Patents by Inventor Andor A. Fleischman

Andor A. Fleischman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Large aperture extended range zoom lens
    Patent number: 4230397
    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: September 21, 1978
    Date of Patent: October 28, 1980
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • Objective for optical system
    Patent number: 4076390
    Abstract: This invention relates to an objective optical sub-system having fewer elements and improved performance specifications as compared to an objective it will replace.
    Type: Grant
    Filed: December 7, 1976
    Date of Patent: February 28, 1978
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • Short focal length optical system with large aperture
    Patent number: 4065205
    Abstract: This invention relates to a large aperture optical system of short focal length primarily intended for efficiently transmitting monochromatic light rays in optical instruments with an extraordinarily high degree of correction over a prescribed field.
    Type: Grant
    Filed: July 27, 1976
    Date of Patent: December 27, 1977
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • Reflex copier lens
    Patent number: 4062625
    Abstract: A lens system primarily for a copier is a plastic and glass lens design of reflex configuration enabling lower manufacturing cost with a higher degree of optical correction than a comparable all glass straight through design of similar optical characteristics. In the preferred embodiment, the plastic element is formed with aspheric surfaces.
    Type: Grant
    Filed: September 3, 1976
    Date of Patent: December 13, 1977
    Assignee: Bell & Howell Company
    Inventors: Andor A. Fleischman, Walter R. Linke
  • 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
  • Copier lens of reflex design
    Patent number: 4060312
    Abstract: A lens system primarily for a copier is a reflex, plastic and glass lens design enabling lower manufacturing costs with a higher degree of optical correction than a comparable all glass straight through design of similar optical characteristics. In the preferred embodiment, selected of the plastic elements is formed with aspheric surfaces.
    Type: Grant
    Filed: September 3, 1976
    Date of Patent: November 29, 1977
    Assignee: Bell & Howell Company
    Inventors: Walter R. Linke, 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
  • Full-focus eyepiece
    Patent number: 4054370
    Abstract: An optical system for an eyepiece designed primarily to be used to observe an image formed by an optical instrument, such as an image intensifier, when viewing scenes under adverse or low light conditions. The system is designed with fewer elements than comparable designs of similar optical performance, and in the embodiments shown, five elements provide the required correction for high quality imaging of the viewed scene.
    Type: Grant
    Filed: July 9, 1976
    Date of Patent: October 18, 1977
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • Ultra-violet micrographic objective
    Patent number: 4050778
    Abstract: An economical optical system without elements of more exotic optical materials for imaging light rays from an ultra-violet or near ultra-violet light source of an optical instrument.
    Type: Grant
    Filed: August 10, 1976
    Date of Patent: September 27, 1977
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • Ultra-violet micrographic objective
    Patent number: 4050779
    Abstract: An economical optical system for imaging light rays from a near ultra-violet light source of an optical instrument without elements of special optical materials.
    Type: Grant
    Filed: August 10, 1976
    Date of Patent: September 27, 1977
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • 7MM Ultrafiche lens
    Patent number: 3998528
    Abstract: This invention relates to a short focal length, large aperture, high resolution optical system for efficiently transmitting a microfiche image to a viewing surface at an unusually high magnification ratio with an extraordinarily high degree of correction over a prescribed field.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: December 21, 1976
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • Microfilm recorder lens
    Patent number: 3998529
    Abstract: This invention relates to a simplified, and therefore less costly to manufacture, optical system for efficiently forming microimages onto an image plane.
    Type: Grant
    Filed: August 13, 1975
    Date of Patent: December 21, 1976
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • Short focal length long back focus objective
    Patent number: 3944338
    Abstract: This invention relates to a short focal length, large aperture optical system having a relatively long back focus primarily designed to efficiently transmit monochromatic light rays to an image plane with an extraordinarily high degree of correction over a prescribed field.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: March 16, 1976
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • Short focal length Petzval-type optical system
    Patent number: 3942877
    Abstract: This invention relates to a short focal length, large aperture Petzval-type optical system primarily designed to efficiently transmit light rays to an image plane with an extraordinarily high degree of correction over a prescribed field.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: March 9, 1976
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman
  • Large aperture extended range zoom lens
    Patent number: RE30592
    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: January 23, 1978
    Date of Patent: April 28, 1981
    Assignee: Bell & Howell Company
    Inventor: Andor A. Fleischman