Patents Examined by Amanda Merlina
  • Variable angle reflectometer employing an integrating sphere and a light concentrator
    Patent number: 5745234
    Abstract: A reflectometer and a method for measuring the reflectance and transmittance of material using an integrating sphere and a light concentrator. The reflectance and transmittance measurements are performed as a function of the angle of incidence of a beam of light onto a sample and reference material. In a preferred embodiment, a CHC-lens concentrator having a high f/# and a low index of refraction is used.
    Type: Grant
    Filed: July 31, 1995
    Date of Patent: April 28, 1998
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Keith A. Snail, Leonard Hanssen, David Chenault