Patents Assigned to Bifocon Optics Forschungs-Und Entwicklungsgmbh
  • Zoned lens
    Patent number: 5982543
    Abstract: A zoned lens comprises at least two adjacent zones (16) formed such that the differences between the optical path lengths between an object point and a pixel of light beams extending through these two adjacent zones (16) of the lens (15) are at least equal to half the coherence length of the light used, preferably at least equal to the coherence length of the light used.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: November 9, 1999
    Assignee: Bifocon Optics Forschungs-Und Entwicklungsgmbh
    Inventor: Werner Fiala