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| Number | Title | Issue Date |
| 7848000 | Birefringent spectral filter with wide field of view and associated communications method and apparatus A spectral filter is adapted for use in a receiver, for example in a short range submarine laser signal path, wherein the relative orientations of the receiver is such that the signal may appear diffusely or at an unknown point in a wide external field of view aroun... | 12/07/2010 |
| 7817325 | Electro-optic element and scanning optical device An electro-optic element includes an electro-optic crystal having a birefringent property, and in which a refractive index distribution is generated in accordance with an intensity of an electric field caused inside, a pair of intensity modulating electrodes for app... | 10/19/2010 |
| 7777931 | Electro-optic element and scanning optical device An electro-optic element includes an electro-optic crystal having a birefringent property, and in which a refractive index distribution is generated in accordance with an intensity of an electric field caused inside, a pair of intensity modulating electrodes for app... | 08/17/2010 |
| 7777932 | All optical system and method for providing extended depth of focus of imaging An imaging system and method are presented. The system comprises an imaging lens unit, an imaging detector, and a birefringent element located between the imaging lens unit and the imaging detector. The system is thus configure and operable to provide in-focus imagi... | 08/17/2010 |
| 7679806 | Method for making optical elements for microlithography, the lens systems obtained by the method and their uses The optical elements for ultraviolet radiation, especially for microlithography, are made from cubic granet, cubic spinel, cubic perovskite and/or cubic M(II)- as well as M(IV)-oxides. The optical elements are made from suitable crystals of Y3Al5 | 03/16/2010 |
| 7440157 | Optically addressed spatial light modulator and method An optical device has an electrically insulating first barrier layer disposed over a first electrode layer, a photoconductive layer disposed over the first barrier layer, and a carrier confining layer disposed over the photoconducting layer. The carrier confining la... | 10/21/2008 |
| 7435939 | Dynamic optical phase shifter compensator A birefringent, electrically-controlled, wavelength selective, pixelated optical phase shifting device, in which the correct drive voltage for a desired phase shift through any pixel can be determined independently of changes in the drive voltage arising from change... | 10/14/2008 |
| 7433111 | Electrooptic modulation element On one pair of opposed side faces (1a, 1b) of electro-optic crystal (1), grooves (3a, 3b) are formed so as to make bottom faces of the grooves approach each other and make a distance between the bottom f... | 10/07/2008 |
| 7426069 | Optical apparatus and imaging apparatus An optical apparatus is disclosed. The optical apparatus includes: a first optical element having a first polarizing layer containing a material having a refractive index that changes in accordance with the magnitude of applied voltage and first and second transpare... | 09/16/2008 |
| 7403677 | Fiberoptic reconfigurable devices with beam shaping for low-voltage operation An apparatus and method to operate on a light beam by using a lens that collimates the light beam to a collimated beam with at least one cross-sectional dimension less than a critical dimension of 400 μm or less over a working range WR. The apparatus has a bulk ele... | 07/22/2008 |
| 7362507 | Polarizing beam splitter A polarizing beam splitter is disclosed that includes a first prism, a second prism, and a reflective polarizing film disposed between the first prism and the second prism. The first prism comprises a first polymeric material, and has a first outer curved surface an... | 04/22/2008 |
| 7336418 | Optical attenuator An optical attenuator with increased dynamic range and reduced temperature-dependence over the dynamic range. The optical attenuator has a Faraday rotational angle variable device which applies an external magnetic field to light polarized by a garnet crystal, and a... | 02/26/2008 |
| 7336323 | Liquid crystal filter with tunable rejection band An optical wavelength filter uses birefringence and polarization to discriminate and block a wavelength stop band. Birefringent elements, each having a fixed retarder and a liquid crystal, are placed along the signal path with the fast and slow axes in each pair bei... | 02/26/2008 |
| 7327408 | Illuminator that generates linearly polarized light for microdisplay based light engine A hollow sphere with a scattering (e.g., white diffusive) interior surface directs light input from at least one input light source to an exit. In one embodiment, an internal hot mirror and phosphor are positioned to intercept the input light on which visible light ... | 02/05/2008 |
| 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 |
| 7310455 | Variable attenuation signal acquisition probing and voltage measurement systems using an electro-optical cavity A variable attenuation signal acquisition probing system and voltage measurement system uses an optical cavity to acquire a signal under test. The probing system has an optical transmitter and receiver that are coupled to the optical cavity via an optical transmissi... | 12/18/2007 |
| 7298540 | Equalizing optical wavelength routers A dynamic equalizing optical channel router includes an input port for receiving a wavelength division multiplexed composite optical signal comprising a plurality of channels; at least one output port; a diffraction grating optically coupled to the input and output ... | 11/20/2007 |
| 7295360 | Structure having light modulating film and light control device using the same A structure includes a substrate and a light modulating film formed on top of the substrate. The light modulating film is made of polycrystalline PLZT containing Pb, Zr, Ti, and La as constituent elements. The film has a La concentration in the range of 5 at % to 30... | 11/13/2007 |
| 7286743 | High dynamic range integrated receiver A high dynamic range integrated (HDRI) receiver includes a variable optical attenuator (VOA) for attenuating an incoming optical signal before the optical signal is directed to a photo-detector for conversion into an electrical signal. An optical block receives the ... | 10/23/2007 |
| 7255779 | Indolecarboxylic ester trimer and electrochemical cell using the same The present invention provides a novel indole carboxylic ester trimer which is characterized by being represented by the following general formula (1): wherein R represents a straight or branched chain alkyl grou... | 08/14/2007 |
| 7250923 | Three-dimensional image display apparatus A three-dimensional image display apparatus includes an image display configured to output image light which arrays a plurality of pixels and has polarization, a lens array arranged in front of the image display, configured to function as lens at light which has a 1... | 07/31/2007 |
| 7237900 | Polarization conversion system A polarization conversion system suited for LCD or LCoS-based projection applications is disclosed. The present invention polarization conversion system encompasses a light pipe with a rectangular light tunnel therein defined by four side reflection mirrors. A front... | 07/03/2007 |
| 7236290 | Electrophoretic medium with improved stability An electrophoretic medium comprises a liquid and at least one particle disposed within the liquid and capable of moving therethrough on application of an electric field to the medium. The medium further comprises a free radical scavenger selected from the group cons... | 06/26/2007 |
| 7227702 | Bi-convex solid immersion lens A bi-convex solid immersion lens is disclosed, having a top and bottom convex surfaces. The radius of curvature of the bottom surface is larger than that of the top surface. A conical sloped side-wall connects the top and bottom surface. ... | 06/05/2007 |
| 7224860 | Multi-port optical switches Optical switches which take multiple incoming optical signals and switch them to multiple output ports to realize multiple working states. For example, in a four by four switch embodiment, twenty-four working states can be selected. These switches rely on magneto-op... | 05/29/2007 |
| 7223672 | Processes for forming backplanes for electro-optic displays A non-linear element is formed on a flexible substrate by securing the substrate to a rigid carrier, forming the non-linear element, and then separating the flexible substrate from the carrier. The process allows flexible substrates to be processed in a conventional... | 05/29/2007 |
| 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 |
| 7177491 | Fiber-based optical low coherence tomography Generally, and in one form of the present invention, is a polarization-maintaining fiber-based polarization sensitive optical low coherence reflectometer for depth resolved birefringence measurement. With the present invention, linear birefringence of a sample may b... | 02/13/2007 |
| 7170670 | Electrophoretic medium and display with improved image stability An electrophoretic medium comprises a plurality of particles suspended in a suspending fluid, the particles being capable of moving through the fluid upon application of an electric field to the medium, the fluid having dissolved or dispersed therein a polymer havin... | 01/30/2007 |
| 7158275 | Polarization modulator Systems and techniques for changing a polarization profile of light to a desired polarization profile. In some implementations, a polarization modulator is in communication with a stress modulator. The polarization modulator alters the polarization profile of light ... | 01/02/2007 |
| 7154668 | Wavelength dependent optical attenuator and variable attenuation profile controller The attenuation profile of an optical system, which defines the power variation as a function of wavelength is adjusted to alter the slope of its contour. The device is useful in a wavelength division modulation system to flatten the profile of an amplifier or the l... | 12/26/2006 |
| 7154669 | Method and system for correction of intrinsic birefringence in UV microlithography Systems and methods for improved correction of intrinsic birefringence are provided. Two pairs of optical elements correct for intrinsic birefringence of optical materials. A combination of design criteria for the set of optical elements, including refractive power ... | 12/26/2006 |
| 7154670 | Methods and apparatus for polarization control Methods and apparatus of performing polarization control for optical transmissions. The methods and apparatus enable polarization control devices to achieve a desired output state of polarization regardless of the input state of polarization. The desired state of po... | 12/26/2006 |
| 7148128 | Electronically addressable microencapsulated ink and display thereof We describe a system of electronically active inks which may include electronically addressable contrast media, conductors, insulators, resistors, semiconductive materials, magnetic materials, spin materials, piezoelectric materials, optoelectronic, thermoelectric o... | 12/12/2006 |
| 7145520 | Display apparatus box using a spatial light modulator A digital display apparatus (10) using a spatial light modulator (30) projects a monochrome or multicolor image onto a display surface (40) for diagnostic imaging applications. The image can be displayed on a direct-view display surface (40 | 12/05/2006 |
| 7130123 | Polarization conversion element and optical system containing such polarization conversion element A polarization conversion element with four phase plates laminated on a substrate plate, in the order of first, second, third and fourth phase plates from a light incident side. The first and fourth phase plates have substantially same retardation values, while the ... | 10/31/2006 |
| 7119957 | Polarization luminaire and projection display A polarization luminaire is disclosed having a light source that emits light having random polarization directions, a first lens plate and a second lens plate. The first lens plate has a plurality of condenser lenses, the condenser lenses being decentered lenses. Th... | 10/10/2006 |
| 7106443 | Optical signal-to-noise monitor having increased coherence Methods and apparatus for rapid, accurate OSNR measurements by directly measuring the spectrally-resolved State of Polarization (SOP) variation across each DWDM channel and using a polarization controller to deterministically extinguish the signal across narrow freq... | 09/12/2006 |
| 7095559 | Variable optical delay circuit In a variable optical delay circuit to be used for compensation for polarization mode dispersion of an optical signal and for other purposes, there are provided a first birefringent member, a second birefringent member and a variable optical rotator interposed betwe... | 08/22/2006 |
| 7085052 | Over-parameterized polarization controller A controller, particularly for setting a desired or randomized polarization state of an output light beam derived from an input, has more than the minimum number of controllable optical elements needed to determine the state of the output. The controller applies con... | 08/01/2006 |
