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:
Jan. 20, 1987
Filed:
Nov. 07, 1984
Applicant:
Inventors:
Wilfried Auch, Asperg, DE;
Eberhard Schlemper, Vaihingen, DE;
Assignee:
International Standard Electric Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
332-751 ; 350358 ;
Abstract
Two electrical-to-acoustical transducers (W1, W2) are attached to two contiguous sides of a cube (B) made of optically transparent material. The propagation directions of the two waves delivered by the transducers intersect inside the cube. The frequency of the light beam striking the device is shifted by f.sub.1 -f.sub.2, where f.sub.1 and f.sub.2 are the frequencies of the drive signals for the two transducers. The deflection of the light beam in the two propagation directions of the sound waves is proportional to the frequencies of the drive signals.