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:
May. 18, 2004
Filed:
Sep. 17, 2001
Applicant:
Inventors:
Stephen R. Friberg, Mountain View, CA (US);
Charles C. Harb, Sunnyvale, CA (US);
Assignee:
Lambda Control, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/125 ;
U.S. Cl.
CPC ...
G01N 2/125 ;
Abstract
A wavelength detector is described. The wavelength detector directs an incoming optical signal into two paths, at least one of which varies with wavelength of the optical signal. The light in the two paths is detected by a photodetector and the output electrical signals are log amplified. The log amplified signals are applied to a difference amplifier whose output is indicative of the wavelength of the incident optical signal.
Friberg, Stephen. (2004). Wavelength detector and method of detecting wavelength of an optical signal (U.S. Patent No. 6738140). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6738140
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile