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, 1987
Filed:
Jan. 24, 1985
Applicant:
Inventors:
Bertil Hok, Vaster.ang.s, SE;
Lars Jonsson, Vaster.ang.s, SE;
Assignee:
ASEA Aktiebolag, Vaster.ang.s, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250227 ; 2502 / ; 7351 / ; 350 9634 ; 350 961 ;
Abstract
A fiber-optic sensor for sensing dynamic acceleration is arranged so that the acceleration gives rise to changes in angle between at least one body and the optical axis of at least one lens of graded index type (GRIN lens). At least one optical fiber is arranged to transmit optical energy to and from one end surface of the lens. The optical energy reflected back into the fiber is dependent on the angle and essentially independent of the distance between the body and the lens, and the sensor comprises at least one photoluminescent material so that a part of the optical output signal from the sensor includes a photoluminescent signal.