The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 26, 1991
Filed:
Jan. 30, 1990
Applicant:
Inventor:
Gerald L Auth, Laguna Beach, CA (US);
Assignee:
Midac Corporation, Costa Mesa, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356346 ;
Abstract
An interferometer structure is disclosed in which alignment problems are reduced by providing a special retaining structure for the transparent beamsplitter plates. In order to minimize distortion of the beamsplitter plates, the metal housing surfaces, against which they are held, are each coated with a material which has a very slippery and extremely flat surface engaging the surface of the respective beamsplitter plate. The preferred coating material is polytetrafluoroethylene. A glass tool (optically flat) is used during heating (and hardening) of the coating material, for the purpose of insuring an unusually flat coating surface.