Patents Examined by Audrey Chang
  • Patent number: 6844973
    Abstract: A plane diffraction grating based on surface normal rotation according to the present invention is designed so that the profile of the grooves at a radial area is determined depending on a rotational position of the area about a rotational center defined as a foot of the rotational axis on the surface of the plane diffraction grating. An optical system such as a spectrometer or a monochromator according to the present invention uses such a plane diffraction grating, and requires a special arrangement. The optical system includes: a plane diffraction grating as described above; a mechanism for rotating the plane diffraction grating about the rotational axis; an incidence optical system for casting a converging beam of light on a point of the surface of the plane diffraction grating, where the point is set apart from the rotational center.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: January 18, 2005
    Assignees: Japan Atomic Energy Research Institute, Shimadzu Corporation
    Inventors: Masato Koike, Kazuo Sano, Yoshihisa Harada
  • Patent number: 6844963
    Abstract: The present invention provides various embodiments of a double-resonance-absorption microscope which realizes a super-resolution by using double resonance absorption. In particular, a double-resonance-absorption microscope includes a light source for a pump light of a wavelength ?1 which excites a sample molecule to a first electronic excited state from a ground state, a light source for an erase light of a wavelength ?2 which excites the sample molecule to a second electronic excited state or a higher excited state from the first electronic excited state, and an overlap component for partially overlapping irradiating areas of the pump light and the erase light with each other. An emission area upon deexcitation of the sample molecule to the ground state from the first electronic excited state is partially inhibited by irradiating the pump light and the erase light through the overlap means.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: January 18, 2005
    Assignees: Olympus Optical Co., Ltd., Japan Science and Technology Agency
    Inventors: Yoshinori Iketaki, Mashaaki Fujii, Takeshige Omatsu, Osamu Sato, Kimiyoshi Yamamoto
  • Patent number: 6843575
    Abstract: Even when a stay is mounted to a mounting surface with tilting angle different according to types of vehicles, a predetermined or more tilting range of the mirror assembly can be obtained, thereby securing a rear field of view. As a result, since an inside mirror can be for general-purpose use of types of vehicles having a mounting surface with different tilting angles, the inside mirror does not have to be designed and manufactured according to each type of vehicles, thereby lowering the cost of the inside mirror.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: January 18, 2005
    Assignee: Ichikoh Industries, Ltd.
    Inventor: Kenichi Wachi
  • Patent number: 6843571
    Abstract: The invention relates to methods of making a master and replicas thereof including tooling and retroreflective sheeting. The invention further relates to the corresponding master, tooling and in particular retroreflective sheeting. The method comprises forming V-shaped grooves in a substrate (e.g. metal plate) wherein the intersections of three grooves form cube-corner elements. The cube-corner elements are substantially the same size throughout the array. The master as well as corresponding tooling and sheeting preferably have an average groove spacing within the range of about 0.0005 inches (0.0127 mm) to about 0.007 inches (0.1778 mm) throughout the array and more preferably an average groove spacing of less than about 0.004 inches (0.1016 mm).
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: January 18, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Nelson D. Sewall, Kenneth L. Smith, David W. Meitz, Madeleine B. Fleming, John C. Nelson
  • Patent number: 6844971
    Abstract: A wire grid polarizer (100) for polarizing an incident light beam (130), comprising a substrate (505) having a first surface (410) and a second surface (510); and a first array of parallel, elongated wires disposed on the first surface (410). Each of the wires are spaced apart at a grid period less than a wavelength of the incident light; and a second array of parallel, elongated wires disposed on said second surface (420) where the second array of wires are oriented parallel to the first array of wires.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: January 18, 2005
    Assignee: Eastman Kodak Company
    Inventors: Barry D. Silverstein, Andrew F. Kurtz, Xiang-Dong Mi
  • Patent number: 6842574
    Abstract: The car industry increasingly uses plastic optical fibers whose protective sheathing (4) is made of a polyamide. As unmodified PA poorly adheres to the fluoropolymers often used as the material for the fiber cladding (3), the plastic optical fiber (2, 3) moves in relation to the protective sheathing (4) when the temperature varies. To suppress this effect referred to as “pistoning”, the connectors and holders of the optical fibers must apply very large clamping forces to the protective sheathing (4) and the plastic optical fiber (2, 3) arranged therein, resulting in an increased signal attenuation. The use of a modified PA can clearly improve the adherence of the protective sheathing (4) to the cladding (3) of a plastic optical fiber which is made of a fluoropolymer.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: January 11, 2005
    Assignee: EMS-Chemie AG
    Inventors: Hans-Matthias Horn, Joachim Schaefer, Ilona Schmidt, Helmut Thullen, Volker Eichhorn, Thomas Wutke, Georg Stoeppelmann
  • Patent number: 6839177
    Abstract: A holographic data storage medium having an anti-reflective coating is described. The anti-reflective coating can be made to reduce reflectivity for S-polarized light over a wide range of incident angles. Moreover, the anti-reflective coating can be made to have a sufficiently high transmittance for the S-polarized light. The coating may improve performance of the holographic data storage medium, and can facilitate higher storage densities than can be achieved without the coating.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: January 4, 2005
    Assignee: Imation Corp.
    Inventor: Frank E. Aspen
  • Patent number: 6839171
    Abstract: A film for releasing a polarizing plate, which has excellent transparency, silicone adhesion and processing work efficiency, and a small orientation angle, contains little optical foreign matter and is hardly scratched. This film comprises a coextruded polyester film comprising at least two layers and a silicone adhesive layer. The coextruded polyester film has a haze value of 4% or less and an orientation angle of 10° C. or less and contains 5 or less flyspecks having a long diameter of 90 ?m or more per 0.3 m2.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: January 4, 2005
    Assignee: Teijin Limited
    Inventors: Kei Mizutani, Tetsuo Ichihashi
  • Patent number: 6833949
    Abstract: The invention provides coated optical lithography elements and methods of coating optical elements, and particularly optical photolithography elements for use in below 240 nm optical photolithography systems utilizing vacuum ultraviolet light (VUV) lithography wavelengths no greater than about 193 nm, such as VUV projection lithography systems utilizing wavelengths in the 193 nm or 157 nm region. The optical devices manipulate vacuum ultraviolet lithography light less than 250 nm utilizing a deposited silicon oxyfluoride film. The deposited silicon oxyfluoride optical coating assists in the manipulation of incident light and protects the underlying optical materials, layers, and surfaces.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: December 21, 2004
    Assignee: Corning Incorporated
    Inventors: Robert L. Maier, Lisa A. Moore, Charlene M. Smith
  • Patent number: 6833952
    Abstract: A stereoscopic display apparatus 20 is employed in combination with an image transmission section 10. A case 1 includes a half-mirror 3, a visual field lens 4 and polarizers 22L, 22R therein, and an observation port 23 with a hood is defined in the case 1. A band 25 to be worn on a viewer's head is disposed in the exterior of the case 1. Both of the polarizers 22L and 22R are so designed as to display the stereoscopic images for the right and left eyes on the basis of data transmitted from the image transmission section 10, respectively, and the image lights are guided to the viewer's eyes through the half-mirror 3 and the visual field lens 4. The stereoscopic display apparatus 20 is of the head mount type that guides the images for the right and left eyes projected onto one display screen which is formed of the half-mirror 3 to the right and left eyes.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: December 21, 2004
    Assignee: Scalar Corporation
    Inventor: Masao Yamamoto
  • Patent number: 6831764
    Abstract: It is an object of this invention to provide a light scanning device capable of suppressing scanning line bending to a low level, which is caused by the arrangement error of a single-element lens serving as an imaging optical element, and an image forming apparatus using the device. In order to achieve the object, according to this invention, an imaging optical system is formed from a single-element lens, and the sectional shapes of the incident and exit surfaces in the main scanning direction are non-arcuated, and the power in the sub scanning direction substantially concentrates on the exit surface. The non-arcuated shape (curvature) of the exit surface in the main scanning direction is so determined as to make the magnification in the sub scanning direction uniform.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: December 14, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidekazu Shimomura, Hiroshi Sato, Manabu Kato, Keiichiro Ishihara
  • Patent number: 6822774
    Abstract: An optoelectronic device for detecting labels with defined contrast patterns includes a transmitter for emitting light rays, a receiver for receiving light rays, as well as a deflection unit with a motor-driven polygonal mirror wheel. The transmitted light rays and the received light rays are guided over the polygonal mirror wheel in order to scan the labels and reassemble the label-reflected received light rays, respectively. The device furthermore is provided with an evaluation unit for evaluating electrical receiving signals converted from received light rays at the receiver. The motor for driving the polygonal mirror wheel has a drive shaft and is provided with a magnet that is an injection-molded part, which is formed onto the shaft and operates jointly with at least one coil.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: November 23, 2004
    Assignee: Leuze Electronic GmbH & Co.
    Inventors: Jörg Wörner, Armin Claus
  • Patent number: 6819488
    Abstract: An apparatus for creating three-dimensional images is disclosed. The device has at least four mirrors, arranged in an inner set and an outer set. An enclosure, preferably cylindrical in shape, houses the mirrors and alignment apparatus and can be placed in three different positions. The camera takes two-dimensional photographs or operates in two modes of three-dimensional photography: forward looking and backward looking. This device is preferably attached to a digital camera. The device can also be used when the digital camera is attached to a hand held personal computing device, for example a Handspring™ Visor™ computer made by Handspring, Inc. In a preferred embodiment of the invention, there are six mirrors, including four inner mirrors and one set of outer mirrors.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: November 16, 2004
    Inventor: Pieter O. Zanen
  • Patent number: 6819489
    Abstract: Apparatus and method for displaying three-dimensional images with a display device. A blocking grid is positioned between a display device and a viewer, and a drive system oscillates the blocking grid in accordance with the display of a plurality of images. Each image is aligned with the grid and is structured such that each eye of the viewer sees only a displayed portion of a displayed image intended for that eye, thereby creating a three-dimensional effect.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: November 16, 2004
    Assignee: International Business Machines Corporation
    Inventor: Richard H. Harris
  • Patent number: 6816294
    Abstract: Laser beam positioners (300, 340) employ a steering mirror (236, 306) that performs small-angle deflection of a laser beam (270) to compensate for cross-axis (110) settling errors of a positioner stage (302). A two-axis mirror is preferred because either axis of the positioner stages may be used for performing work. In one embodiment, the steering mirror is used for error correction only without necessarily requiring coordination with the positioner stage position commands. A fast steering mirror employing a flexure mechanism and piezoelectric actuators to tip and tilt the mirror is preferred in semiconductor link processing (“SLP”) applications. This invention compensates for cross-axis settling time, resulting in increased SLP system throughput and accuracy while simplifying complexity of the positioner stages because the steering mirror corrections relax the positioner stage servo driving requirements.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: November 9, 2004
    Assignee: Electro Scientific Industries, Inc.
    Inventors: Mark Unrath, Kelly Bruland, Ho Wai Lo, Stephen Swaringen
  • Patent number: 6813054
    Abstract: The invention addresses a micro-electro-mechanical (MEMS) device, or an array of such devices, for use in an optical communication system and a method of manufacture therefore. An embodiment of the device includes a moveable element support structure, a moveable element and torsional members that couple the moveable element support structure and the moveable element and allow the moveable element to gimbal with respect to the support structure. The inventive device includes torsional members that are substantially free of corrosion thereby producing a device with improved response characteristics. The method includes using an etchant that substantially inhibits corrosion of the torsional members.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: November 2, 2004
    Assignees: Agere Systems Inc., Lucent Technologies Inc.
    Inventors: Vladimir A. Aksyuk, Arman Gasparyan, Mark A. Paczkowski
  • Patent number: 6813075
    Abstract: Therefore, it is an object of the present invention in the slide mount holder section, so that a rectangular stereo slide mount and a stereo slide mount having circular-arc left and right opposite ends can be smoothly loaded and positioned, without using any adapter.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: November 2, 2004
    Inventor: Minoru Inaba
  • Patent number: 6813077
    Abstract: A method for fabricating an integrated optical isolator includes depositing a wire grid material on a magneto-optical substrate and depositing a resist film on the wire grid material. The method further includes bringing a mold with a wire grid pattern on contact with the resist film and compressing the mold and resist film together so as to emboss the wire grid pattern in the resist film. The method further includes transferring the wire grid pattern in the resist film to the wire grid material on the magneto-optical substrate by etching.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: November 2, 2004
    Assignee: Corning Incorporated
    Inventors: Nicholas F. Borrelli, David G. Grossman, Kenjro Hasui, Tamio Kosaka, Nick J. Visovsky
  • Patent number: 6813078
    Abstract: A polarizer having good durability that is dyed by iodine, and is given boric acid processing, and moreover contains zinc without generating fault by deposit of boric acid or zinc, may be produced by a process of producing, comprising the steps of: conducting a dyeing processing by iodine to a non-stretched poly vinylalcohol film; conducting an uniaxial stretching processing and a boric acid processing; subsequently conducting a zinc impregnation processing; and furthermore, conducting an iodine ion impregnation processing.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: November 2, 2004
    Assignee: Nitto Denko Corporation
    Inventors: Seiichi Kusumoto, Hisashi Mihara, Youichirou Sugino, Yuuji Saiki, Senri Kondou, Takashi Shouda
  • Patent number: 6813410
    Abstract: In an optical switch with a mirror, the inclination angle of which varies depending on an application voltage, a low-frequency signal is superimposed on the application voltage, and a low-frequency component is detected in output light reflected on the mirror. Then, an application voltage is increased/decreased based on the detected low-frequency component.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: November 2, 2004
    Assignee: Fujitsu Limited
    Inventor: Yoichi Oikawa