Patents Examined by John A. Corsin
  • Cold-light mirror
    Patent number: 3944320
    Abstract: A cold-light mirror, especially suitable in the form of an ellipsoidal or hyberbolic mirror for an optical system for forming a light beam, comprises a metal substrate covered with a pigmented vitreous layer for absorption of infra-red radiation which is transmitted by an overlying dielectric interference layer.
    Type: Grant
    Filed: July 26, 1974
    Date of Patent: March 16, 1976
    Assignee: Thorn Electrical Industries Limited
    Inventor: William James McLintic