Patents Examined by Ronald M. Kachmarik
  • Patent number: 4919499
    Abstract: An optical printer of the scanning type includes a light emitting element which is drivable in accordance with printing data for emitting light. The printer also includes an optical system which passes the light through the system to focus the light on a photosensitive member. A mirror is movably interposed between the optical system and the photosensitive member to deflect the beam from the optical system, thereby causing the beam to scan the photosensitive member at a high speed. To realize the scanning process, an operation assembly supports the mirror to pivotally move the mirror so that the mirror's reflecting surfaces faces toward the light emitting element by subjecting the mirror to a simple harmonic motion within a specified range of angles.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: April 24, 1990
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Masahiko Aiba
  • Patent number: 4919501
    Abstract: An opto-mechanical deflector system for an imaging system comprises at least one scanning mirror struck by a collimated light beam focused onto a flat image plane by a first plano-convex lens, a concave mirror and an aplanatic lens system containing a plano-concave lens and a second plano-convex lens between said scanning mirror and said first plano-convex lens, the refractive indices of said first plano-convex lens and said plano-concave lens being substantially indentical and the refractive index of said second plano-convex lens being substantially less than that of said plano-concave lens.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: April 24, 1990
    Assignee: Linotype AG
    Inventor: Michael Plaot
  • Patent number: 4917462
    Abstract: An aperture probe in the form of a tapered metal-coated glass pipette having a thin tip provides near-field access to a sample for near-field microscopy. The pipette is formed from a glass tube drawn down to a fine tip, and then coated, as by evaporation, by a metallic layer. The central opening of the tube is drawn down to a submicron diameter, and the metal coating is formed with an aperture at that opening. Aperture diameters down to 500 Angstroms diameter are provided. Also disclosed is a microscope utilizing the pipette aperture for scanning near-field imaging of samples.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: April 17, 1990
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Aaron Lewis, Michael Isaacson, R. Eric Betzig, Alec Harootunian
  • Patent number: 4917457
    Abstract: An endoscope attachment has optics for viewing with the naked eye having the first optical axis coinciding with the optical axis of an endoscope, imaging optics having the second optical axis perpendicular to the first optical axis, and a beam separating prism that splits rays of light coming from the endoscope into two beams that are respectively launched into the two optics. The beam separating prism has an entrance end face and the first exit end face which are both oriented perpendicular to the first optical axis, a first reflecting plane disposed between the entrance end face and the first exit end face, a second exit end face oriented perpendicular to the second optical axis, and a second reflecting plane disposed between the first optical axis and the second exit end face.
    Type: Grant
    Filed: June 3, 1988
    Date of Patent: April 17, 1990
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Takashi Iizuka
  • Patent number: 4917478
    Abstract: An arrangement preventing the creation of secondary images in the case of the so called "tandem scanning" of objects by means of a scanning disk with spirally arranged openings similar to a Nipkow disk and a mirror provided on one of its surfaces with a semitransparent mirror layer in which said mirror has a thickness sufficient to space apart the light rays reflected from the mirrored and unmirrored surfaces so that only the light ray reflected from the mirrored surface will pass through the scanning disk.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: April 17, 1990
    Assignee: Jednotne Zemedelske Druzstvo "Vitezny Unor" Se Sidlem V Komorne
    Inventors: Mojmir Petran, Milan Hadravsky, Miroslav Maly
  • Patent number: 4917456
    Abstract: A crossover network is obtained by using a plurality of similar optical crossover stages. Each stage includes two light paths that combine at an output plane. One path provides the direct connection while the other path provides the crossover connection. To realize this crossover capability, each stage comprises a beam splitter element that accepts a beam containing an image array and develops therefrom two beams that are each directed in two different paths. Along one path, means are provided for reversal of selected segments of the image array and for sending of the reversed or crossed-over image through a beam combiner. Along the second path, means are provided for applying the light to a beam combiner without the image reversal. One disclosed means for image reversal is a prismatic mirror. The number of corners in such a mirror differs from stage to stage.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: April 17, 1990
    Assignee: AT&T Bell Laboratories
    Inventors: Jurgen Jahns, Miles J. Murdocca
  • Patent number: 4915489
    Abstract: Disclosed is an optical for directing radiant energy comprising a pyramidal prism having energy reflective side surfaces. These side surfaces diverge from an imaginary apex on a central axis equidistant from the side surfaces. Within the prism is a pyramidal reflector whose apex is also on the central axis. The reflector has reflective side surfaces faced toward the prism side surfaces, the reflector's side surfaces diverging from the central axis at a different angle than do the prism side surfaces. One embodiment of the optical device creates several relatively concentrated, polarized energy beams from a relatively unconcentrated, unpolarized energy beam.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: April 10, 1990
    Inventor: Robert Minko
  • Patent number: 4913526
    Abstract: Optical printhead for hard copy printers and copiers. The printhead includes a fiber optic lens array having a reinforcing and locating bar permanently bonded to the side and exact center of the lens. The bar has a dimension parallel to the axis of the fibers which is much more accurate than the length of the lens along the same axis. Centering of the lens array is easily and accurately accomplished by centering the bar. The bar also stiffens and straightens the lens array to maintain desired focal characteristics. The printhead also includes an accurately dimensioned mounting plate which is used to attach the printhead to the printer. A stress relieving structure is used to support the electronic circuitry and LED's in the printhead from a rigid heat sink.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: April 3, 1990
    Assignee: Eastman Kodak Company
    Inventor: Edwin A. Hediger
  • Patent number: 4911534
    Abstract: The optical unit comprises a frame (1), a subrame (3), and objective holder (5) having an objective (7) for concentrating the radiation beam so as to form a radiation spot. First connecting means (11) movably connect the objective holder to the subrame, which first connecting means allow focussing movements of the objective and counteract other movements. Second connecting means (9) movably connect the subframe to the frame, which second connecting means allow radial tracking movements of the objective and counteract other movements. Electrically controllable first focussing means (19), connected to the frame and electrically controllable second focussing means (21) connected to the objective holder cooperate with each other to produce the focussing movements.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: March 27, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Cornelis M. Beyersbergen van Henegouwen, Henricus M. C. van Gestel, Petrus J. Blankers
  • Patent number: 4911543
    Abstract: In a microscope viewing apparatus for viewing a specimen image, the provision of microscope viewing apparatus including a microscope eyepiece lens for focusing on a focusing plane at or above a specimen support panel and coincident with a desired viewing plane of a real microscopic specimen positioned therein, arranged to generate a specimen image, and the further provision of separate overlay pattern image-generating apparatus arranged to optically effectively generate a desired type, shape and size of optical overlay pattern and image, and the further provision of optical-image-mixing and combining apparatus arranged to receive the specimen image and the optical overlay pattern image and to effectively mix and combine same into desired selectively optically alignedly effectively centered and superimposed relationship to form a resultant effectively visually composite image output for effective viewing by the microscope viewing apparatus.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: March 27, 1990
    Inventor: R. W. Hodgson
  • Patent number: 4906070
    Abstract: A thin, flexible film made of a transparent polymeric material including a structured surface and an opposite smooth surface, wherein light striking either surface, within certain angular ranges, is totally internally reflected. The structured surface includes a linear array of miniature substantially right angled isosceles prisms arranged side-by-side to form a plurality of peaks and grooves. In addition, the perpendicular sides of the prisms make an angle of approximately 45.degree. with the smooth surface, and when the film is curled the smooth surface lies in a smooth continuous arcuate curve without materially affecting the performance of the film. Because of the film's flexibility and its ability to totally internally reflect light, it may be utilized in a variety of ways, for example, as a collector of solar energy or as a light conduit. The performance of the film may be manipulated to permit controlled light leakage.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: March 6, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Sanford Cobb, Jr.
  • Patent number: 4906061
    Abstract: A laser beam from a laser beam source is applied via a collimator lens to a rotating light deflector, deflected by the light deflector, and applied via an f.theta. lens to a surface to scan the same.The f.theta. lens comprises a single-element lens with its f.theta. characteristics well corrected.To correct the curvature of field by the f.theta. lens, the collimator lens is vibrated in simple harmonic motion along the optical axis thereof, or the laser beam source is vibrated in simple harmonic motion along the optical axis of the collimator lens, in synchronism with the scanning of the surface with the laser beam.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: March 6, 1990
    Assignee: Ricoh Company, Ltd.
    Inventor: Katsumi Yamaguchi
  • Patent number: 4906083
    Abstract: An apparatus, particularly a microscope, for the examination of a plurality of gemstones, pearls or similar small objects, comprises means to create dark-field illumination and a slide-type displaceable specimen holder of plastics material which has an elongate recess in its upper surface with a cross-section which narrows towards the bottom of the recess for example. The means to create the dark-field illumination comprises a cold light source, a glass-fiber bundle and polarization filter means, and the specimen holder consists of translucent material, especially Plexiglass. Additionally there is provided a device for aiding the examination of uncut gemstones and similar small objects, comprising means to create dark-field illumination and means for immersion inspection which comprises a vessel containing an immersion liquid.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: March 6, 1990
    Inventor: Hans-Eberhard Sattler
  • Patent number: 4904055
    Abstract: A plurality of aperture blades are each provided with an opening having a V-shaped edge, such that when the blades are superimposed they cooperate to define a six-sided aperture. The blades are each mounted for rectilinear movement by a pair of guide pins. Cam pins supported on a driver rotated by a stepper motor engage cam slots in the blades and position them rectilinearly to change the aperture size.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: February 27, 1990
    Assignee: Eastman Kodak Company
    Inventor: Mark E. Bridges
  • Patent number: 4902085
    Abstract: The invention provides a rotatable polygon mirror consisting of (a) cylindrical boss being disposed at the center part of polygon and having a hole therein, (b) side plate being disposed at each side of polygon, the outer surface of the side plate forming a mirror surface, (c) connecting-plate for connecting between the cylindrical boss and the side plate, and rib being radially disposed between the cylindrical boss and each corner of polygon.
    Type: Grant
    Filed: June 1, 1988
    Date of Patent: February 20, 1990
    Assignee: Konica Corporation
    Inventors: Kazuhiko Murakoshi, Toshio Shimura
  • Patent number: 4902084
    Abstract: An optical scanning apparatus and method that repeatedly scans a beam of light longitudinally along an outer photosensitive surface of a cylindrical drum, in synchronism with a rotation of the drum about is central longitudinal axis, whereby the beam traces a raster scan pattern on the surface. An aperture plate having an alongated aperture formed in it is positioned adjacent to the drum, with the aperture's axis oriented substantially parallel with the drum's axis. The aperture's width in a cross-scan direction, perpendicular to the longitudinal scan direction, is narrower than the cross-scan width of the scanning beam, such that the aperture transmits to the drum surface only a narrow portion of the beam. The location and the intensity of the portion of the beam transmitted through the aperture of the drum surface is substantially unaffected by a limited cross-scan deviation of the beam.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: February 20, 1990
    Inventor: Oren Aharon
  • Patent number: 4900139
    Abstract: A lens comprising from the image side a first lens unit which is a positive element with at least one aspheric surface; a three element lens unit consisting of a biconcave element, a biconvex element and another positive component, in that order; a third lens unit having a strongly concave image side surface and which serves as a field flattener and to correct the Petzval sum of the lens.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: February 13, 1990
    Assignee: U. S. Precision Lens, Inc.
    Inventor: Melvyn H. Kreitzer
  • Patent number: 4898452
    Abstract: A target plate is mounted on a reflector body support unit by being slid into and engaged with guide grooves formed in the upstanding arms of the U-shape frame. Locking screws, each with a knob end manipulatable by hand and a forward enlarged end, are screwed into projection on pivotal shafts mounting the reflector and press against the target plate holding it in position.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: February 6, 1990
    Assignee: Sokkisha Co., Ltd.
    Inventors: Hideya Kawachi, Minoru Chiba
  • Patent number: 4898437
    Abstract: A polygon system for correcting wobble by double reflection from the active facet without bow is disclosed. Instead of the impinging light source being transverse to the axis of rotation of a rotating polygon, this rotating polygon 12 having facets at a draft angle to the axis of rotation, a collimated light source 10 impinges upon a rotating polygon 12 with the facets 22 having the predetermined draft angle D. A., and angles of incidence at the first and second reflections. By two further relections, 18, 20, the light is then reimpinged upon the same facet; wobble is similarly corrected, but with no effects of bow.
    Type: Grant
    Filed: June 17, 1986
    Date of Patent: February 6, 1990
    Assignee: Xerox Corporation
    Inventor: Harry P. Brueggemann
  • Patent number: 4895430
    Abstract: A thermal compensating mount 10 is provided for an alignment sensitive component 12. Thermal compensating 10 mount comprises a cylindrical extension 14 which is formed integral to and has the same coefficient of thermal expansion as alignment sensitive component 12. A cylindrical receptacle 20 is formed into mounting surface 18. Cylindrical extension 14 secured within cylindrical receptacle 20 that surrounds the cylindrical extension. The difference between the diameter of cylindrical extension 14 and cylindrical receptacle 20 is such that the differential thermal expansion across cylindrical extension 14 and the edges of cylindrical receptacle 20 is exactly compensated for by the thermal expansion of the surrounding adhesive 16.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: January 23, 1990
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Antony Jalink, Jr., Scott R. Campbell