Patents Assigned to Isotec Partners, Limited
  • Patent number: 5044737
    Abstract: A monolithic double-axial gradient lens (30) is provided. The lens has an optic axis and three sections perpendicular to the optic axis: a first section (34) having a first graded index of refraction profile and having an outer surface, a middle section (32) having a second graded index of refraction profile, and a third section (36) having a third graded index of refraction profile and having an outer surface. A gradient in the index of refraction is provided in at least the first and third sections. As a result of appropriate selection of gradients, spherical and chromatic aberrations are eliminated or at least reduced, and thermal dependency of optical properties is minimized.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: September 3, 1991
    Assignee: Isotec Partners, Limited
    Inventor: Richard Blankenbecler