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:
Dec. 14, 1993
Filed:
Oct. 09, 1991
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356345 ; 356352 ; 356358 ; 356361 ;
Abstract
An optical device utilizing white light interferometry, having a Fabry-Perot interferometer incorporated in a reference branch of the optical device. The succession of interference products occurs from a combination of the light traveling through the transmission branch with the light traveling through the reference branch which has undergone 0 to N+1 reflections in the Fabry-Perot interferometer. The interference product gives a series of equally spaced absolute marks.