Patents Assigned to Lenzar Optics Corp.
  • Compact zoom lens with high zoom ratio
    Patent number: 4991943
    Abstract: A compact high zoom ratio lens comprising from the object end a front positive stationary lens unit, a negative variating lens unit, a positive variating lens unit and a compensate lens unit, the variating lens units and the compensator lens unit being axially moveable to vary the equivalent focal length of said lens, the compensator group having an object magnification change of less than twenty-five percent over the zoom range of the lens.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: February 12, 1991
    Assignee: Lenzar Optics Corp.
    Inventor: Ellis I. Betensky