Patents Assigned to United Detector Technology
  • Absolute radiometric detector
    Patent number: 4498012
    Abstract: A visible spectrum radiation measuring apparatus achieving an absolute measurement utilizing a plurality of inversion layer silicon photodiodes in a configuration wherein light reflected from the surface of a photodiode impinges on another photodiode, and its respective reflected light impinges on another photodiode, such that each time the light impinges on a photodiode surface a portion is absorbed, and that ultimately most of the light of the beam being measured is absorbed.
    Type: Grant
    Filed: February 2, 1983
    Date of Patent: February 5, 1985
    Assignee: United Detector Technology
    Inventor: C. Richard Duda