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:
Aug. 19, 2014
Filed:
Oct. 08, 2008
Applicant:
Yaakov Amitai, Rehovot, IL;
Inventor:
Yaakov Amitai, Rehovot, IL;
Assignee:
Beamus, Ltd., Rehovot, IL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 14/02 (2006.01); G02B 5/18 (2006.01); G02F 1/035 (2006.01); G02B 6/293 (2006.01); G02B 6/12 (2006.01);
U.S. Cl.
CPC ...
G02F 1/035 (2013.01); G02B 6/29304 (2013.01); G02B 6/1203 (2013.01); H04J 14/02 (2013.01); G02B 5/1866 (2013.01); G02F 2201/305 (2013.01);
Abstract
The invention provides an optical device, including a light-transmissive substrate, and a pair of different, parallel gratings including a first grating and second grating, located on the substrate at a constant distance from each other, each of the pair of parallel gratings including at least one sequence of a plurality of parallel lines, wherein the spacings between the lines gradually increase from one edge of the grating up to a maximum distance between the lines, and wherein the arrangement of lines in the second grating is in the same direction as that of the first grating. A system utilizing a plurality of such optical devices is also disclosed.