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:
Jun. 30, 1992
Filed:
Nov. 14, 1990
Applicant:
Inventors:
Harvey N Rogers, Jr, Los Angeles, CA (US);
Nicholas Cook, II, Chino, CA (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
25022716 ; 25022721 ; 73800 ;
Abstract
An apparatus for precisely controlling the movement and position of objects. The apparatus includes at least one moveable arm and a system for optically measuring the movement of the arm. The optical measurement system includes an optical fiber loop capable of producing microbend-induced optical attenuation when the loop is physically deformed by the movement of the arm. The apparatus further includes a signal source, a signal detector, and signal processing system for determining the attenuation of the signal between the signal source and the signal detector.