Patents Assigned to Werner J. Fiala
  • Multifocal birefringent lens system
    Patent number: 5142411
    Abstract: A multifocal birefringent lens system is described together with applications of the lens system such as ophthalmic lenses (including those of the intraocular, contact and spectacle type) and optical instruments and devices including photographic cameras, telescopes, microscopes, copiers, spectrographic instruments, etc.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: August 25, 1992
    Assignee: Werner J. Fiala
    Inventor: Werner J. Fiala