Patents Examined by William R. Ponter
  • Reflecting telescope with correcting lens
    Patent number: 4477156
    Abstract: A reflecting telescope is provided in which a meniscus lens corrects for coma of the primary parabolic reflecting mirror, and also for coma and spherical aberration of an eyepiece, when an eyepiece is used. The meniscus lens may be formed from a plano-concave lens and a plano-convex lens positioned with their planar sides mutually parallel.
    Type: Grant
    Filed: October 29, 1981
    Date of Patent: October 16, 1984
    Assignee: Rolin J. Gebelein
    Inventors: Rolin J. Gebelein, David Shafer