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. 17, 1998
Filed:
Nov. 08, 1996
Applicant:
Inventor:
Vincent So, Ottawa, Ontario, CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
356416 ; 356419 ;
Abstract
A wavelength measurement system is provided which allows the very accurate measurement of wavelengths in a relatively small predetermined range. A transmission ratio is formed consisting of the power of an optical signal which has passed through a thin-film interference filter divided by the power of a control signal. A table look up is performed in a stored transmission ratio wavelength table. The system is also used in a self stabilizing laser, and a spectrometer.