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:
Apr. 02, 1991
Filed:
Jun. 20, 1989
Applicant:
Inventors:
Rudolph C Dankwort, Phoenix, AZ (US);
Charles D Klem, Phoenix, AZ (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
25022721 ; 25022712 ; 25023119 ;
Abstract
An optical sensor system utilizes time multiplexing of two optical signals developed from a common light source. Relative amplitudes of the two optical signals are varied as a function of a measured parameter, time multiplexed, and coupled to a common optical transmission path. At the receiving end of the optical transmission path the two optical signals are converted to electrical signals by the same detector, thus eliminating sensitivity to source gain, interconnect fiber loss, and detector gain as sources of calibration error.