Patents Examined by John K. Corbin
  • Patent number: 4830465
    Abstract: Irreversible optical recording media record information through local alteration of the optical properties of a recording layer on exposure to light.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: May 16, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Arend Werner, Hartmut Hibst, Helmut Barzynski
  • Patent number: 4830475
    Abstract: When a zoom lens system is focused by moving a lens other than the foremost lens group, the advancing amount of the focusing lens varies according to the variation in the focal length even whyen focusing on an object at the same object distance. When a zoom lens system is zoomed to a certain focal length, the object distance and advancing amount of the focusing lens has a relationship expressed by a function resembling a logarithmic function. The present invention enables one to focus a zoom lens system using only one movement amount curve by arranging to move the focusing lens along the movement amount curve, utilizing different portions of the movement amount curve according to the amount of zooming.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: May 16, 1989
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shozo Ishiyama, Tadashi Kojima, Makoto Banno
  • Patent number: 4830482
    Abstract: An optical device for focusing images on the retinas of the left and right eyes of a human user, containing left and right corrective lenses each having a light receiving surface and first and second lens segments of different focal lengths for focusing near and far objects respectively. The boundary between the first and second segments of each of the lenses extends in the same direction and parallel to the light receiving surface, and the lenses are supported and oriented with respect to the eyes of the user so that the boundary is substantially perpendicular to a line connecting the eyes of the user, and so that each first lens segment occupies a nasal position with respect to the user's eyes and each second lens segment occupies a temporal position with respect to the user's eyes.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: May 16, 1989
    Inventor: Howard L. Resnikoff
  • Patent number: 4828346
    Abstract: A transparent article comprising a base, at least four coated layers, and a top protective layer is disclosed. The coated layers include a first dereflecting region, a transparent layer of silver or other metal, and a second dereflecting region comprising a layer of titanium dioxide and a layer of another dielectric mater. A titanium dioxide layer may also be a component of the first dereflecting region. Each dereflecting region that includes a titanium dioxide layer also comprises a layer of a transparent oxide or other dielectric material having an index of refraction intermediate between about 2.7, the approximate index of titanium dioxide, and the index of the nearby base or top layer, respectively. The intermediate index material is preferably zinc oxide because this material can be relatively quickly and inexpensively deposited by reaction sputtering. Also disclosed is a method for depositing the coated layers by sputtering and reactive sputtering of titanium and silver, zinc or other materials.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: May 9, 1989
    Assignee: The BOC Group, Inc.
    Inventors: Donald V. Jacobsen, Roy L. Bernardi, Francis W. Ryan
  • Patent number: 4828363
    Abstract: A liquid crystal device having a plurality of pixels defined on a liquid crystal layer by a plurality of first and second electrodes that are electrically connected to non-linear devices, the first electrode and non-linear devices being provided on the inside of a first substrate, and the second electrodes being provided on the inside of a second substrate. In order to provide a flat underlying surface for the first electrodes while enabling the first electrodes to overly the non-linear devices (and with them the effective areas of the pixels), an insulating layer is provided under the first electrodes immediately adjacent to the non-linear devices.
    Type: Grant
    Filed: September 3, 1987
    Date of Patent: May 9, 1989
    Assignee: Semiconductor Energy Laboratory, Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 4828378
    Abstract: A night vision viewing system, suitable for mounting on an observer's headgear (11), wherein light rays from a forward scene pass to the observer's eye (E) via a path comprising a forward looking objective lens (23), an inclined reflector (35) which directs the rays passing through the objective onto an outwardly sideways looking input face of an image intensifier (31), and a fibre optic stub (33) which directs rays from the output face of the intensifier onto a second reflector (27) which directs the rays downwardly into an eyepiece (21) which is in the observer's forward line of sight. The eyepiece incorporates an internal surface (37) having both light reflective and light transmissive properties which directs rays entering the eyepiece from the intensifier to the observer's eye. The fibre optic stub serves to effect rotation of the intensified image to present an intensified image of correct orientation to the observer.
    Type: Grant
    Filed: September 15, 1987
    Date of Patent: May 9, 1989
    Assignee: GEC-Marconi Limited
    Inventor: Stafford M. Ellis
  • Patent number: 4828374
    Abstract: An Albada type inverted Galileo finder which is suitable foruse with a compace lens shutter camera, which is small in size, and which is visible without occurrence of any ghost not only in an object but a finder frame.If lenses are disposed in order of negative, positive and positive from the side of an object and a reflecting surface of an Albada system is a surface on the side of the object of a positive lens, a finder which involves no ghost and is advantageous for correction of aberrations can be obtained. Furthermore, if the on-the-axis thickness of each lens is restricted to thereby provide a plastic lens, precision of molding can be improved.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: May 9, 1989
    Assignee: Konica Corporation
    Inventors: Akira Ishisaka, Kohei Ota
  • Patent number: 4828360
    Abstract: The coils of the stepping motor are disposed on the outer periphery of stepped section of a stationary tube section of the lens assembly in a manner to define a stator yoke. The inner surface of the stepped section is provided with a helicoid gear which cooperates with a corresponding gear formed on the outer periphery of the rotatable front tube section of the lens assembly. The rotor magnet is secured on the inner periphery of a rearwardly extending flange-like section which encloses the stator yoke.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: May 9, 1989
    Assignee: Sony Corporation
    Inventor: Shigehisa Maruyama
  • Patent number: 4828345
    Abstract: A selective light transmissible film or sheet having excellent anti-fogging properties, produced by forming a thin film of a metal and/or a metal compound having transparency and infrared ray reflective characteristics, on the surface of one side of a cellulose derivative film or sheet of which the surface of the other side is saponified with an alkaline aqueous solution, or on the surface of one side of a cellulose derivative film or sheet of which both surfaces are saponified with an alkaline aqueous solution.
    Type: Grant
    Filed: July 9, 1987
    Date of Patent: May 9, 1989
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Shuji Kitamura, Kiyohiko Nakae, Kozo Kotani, Yoshihiro Nakatsuji
  • Patent number: 4828375
    Abstract: It is a lens comprising three elements for a scanning device; the lens is particularly for providing a linear scanning. A beam enters the lens from its front focus by rotating a constant angular velocity, will become a beam in parallel with the axis of the lens and moving at a contant speed when passing through the lens; the distance H between the beam and the axis of the lens, the contained angle .theta. between the incident beam and the axis of the lens have the relation of H=KF.theta., in which F is the focal length of the lens, and K is a constant.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: May 9, 1989
    Assignee: Industrial Technology Research Institute
    Inventors: Yueh-Joy Dong, Chin-Hen Fang
  • Patent number: 4828373
    Abstract: An aspherical single lens of compact construction and good image-forming performance which is obtained by shaping the first surface into such an aspherical configuration the curvature radius of which increases gradually toward the periphery from the center while satisfying the following conditions:0.42<q<1.3 (a)and0.5(f-1)<d<1.2f (b)wherein, q=-r.sub.1 /r.sub.2, r.sub.1 is the curvature radius in the vicinity of the optical axis of the first surface, r.sub.2 is the curvature radius of the second surface, f is the focal length and d is the thickness of the lens.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: May 9, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigeyuki Suda, Masayuki Suzuki
  • Patent number: 4828347
    Abstract: A drive with a D.C. motor is provided for the oscillating deflection of a mirror for the line by line scanning of pictures. It is supplied with alternating current so that the rotor executes a harmonic oscillation. To fix the zero position or the oscillation mean position, a magnet with an outwardly oriented magnetic pole is fixed to the mirror carrier. Another magnet is fixedly disposed on the housing thus that a reciprocal pole to the pole on the mirror carrier is opposite to it. Thus it is not necessary to overcome a force increasing proportionally to the deflection which also would interfere with the oscillation, as in the known zero position by means of a torsion bar.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: May 9, 1989
    Inventor: Heinz Keiser
  • Patent number: 4826285
    Abstract: Method of producing an enhanced output correlation signal from an image matching correlator includes the steps of further transforming data representing an input image to produce a transformed image, multiplying the transformed image by at least one reference filter function representing a reference image to be compared with the input image to produce a product signal, inverse fourier transforming the product signal to product the output correlation signal, and introducing phase distortions within the reference filter function, sufficient to greatly enhance peak values and narrow the area of the correlation peak of the output correlation signal. The method may utilize optical or digital electronic correlation and transformation.
    Type: Grant
    Filed: September 24, 1987
    Date of Patent: May 2, 1989
    Inventor: Joseph L. Horner
  • Patent number: 4826271
    Abstract: A rotational polygon mirror and a method of manufacture thereof comprising a base member having a polygonal pole-like portion, the base member being formed of a relatively light-weight material which can be easily molded into a complicated shape, and a coating film which is provided on one or more side surfaces of the polygonal pole-like portion and on which a reflecting mirror surface is formed, the coating film being of at least one layer structure.
    Type: Grant
    Filed: August 22, 1985
    Date of Patent: May 2, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kimio Takahashi, Norihisa Saito, Kunio Takada
  • Patent number: 4826305
    Abstract: An outer mirror for use in a motor vehicle is designed to prevent or attenuate chattering vibrations which a mirror holder holding a mirror produces against a mirror visor. This outer mirror assembly is provided with a first vibration-preventive member which is used in the mirror holder and with a second vibration-preventive member which is housed in a mirror visor and held in slidable contact with the first vibration-preventive member. The slidable surface of the first vibration-preventive member forms a curve which satisfies a condition that the inclination .alpha.' of the tangential line at each contact point of the two vibration-preventive members is always larger than the angle of friction .lambda. between the two vibration-preventive members. According to this structure, the first vibration-preventive member or the mirror holder is always given an outwardly acting force by the second vibration-preventive member which is provided with a spring.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: May 2, 1989
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventor: Morihiko Ogasawara
  • Patent number: 4826292
    Abstract: A diffusion plate useful for capturing a real image in an optical system. The plate has a roughened semi-transparent surface for diffusing incident radiation. The surface is comprised of cones etched therein for form a roughness. The cones have a geometry and average center-to-center distances which are precisely predetermined to correspond with either a desired angle of divergence or with a desired diffusion intensity.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: May 2, 1989
    Assignee: Gesellschaft fur Schwerionenforschung mbH
    Inventors: Reimar Spohr, Enrique Pfeng, Dieter Burchner, Poppl Thomas
  • Patent number: 4826289
    Abstract: A day/night rearview mirror assembly for vehicles useful in varying climatic conditions provides improved control and shifting between day and night positions, reduced undesired movement between day and night positions during adjustment of the major mirror position, and improved impact and bending resistance. The assembly preferably includes a molded mirror case, a prismatic mirror element and a two piece actuator assembly which provides consistent day/night shifting pressure in all temperatures. At least one stop member on the case back is included to limit actuator movement and precisely control day/night shifting. Cam surfaces on the actuator and stop member aid assembly. Downwardly opening support members pivotally mount the actuator assembly and prevent actuator movement toward the mirror element even upon impact. Ramp shoulders adjacent the support members also restrict actuator withdrawal.
    Type: Grant
    Filed: September 3, 1987
    Date of Patent: May 2, 1989
    Assignee: Donnelly Corporation
    Inventors: Wayne Vandenbrink, Howard W. Fant, Jr.
  • Patent number: 4826306
    Abstract: A compact wide angle rear view mirror mountable on a handlebars of a small vehicles includes a convex reflecting surface held in a frame having straps for fastening the frame to the handlebars.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: May 2, 1989
    Assignee: Mirror Image
    Inventors: David J. Grissen, Jeffrey C. Comfort
  • Patent number: 4826301
    Abstract: A photographic objective having a soft focus function comprising, from front to rear, a first lens component of positive power, a second lens component having a meniscus-shaped lens of forward convexity, an aperture stop, and a third lens component, the second lens component being axially movable for the purpose of producing a soft focus effect, and a technique of compensating for the image shift resulting from the movement of the soft focus-introducing lens component by automatically readjusting the position of the focusing lens component, are disclosed.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: May 2, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventor: Keiji Ikemori
  • Patent number: 4826266
    Abstract: The invention is a window for transmitting infrared radiation for use with infrared systems, such as an infrared laser. In detail, the window comprises a polycrystalline silicon substrate doped with between 1.times.10.sup.14 and 1.times.10.sup.16 atoms per cubic centimeter of an n-type impurity. The impurities can be selected from the group consisting of Phosphorus, Arsenic, Antimony, Bismouth and Lithium. To reduce reflection, both sides of the sheet are coated with an antireflection coating. Sheet resistances of less than 25 ohms per square are obtainable while simultaneously providing excellent transmission in the infrared at both room and elevated temperatures. The internal heating produced by coupling the window to a source of electrical power can be used for deicing.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: May 2, 1989
    Assignee: Lockheed Corporation
    Inventors: Brian W. Baird, Martin Levy