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| Number | Title | Issue Date |
| 6778326 | Combined heat filter and condenser lens, a projection type apparatus using such, and a method for fabricating it An optical component including: a substrate made from heat absorptive glass having a front surface and a rear surface, at least one of said surfaces being a crenulate surface having optical power. ... | 08/17/2004 |
| 6538815 | Bi-directional optical circulator and applications thereof A method and apparatus of bi-directional optical circulation are provided wherein, for a plurality of optical input/output ports including a certain logical sequence, light of a first set of lights inputted to any port is outputted from the logical next p... | 03/25/2003 |
| 6491445 | Crimp plug for a connector The invention is directed to a crimp plug having a front portion, a center portion, and a securing portion. A conductor receiving cavity extends from the front e into the center portion. A stop shoulder within the center portion provides transition from t... | 12/10/2002 |
| 6490087 | Optical systems for reflective LCD's Optical systems for use with reflective LCDs (8,9,32,34,36) are provided. The systems include a polarization beam splitter (5) which can be composed of polarization beam splitting cubes (26) having sheet polarizers (30) and/or half wave plates (28) at the... | 12/03/2002 |
| 6485151 | Motorcycle mirror providing rider concurrent viewing of road to the side and immediately to the rear of motorcycle A motorcycle rear view mirror assembly for addition to motorcycles and like vehicles providing a view of both the rear sides, and directly behind and adjacent to the rear of the motorcycle which will increase the safety of the operator when changing lanes... | 11/26/2002 |
| 6483641 | Apparatus and methods relating to spatially light modulated microscopy Apparatus and methods relating to microscopes having specific control of the light that contacts a sample and/or a light detector, such as the eye of the user, a charge couple device or a video camera. The improved control includes enhanced, selective con... | 11/19/2002 |
| 6483613 | Reflective display device and a light source for a display device A reflective liquid crystal display device (LCD) (40) includes: a substrate (60), a reflecting layer (61), a liquid crystal layer (62), an electrode layer (63), a color filter layer (64), an upper substrate (65), and a polarizer (66). The reflective liqui... | 11/19/2002 |
| 6480333 | Diffractive optical elements on non-flat substrates using electron beam lithography The present disclosure describes a technique for creating diffraction gratings on curved surfaces with electron beam lithography. The curved surface can act as an optical element to produce flat and aberration-free images in imaging spectrometers. In addi... | 11/12/2002 |
| 6476969 | Transparent functional membrane containing functional ultrafine particles, transparent functional film, and process for producing the same An antireflection film containing a transparent substrate film, a hard coat layer on the substrate film, and first and second refractive index layers on the hard coat layer. The hard coat layer has a refractive index higher than the refractive index of th... | 11/05/2002 |
| 6473232 | Optical system having a diffractive optical element, and optical apparatus An optical system includes a diffractive optical element having a diffraction grating provided, on a lens surface having a curvature, in a concentric-circles shape rotationally-symmetrical with respect to an optical axis. The sign of the curvature of the ... | 10/29/2002 |
| 6469827 | Diffraction spectral filter for use in extreme-UV lithography condenser A condenser system for generating a beam of radiation includes a source of radiation light that generates a continuous spectrum of radiation light; a condenser comprising one or more first optical elements for collecting radiation from the source of radia... | 10/22/2002 |
| 6469831 | Multibeam optical system A multibeam optical system that employs a laser source emitting a laser beam, a diffractive beam-dividing element that diffracts the laser beam emitted from the laser source to be divided into a plurality of diffracted beams exiting at different diffracti... | 10/22/2002 |
| 6467915 | Deformable mirror, in particular for a laser beam material machining apparatus In the case of a deformable mirror (11) with a mirror plate (13) which is in glass form in particular for high laser frequencies and an axial actuator (20) which concentrically engages the rear side of the mirror surface (17)--with a reduced actuator stro... | 10/22/2002 |
| 6466371 | Diffractive lens with gratings modified to offset effects caused by holding the lens at an angle with respect to a light source A diffractive lens constructed in accordance with the invention comprises a set of bands such that the diffractive gratings in each band are modified. This is done to ensure that even if the lens is tilted (e.g. to prevent light from reflecting off the le... | 10/15/2002 |
| 6464364 | Deformable curvature mirror A deformable curvature mirror capable of controlled deformation by applying electrical voltages to electrode segments on the back of the mirror. Two plates of an electro-restrictive material, such as PZT or PMN, are jointed together with at least one cond... | 10/15/2002 |
| 6462873 | Polarizing beam splitter A polarizing beam splitter is described that is optimised not for the maximum possible extinction ratio, but to provide a wide acceptance angle over substantially the whole visible range while still providing an adequate extinction ratio for use in specif... | 10/08/2002 |
| 6462874 | Optical systems employing stepped diffractive surfaces Optical systems employing stepped diffractive surfaces (13) are provided. Ray tracing through such systems is performed using the grating equation to represent the stepped diffractive surface (SDS). In this way, the SDS can be used to correct a variety of... | 10/08/2002 |
| 6456434 | Single crystal two-beam polarizing prism without angular dispersion and method of manufacturing thereof A single-crystal polygonal polarization prism has at least two pairs of mutually parallel prism planes. The prism is characterized by the fact that the e-beam is reflected within the prism with even number of reflections, whereby after the exit from the p... | 09/24/2002 |
| 6452698 | Transparent and semitransparent diffractive elements, particularly holograms and their making process Transparent and semitransparent diffractive elements, particularly holograms with a diffractive pattern created at least in one of two following layers with different index of refraction: a transparent bearing layer (1) from polymer or copolymer having in... | 09/17/2002 |
| 6452725 | Thermally stable etalon wavelength interleaver-multiplexer A thermally stable etalon filter includes a pair of spaced apart mirrors defining a Fabry-Perot cavity and an optical medium disposed in the cavity. The optical medium is comprised two optically transparent materials, one having a coefficient of thermal e... | 09/17/2002 |
| 6449094 | Optical system including diffraction optical element An optical system including a diffraction optical element and for forming an image of an object by light having a given wavelength width includes at least one diffraction optical element and a diffraction light selection element for transmitting a diffrac... | 09/10/2002 |
| 6449079 | Deflectable micro-mirror An oscillatory micromirror having a cantilevered mirror surface is joined using at least one torsion axis formed by at least one torsion beam mounted on the mirror surface, to a support member that surrounds at least portions of the mirror surface. There ... | 09/10/2002 |
| 6449097 | Diffraction grating for wavelength division multiplexing/demultiplexing devices An improved diffraction grating for wavelength division multiplexing/demultiplexing devices is disclosed. The improved diffraction grating has a glass substrate, a polymer grating layer located adjacent to the glass substrate, and a metal coating layer lo... | 09/10/2002 |
| 6449412 | Fiber optic ribbon interconnect cable A fiber optic cable comprising an optical ribbon (20), a jacket (40), and a buffer material (30) between the optical ribbon (20) and the jacket (40). Buffer material (30) includes at least one volume of buffer material defining a stress-cushioning zone (3... | 09/10/2002 |
| 6445502 | Variable blazed grating In one aspect of the invention, an apparatus operable to provide optical signal processing includes an inner conductive layer including an at least substantially conductive material and a plurality of at least partially reflective mirror strips disposed o... | 09/03/2002 |
| 6445500 | Polarization luminaire and projection display A polarization luminaire is disclosed having a light source, a system of the optical integrator, a polarized light splitting device for splitting a light emitted from the light source into two kinds of polarized lights whose polarization directions are pe... | 09/03/2002 |
| 6441962 | Optical filter with little variation in chromatic dispersion An optical filter has little variation in chromatic dispersion over its passband, the filter being constituted by a Bragg grating whose pitch varies as a function of distance along the filter with a change in the sense of its concavity. The filter also pr... | 08/27/2002 |
| 6437916 | Strain-stabilized birefringent crystal The invention provides an optical system for use in a stable, temperature-insensitive birefringent crystal interferometer (BCI). The optical system includes a first block of light transmissive birefringent material having an input port and an output port,... | 08/20/2002 |
| 6437887 | Optical logic device and optical memory device An optical logic device comprises a dielectric block arranged such that a driving light is incident on one plane thereof at a total reflection critical angle through an interior thereof, a metallic film formed over the one plane of the dielectric block, a... | 08/20/2002 |
| 6422706 | Apparatus and method for positioning a mirror in a motor vehicle to ensure correct coverage of a critical field of view A mirror assembly for ensuring correct coverage of a critical field of view. Reference points (e.g., markings, light sources, images of objects) are used for correct mirror adjustment. In one embodiment, dots are located on the center of the mirror and on... | 07/23/2002 |
| 6424438 | Apparatus and method for realizing all-optical NOR logic device An apparatus and method for realizing an all-optical NOR logic device includes a distributed feedback laser diode and a tunable laser diode respectively generating two pump signals of different wavelengths. The apparatus also includes a pulse generator an... | 07/23/2002 |
| 6421178 | Device and method for transforming optical beams The invention concerns a device for optically transforming at least a radiation beam having a width extending in the plane X-Y. The device including optical elements provided with optically active interfaces, arrange in the radiation path. So as to obtain... | 07/16/2002 |
| 6417968 | Diffractive surface pattern A surface pattern is made up of surface elements (1 to 7) which are arranged in a mosaic-like fashion and which have microscopic relief structures. The surface elements (2 to 6) which are divided at least into first and second surface portions (8; 9) have... | 07/09/2002 |
| 6416192 | Trailer tow mirror A mirror assembly has a pair of telescoping tubular supports extending between a support base and a mirror head to provide adjustment of the mirror head toward and away from the support base. Friction shoes within the tubular supports releasably hold such... | 07/09/2002 |
| 6417967 | System and method for efficient illumination in color projection displays An illumination system for a color projection display. In one embodiment a broad spectrum light source illuminates a multilevel optical phase element which disperses the broad spectrum light from the light source by diffraction. A display having a number ... | 07/09/2002 |
| 6412959 | Rear view mirror device having displayer or monitor A rear view mirror device of a vehicle has a mirror member disposed in front of a housing which is to be secured onto a vehicle. A displayer is disposed in the housing and disposed behind the mirror member and may be seen through the mirror member when th... | 07/02/2002 |
| 6411438 | Polarization luminaire and projection display A polarization luminaire is disclosed having a light source, a system of the optical integrator, a polarized light splitting device for splitting a light emitted from the light source into two kinds of polarized lights whose polarization directions are pe... | 06/25/2002 |
| 6407831 | Coherent interaction of optical radiation beams with optical-electronic materials of generalized crystal symmetry A method for optimizing the interaction of a resonant material having generalized crystal symmetry with a beam or beams of radiation. The invention includes determining a special direction relative to the axes of crystal symmetry of the material and polar... | 06/18/2002 |
| 6404554 | Optical phase grating low pass filter There is provided an optical low pass filter passing only a lower spatial frequency using a phase grating and the structure of the grating. The optical low pass filter utilizes the two-dimensionally arranged phase grating for the purpose of removing an im... | 06/11/2002 |
| 6400509 | Apparatus and method for the reduction of polarization sensitivity in diffraction gratings used in fiber optic communications devices A diffraction grating for use in multiplexing and demultiplexing optical signals in optical communication systems having reduced polarization sensitivity has a plurality of grooves including reflective step surfaces and transverse riser surfaces separated... | 06/04/2002 |
