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. 10, 2009
Filed:
Nov. 24, 2004
Applicants:
Wojciech Walecki, San Jose, CA (US);
Phuc Van, San Jose, CA (US);
Inventors:
Wojciech Walecki, San Jose, CA (US);
Phuc Van, San Jose, CA (US);
Assignee:
Ahbee 1, L.P., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention is a device for measuring of absolute distances by means of low coherence optical interferometry. The proposed apparatus eliminates thermal of the conventional fiber optic interferometers caused by variation of the refractive index of the optical fiber material to change of the temperature.