Patents Examined by Bruce Y. Arnold
  • Patent number: 5880888
    Abstract: An apparatus for combining a display image with the field of view of a viewer. Light from either a night vision system (14) of a CRT (12) is directed into an eyepiece assembly (18). The eyepiece magnifies and focuses the image into a combiner (30). The combiner (30) consists of an elongated optical element with two parallel sides (36) and (38) and two concave reflective surfaces (32) and (34) at each end. Light entering the combiner (30) is reflected off the first reflective surface (32) and then is reflected back and forth between the sides of the combiner (36) and (38) and then onto the second reflective surface (32). Light reflected off the second reflective surface (32) is combined with light entering from the field of view of the viewer through a prism element (44). The result is that the display image is superimposed in the field of view of the viewer. The system is light in weight, does not protrude significantly from the user's head, introduces minimal distortion and offers a wide field view.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: March 9, 1999
    Assignee: Hughes Aircraft Company
    Inventors: Wayne P. Schoenmakers, Donald J. Rotier
  • Patent number: 5448415
    Abstract: There is disclosed a device for emitting light diverging along an imaginary plane. This device includes a light source, a collimating lens, and a cylindrical optical element which are mounted within a casing. A reflecting surface, inclined with respect to an axis of the optical element, and a cylindrical surface extending along the axis of the optical element are formed on one end portion of the optical element disposed near one end portion of the casing. That portion of the optical element including this cylindrical surface serves as a cylindrical lens portion. The beam from the collimating lens advances along the axis of the optical element, and is reflected by the reflection surface to be directed toward the cylindrical lens portion. This reflected beam is converted by the cylindrical lens portion into a beam diverging along the imaginary plane disposed generally perpendicular to the axis of the optical element, and is emitted from the casing.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: September 5, 1995
    Assignee: Kabushiki Kaisha Machida Seisakusho
    Inventors: Hirofumi Ikeda, Yoshiyuki Iwashita
  • Patent number: 5386316
    Abstract: An all-reflective optical system has a first (10) and second (12) reflecting assembly. The first reflecting assembly (10) includes an afocal three-mirror anastigmat (18, 20, 22) with one or more apertures (28 A-D) in the tertiary mirror (22) to enable light or energy to pass therethrough. Light or energy reflects from the second reflecting assembly (12) through the apertures (28 A-D) to provide simultaneous viewing of a scene by a plurality of instruments (34). The second reflecting assembly (12) includes a planar mirror which provides pointing and stabilization motions for all of the instruments simultaneously without degrading image quality or pupil registration.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: January 31, 1995
    Assignee: Hughes Aircraft Company
    Inventor: Lacy G. Cook
  • Patent number: 5367399
    Abstract: A dual reflection unpolarizing monofacet (DRUM) scanner or beam deflector is made up of two essentially identical 45.degree. right angle prism elements with their hypotenuse faces together to form a body which may be rectangular or cylindrical and may be contained in a housing which provides for aerodynamic stability when the scanner rotates at high speed. The hypotenuse faces have a partially reflective surface on which an incident beam, collinear with the rotational axis, is incident. This beam is transmitted and reflected to provide dual beams, one of which is absorbed by light absorbing material, preferably a coating, on a surface of the body and the transmitted beam is retroreflected by a mirror on another surface of the body, back to the partially reflective surface. An output beam is provided by the retroreflected beam.
    Type: Grant
    Filed: February 13, 1992
    Date of Patent: November 22, 1994
    Assignee: Holotek Ltd.
    Inventor: Charles J. Kramer
  • Patent number: 5343259
    Abstract: A glasses with bridges and temples which are fixed to lens frames, without depending upon deposition. Bridges and temples of this glasses can be changed easily according to one's taste because they are not deposited to lens frames but are fixed to lens frames through the medium of sleeves and other means.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: August 30, 1994
    Assignee: Nakanishi Optical Co., Ltd.
    Inventor: Eiichi Nakanishi
  • Patent number: 5331454
    Abstract: It is possible to use an oriented monolayer to limit the Van der Waals forces between two elements by passivation. An oriented monolayer (34) is formed upon the landing electrode (10) of a spatial light modulator element. When the element is activated and deflects to come in contact with the landing electrode, the oriented monolayer decreases the Van der Waals forces and prevents the element from sticking to the electrode.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: July 19, 1994
    Assignee: Texas Instruments Incorporated
    Inventor: Larry J. Hornbeck
  • Patent number: 5331462
    Abstract: In a retro-focus type lens divided into three lens units by the widest air spacing and the next widest air spacing, a first lens unit is disposed on a long conjugate side and has negative refractive power, and includes a negative lens and a lens provided with an aspherical surface, a second lens unit is disposed subsequently to the first lens unit and provided with a positive lens block, and a third lens unit is disposed subsequently to the second lens unit and has positive refractive power, and includes a negative lens and a positive lens.
    Type: Grant
    Filed: November 5, 1991
    Date of Patent: July 19, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koutaro Yano
  • Patent number: 5327291
    Abstract: A lens system for a folding reflex camera is provided. The system includes: (a) a first group on the object side of the system's stop which (i) has a positive dioptric power, (ii) includes an aspheric surface, and (iii) has a concave surface adjacent to the stop; and (b) a second group on the image side of the stop consisting of either a single positive component or the combination of a single positive component and one or more focusing elements. The system includes at least two elements made of materials differing in dispersive powers where at least one of the elements is of plastic. The system can comprise just two plastic elements and even with such a simple configuration achieves excellent optical performance including a relatively flat field, relatively low distortion, and at least partial correction for lateral chromatic aberration.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: July 5, 1994
    Assignee: Polaroid Corporation
    Inventors: James G. Baker, William T. Plummer, Jon Van Tassell
  • Patent number: 5327281
    Abstract: Polymer electrolytes comprising co-polymers of vinylic, protonic acids and N,N' dialkyl substituted acrylamides and methacrylamides with high anodic stability, reduced acidity and high mechanical stiffness suitable for electrochromic devices, such as windows, mirrors and information displays. A preferred embodiment of the invention is a co-polymer with a composition of 30% 2-acrylamido-2-methyl propane sulfonic acid, 50% N,N dimethyl acrylamide and 20% water by weight.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: July 5, 1994
    Assignee: EIC Laboratories
    Inventors: Stuart F. Cogan, R. David Rauh
  • Patent number: 5325132
    Abstract: This disclosure refers to the securing of lenses in an ophthalmic mounting having a split rim eyewire using a spring loaded connecting device.
    Type: Grant
    Filed: November 2, 1992
    Date of Patent: June 28, 1994
    Inventors: Brian F. Mulrine, Eric M. Loeser
  • Patent number: 5321553
    Abstract: In a zoom lens having a lens unit of negative refractive power most adjacent to the object side, distortion can be corrected better and an excellent imaging performance is maintained. In a zoom lens having a lens unit of negative refractive power most adjacent to the object side, a negative lens whose image side surface in contact with air is formed by a concave surface is provided in the lens unit of negative refractive power, and the shape of the concave surface of the negative lens is made into an aspherical surface which satisfies the condition that -5<.kappa.<0.75 with regard to a cone constant .kappa. and of which the curvature monotonically decreases away from the optical axis.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: June 14, 1994
    Assignee: Nikon Corporation
    Inventors: Toshiro Ishiyama, Kenzaburo Suzuki
  • Patent number: 5321545
    Abstract: A stage (1) for fixing at least one porous or non-porous medium (27) that carries one or more samples to be observed and to be analyzed by means of a microscope. The stage includes a hole (10) for receiving a plate (20; 28) for supporting the medium (27) and thus for observing the samples carried thereby. The stage is designed for pressing the medium (27) against the support plate (20; 28) by suction. The invention is applicable to the biological industry for rapid and indexed analysis under a microscope of filters and other media carrying multiple samples.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: June 14, 1994
    Assignee: Biocom S.A.
    Inventor: Jean-Claude Bisconte
  • Patent number: 5321442
    Abstract: Non-prescription and or prescription glasses and or sunglasses having a single metal or plastic frame and a plurality of interchangeable, removable or replaceable lenses, temple side bars, temple ornaments, color beaded lenses and adjustable earpiece. Lenses of different colors and shapes are magnetically attached to the frame. Temple side bars and ornaments of different colors and shapes are snap-fitted to the frame.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: June 14, 1994
    Inventor: Gerry M. Albanese
  • Patent number: 5321441
    Abstract: The present invention provides a sunglass lens having a central region which is provided with an ultra-violet screening agent to protect the eye while the surrounding regions of the lens have little or no screening agent so as to permit tanning of the skin around the eye. In a preferred embodiment, the lens is additionally colored with tint, the darkness of which may vary over the surface area of the lens. In addition, the variation of tint over the surface of the lens is different from the variation of the ultra-violet screening agent. For example, the ultra-violet screening agent is most highly concentrated in the central portion of the lens whereas the colored tint is most highly concentrated around the periphery of the lens.
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: June 14, 1994
    Assignee: Tanoptic AG
    Inventor: Jan E. Osterlund
  • Patent number: 5316564
    Abstract: The invention provides a method of preparing a light-weight base body of a reflecting mirror such as a mirror in a reflecting astronomical telescope, which is very stable not only thermally but also mechanically and is highly resistant against adverse environmental influences. The mirror base is composed of a porous foamed disc body of fused quartz glass or high-silica glass sandwiched by two plates of fused quartz glass or high-silica glass, of which one is made from transparent glass and serves to provide an optical surface having flatness or a specified curvature, and the side surface of the porous foamed disc body is protected against environmental influences by providing an air-tight sealing layer formed from a silicone rubber-based sealing agent or a thin sheet of fused quartz glass or high-silica glass.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: May 31, 1994
    Assignees: Shin-Etsu Quartz Co., Ltd., Okamoto Optics Work, Inc.
    Inventors: Tatsumasa Nakamura, Yoshiaki Ise, Yoshiaki Okamoto
  • Patent number: 5317453
    Abstract: The invention relates to an optical computing element for use in an optical computer utilizing computing light rays having a plurality of wavelength components. The optical computing element comprises a photo-chemical hole burning element which functions as a wavelength selecting filter of the computing light rays. Therefore, the optical computer using the photo-chemical hole burning element of the invention can perform arithmetic operations by taking advantage of differences in optical wavelength. The computer can efficiently perform bulky arithmetic processing, and can also speedily perform arithmetic operations through simultaneous parallel processing for information.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: May 31, 1994
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tetsuya Nishimura, Motomu Yoshimura, Mitsuo Maeda
  • Patent number: 5315440
    Abstract: A zoom lens having two groups of lens components including from the object side a positive group and a negative group. The positive group includes two lens units, a weak unit, and a positive unit, while the negative group has at least one negative lens component and provides most of the magnification change during zooming.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: May 24, 1994
    Assignee: Eastman Kodak Company
    Inventors: Ellis I. Betensky, Melvyn H. Kreitzer
  • Patent number: 5313327
    Abstract: In an ocular lens system for use with a penta-mirror, an ocular lens includes a positive meniscus lens whose concave surface is directed to the pupil side and whose convex surface is directed to the object. The concave and convex surfaces of the positive meniscus lens are aspherical. The two surface are shifted to the pupil side from reference spherical surfaces defined by paraxial radii of curvature.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: May 17, 1994
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Takayuki Ito, Sachio Hasushita
  • Patent number: 5313329
    Abstract: A lens hood assembly is provided for use with a zoom lens having a group of variable power lenses for varying focal length, the assembly comprising a lens hood which is adapted to be moved along the optical axis direction of the zoom lens and which is provided, on its front end, with an incident light restriction wall with a center opening through which incident light passes into the zoom lens, said lens hood being associated with the zooming operation of the zoom lens, wherein the lens hood is adapted to be moved forwardly and rearwardly at the long focal length and the short focal length of the zoom lens, respectively.
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: May 17, 1994
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Toshiaki Ueda
  • Patent number: 5313328
    Abstract: An optical system comprising a plural number of lens elements at least one of which is designed as a graded refractive index lens element having refractive index distribution in the radial direction, and has aberrations favorably corrected in said optical system as a whole by making most of the correcting functions of the graded refractive index lens element for Petzval's sum and chromatic aberration.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: May 17, 1994
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Norihiko Aoki