, and to provide polarization insensitive switching and routing systems. An improved optical switching/routing... | 03/06/2007 |
| 7180666 | Polarized light illumination device The invention concerns a polarized light illumination device comprising in particular: a light source, an optical Fresnel Rhomb polarization device receiving light from the source and reflecting it at least twice on at least two opposite surfaces, a reflective polar... | 02/20/2007 |
| 7173762 | Optical isolator with reduced insertion loss and minimized polarization mode dispersion An isolator is disclosed that features a single birefringent correction element. The correction element is configured to eliminate differential group delay and walk-off simultaneously. ... | 02/06/2007 |
| 7170678 | Optical color separation and synthesis system, and method of constructing optical color separation and synthesis system An optical color separation and synthesis system is constructed according to a method, in which four first to fourth polarization beam splitters are arranged in such a manner that polarization separating surfaces of the polarization beam splitters form an X-shape, a... | 01/30/2007 |
| 7167311 | Polarizing beamsplitter A polarizing beamsplitter is provided, comprising two wedge-shaped prisms of a birefringent material, the prisms forming a plan-parallel plate, wherein an incident light beam is separated into two partial beams being arranged parallel to the incident beam when emerg... | 01/23/2007 |
| 7154667 | Birefringent networks A birefringent network can be formed from a pair of beam directing elements that sandwich a birefringent filter. One of the beam director elements can be a polarizing beam splitter and the other of the beam director elements can be a reflector or polarizing beam spl... | 12/26/2006 |
| 7145719 | Optical cores and projection systems containing the optical core LCD projection systems that use reflective LCD imager units commonly use one or more polarization beamsplitters to separate the light incident on the imager from the light reflected by one or more respective imagers. The polarizing beamsplitters can be mounted onto ... | 12/05/2006 |
| 7139125 | Polarizing turning film using total internal reflection A light redirecting article redirects light toward a target angle. The light redirecting article has an input surface for accepting incident illumination over a range of incident angles and an output surface with a plurality of light redirecting structures, each lig... | 11/21/2006 |
| 7137705 | Optical device with optical modulator fixation-enhancing structure and projector A cross dichroic prism as a color-combining optical device and optical modulators constituting an optical device body are fixed with insulating pins being interposed. The optical device body includes a base and reinforcing members, supporting surfaces for supporting... | 11/21/2006 |
| 7137704 | Color splitting/combining optical system and image projecting apparatus A color splitting/combining optical system includes a first optical member for color splitting and a second optical member which has a polarization splitting surface for color splitting/combining, a third optical member for color combining a first color-selective wa... | 11/21/2006 |
| 7130122 | Polarization recovery system for projection displays A waveguide polarization recovery system both polarizes the input light energy for use with an LCD imager and converts the polarity of unusable light energy to add to the illumination of the LCD imager. The compact polarization recovery waveguide system generally in... | 10/31/2006 |
| 7121671 | Phase-compensated cube corner in laser interferometry A phase-compensating cube corner retroreflector includes three rear reflecting surfaces. The first and the third rear reflecting surfaces can be coated with a phase-compensating film stack that induces 2nπ phase difference upon reflection, where n is an integer inc... | 10/17/2006 |
| 7116479 | Array polarization beamsplitter and combiner A method and apparatus is described to beam split or combine light for multiple fiber optic channels in a single device. Multiple light beams may enter the device through an array of fiber ports with each port having a collimating lens. The device includes a beamspl... | 10/03/2006 |
| 7116480 | Method and apparatus for optical switching An optical switch includes a first port, a second port, a first component group, a second component group, and a switching component group. The switching component group includes a reflector, a polarization beam splitter coupled to the reflector, and a polarization ... | 10/03/2006 |
