Patents Represented by Attorney A. Passman

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  • Large aperture extended range zoom lens
    Patent number: 4062621
    Abstract: Disclosed is an optical design for a variable focal length lens of large effective aperture which is focusable over an extended range including the "macro" range and is provided with a high degree of correction.
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: December 13, 1977
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • Adjustable focal length optical design
    Patent number: 4057329
    Abstract: A photographic objective comprises a plurality of lens elements, the outer two of which are adjustable axially by a small amount for fine adjustment of the focal length of the lens system to permit matching mass produced lens systems in pairs so that the focal lengths of every pair of such lenses can be adjusted within very close tolerances.
    Type: Grant
    Filed: August 9, 1976
    Date of Patent: November 8, 1977
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • Starting and stopping device for sound motion picture camera
    Patent number: 4052125
    Abstract: A motion picture camera for simultaneous recording of picture and sound is provided with a starting and stopping device for controlling film transport mechanisms and displacing same into and out of operative orientation with the film as the camera is actuated and deactuated wherein the size of the film loop is maintained substantially constant before or after and during camera operation.
    Type: Grant
    Filed: April 19, 1976
    Date of Patent: October 4, 1977
    Assignee: Nihon Beru-Haueru Kabushiki Kaisha
    Inventor: Takao Ishibashi