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| Number | Title | Issue Date |
| 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 |
| 7369723 | High speed piezoelectric optical system with tunable focal length A varifocal optical system includes a substantially circular membrane deposited on a substrate, and a ring-shaped PZT thin film deposited on the outer portion of the circular membrane. The membrane may be a MEMS-micromachined membrane, made of thermal oxide, polysil... | 05/06/2008 |
| 7330611 | Method and apparatus for enhancing the extinction ratio in mode converters A method and apparatus for optimizing a non-ideal, real mode converter to substantially achieve the performance of an ideal mode converter. The method consists of optimizing the input linear polarization to the mode converter to balance the power in the principal mo... | 02/12/2008 |
| 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 |
| 7292382 | Light control unit A light control unit comprises: a substrate; an insulating film; a first transistor; a reflecting film formed on the insulating film; a light modulating film formed on the reflecting film; a plurality of pairs of electrodes arranged two-dimensionally on the light mo... | 11/06/2007 |
| 7203210 | Methods and devices for forming a high-power coherent light beam A diode laser for providing a high-energy coherent light beam suitably includes an array of laser diodes, each producing a laser beamlet. The beamlets are provided to a spatial light modulator (SLM) with an array of pixels, each pixel corresponding to a portion of t... | 04/10/2007 |
| 7180652 | Mars optical modulators The specification describes an improved Moving Anti-Reflection Switch (MARS) device structure that largely eliminates charge build up on the movable membrane, and reduces stresses that cause curling of the membrane. The improved device uses a movable membrane made o... | 02/20/2007 |
| 7170664 | Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using ... | 01/30/2007 |
| 7130121 | Erbium-doped fiber amplifier and integrated module components An EDFA with integrated input and output modules is presented. The integrated input module has a packaged pump laser diode mounted to the metal EDFA package to provide a heat sink for the pump laser diode which sends the pump laser light over a optical fiber section... | 10/31/2006 |
| 7075706 | Variable optical element, a pickup apparatus having the variable optical element, and an information recording and reproducing apparatus having the pickup apparatus An information recording/reproducing apparatus of the invention is equipped with an objective lens, a light source and a variable optical element having a grating which demonstrates a piezo-electric effect by means of an electric field. The light source emits and ir... | 07/11/2006 |
| 7068431 | Optical device using photonic crystal and light beam deflection method using the same A compact, low-consumption optical device using a photonic crystal is provided. This optical device comprises a photonic crystal designed to have a shape of a dispersion surface with a strong direction dependence at a frequency, and light input means for allowing a ... | 06/27/2006 |
| 7054055 | Acousto optic element An acousto optic element comprises optically transparent acousto optic medium having light incoming plane, light outgoing plane facing light incoming plane, transducer joining plane, and inclined plane tilted to transducer joining plane and piezoelectric transducer ... | 05/30/2006 |
| 7035497 | Miniature 1×2 magneto-optic switch A magneto-optical switch includes a birefringent crystal that receives a light beam, a half-wave plate pair that receives the light beam from the birefringent crystal, a Faraday rotator that receive the light beam from the half-wave plate, a prism that receives the ... | 04/25/2006 |
| 7034980 | Optical element, optical head, optical recording reproducing apparatus and optical recording/ reproducing method The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using ... | 04/25/2006 |
| 7035009 | Apparatus and method for controlling polarization in an optical communications medium An exemplary polarization controller includes a first optical element having a first optical axis and configured to receive light having a first phase, a second optical element having a second optical axis and configured to emit the light having a second phase, and ... | 04/25/2006 |
| 7023463 | Method and apparatus for printing images from digital image data An apparatus for printing images from digital image data onto a light sensitive medium disposed at an image plane which comprises a control logic processor capable of controlling the operation of the apparatus for printing based on the digital image data. An image f... | 04/04/2006 |
| 6999221 | Bimorphic polymeric photomechanical actuator A bimorphic polymeric photomechanical actuator, in one embodiment using polyvinylidene fluoride (PVDF) as a photosensitive body, transmitting light over fiber optic cables, and controlling the shape and pulse duration of the light pulse to control movement of the ac... | 02/14/2006 |
| 6995499 | Micro piezoelectric actuator and method for fabricating same There is provided a micro piezoelectric actuator, an optical switching device including the micro piezoelectric actuator and a method for fabricating the same. The optical switching device includes a mirror, a first actuator for adjusting the tilt angle of the mirro... | 02/07/2006 |
| 6987598 | Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using ... | 01/17/2006 |
| 6967791 | Illumination systems and methods System and method for illuminating a target area with a desired illumination pattern. According to preferred embodiments of the invention, a cartridge-engaging assembly may be positioned adjacent a data cartridge, light may be emitted from at least one light source ... | 11/22/2005 |
| 6962419 | Micromirror elements, package for the micromirror elements, and projection system therefor In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimi... | 11/08/2005 |
| 6963441 | Deactivated electro-optic material and method of forming the same An electro-optically deactivated transmissive material comprises a plurality of chemicals which are sufficient, in combination, to enable formation of an electro-optic material having an index of refraction that is responsive to an electric field. The chemicals are ... | 11/08/2005 |
| 6949872 | Electro-optic filter for plasma display panel A plasma display panel includes a filter for controlling a light transmittance by selectively diffracting a light emitted from a discharge cell of a plasma display panel on the basis of an electric signal. A luminance efficacy can be enhanced by using the low-priced... | 09/27/2005 |
| 6897995 | Method and device for variable optical attenuator A variable optical modulator for optical communication systems using a tunable dynamic grating comprises a gel or membrane layer attached adjacent to a prism communicating light to/from the optical communication system. A substrate has a plurality of individually ad... | 05/24/2005 |
| 6765670 | Spectrometer module and applications thereof The present invention relates to a spectrometer module comprising an input, for receiving an incoming optical signal, a variable differential group delay (DGD) element, for applying a variable birefringence retardation to said incoming optical signal, and a detector... | 07/20/2004 |
| 6700694 | Ferro-electric azimuth rotator An electrically controllable azimuth optical rotator (10) includes a first quarterwave plate (16) for receiving a first beam of electromagnetic energy (22) having a first arbitrary polarization state, and outputting a second beam (122) in response to the ... | 03/02/2004 |
| 6646782 | Solid-state surface plasmon light valve and tunable filter An all solid-state light valve and tunable filter that uses color-selective absorption at a metal-dielectric interface by surface plasmons. The solid-state surface plasmon light valve and tunable filter comprises a substrate, a bottom electrode, a solid-s... | 11/11/2003 |
| 6614574 | Total internal reflection light modulating microstructure devices A light modulating switch (210) including a switching element (218) having a first portion (226) of electro-optic material to which first and second electrodes (213, 224) are associated. A second portion (228) is composed of material having an index of re... | 09/02/2003 |
| 6561703 | Light shutter device In a light shutter device in which multiple light shutter elements are located on a substrate made of PLZT, and the ON/OFF control of light is carried out by having an electrical field operate on each light shutter element from a pair of electrodes, the c... | 05/13/2003 |
| 6535321 | Thin film ferroelectric light modulators A solid state device used to modulate the intensity of reflected or transmitted light by modulating with an external voltage the optical thickness of a thin film ferroelectric placed in an etalon cavity is disclosed. The device is constructed by selecting... | 03/18/2003 |
| 6525867 | Fast response micro-modulator arrays Micro fabricated arrays of optical modulators of both a surface electrode and machined mesa nature where the small structure size and low capacitance electrical connections permit each modulator element to be individually electrically addressed thus provi... | 02/25/2003 |
| 6522456 | Dynamic optical filter An apparatus and method for filtering an optical input is disclosed. In an illustrative embodiment, an optical input is split into polarization components along separate paths. The polarization components are then fed into a first electro-optic device tha... | 02/18/2003 |
| 6515791 | Active reflection and anti-reflection optical switch An active, optical, piezoelectric actuated modulator allows switching between a reflecting state and an anti-reflecting state. The modulator, or switch, is based on the precise controlling of an air gap between a thin film membrane and a substrate. The th... | 02/04/2003 |
| 6498672 | Electro-optical device and projection display device including the same An electro-optical device is provided having an electro-optical panel and a case member, the electro-optical panel including a pair of substrates and a transparent member joined to at least one substrate of the pair of substrates, forming a structure whic... | 12/24/2002 |
| 6414781 | Electro-optical device and projection display device including the same An electro-optical device is provided having a structure which, in particular, allows the device to be made smaller and thinner, and the heat-dissipation capability to be increased in order to prevent overheating. A positioning section which accommodates ... | 07/02/2002 |
| 6411422 | Thin film ferroelectric light modulators A solid state device used to modulate the intensity of reflected or transmitted light by modulating with an external voltage the optical thickness of a thin film ferroelectric placed in an etalon cavity is disclosed. The device is constructed by selecting... | 06/25/2002 |
| 6404538 | High-speed electro-optic modulator An optical modulator is provided to control the intensity of a transmitted or reflected light. In a transmission mode, a separator splits arbitrarily polarized light into two polarization rays and one is made to travel a separate path from the other. A re... | 06/11/2002 |
| 6404537 | Polarization transformer A polarization transformer includes at least one plate of transparent polycrystalline material which has an optical axis oriented perpendicular to a propagation direction of incident radiation having a first polarization state. The plate includes electrod... | 06/11/2002 |
| 6381060 | Total internal reflection light modulating microstructure devices A light modulating switch (210) including a switching element (218) having a first portion (226) of electro-optic material to which first and second electrodes (213, 224) are associated. A second portion (228) is composed of material having an index of re... | 04/30/2002 |
| 6369936 | Pixel intensity control in electro-optic modulators A laser imager comprises a modulator with an array of electrodes to control picture elements individually or by groups to produce images on a recording plane. The light intensity of each picture element or group of elements is determined by electrical pot... | 04/09/2002 |
