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. 01, 2014
Filed:
Aug. 04, 2011
Applicant:
Kenneth C. Johnson, Santa Clara, CA (US);
Inventor:
Kenneth C. Johnson, Santa Clara, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/44 (2006.01); G02B 5/18 (2006.01); G11B 7/1353 (2012.01);
U.S. Cl.
CPC ...
G11B 7/1353 (2013.01);
Abstract
A 'Stacked-Grating Light Modulator' ('SGLM') comprises two diffraction grating elements, a reflection grating and a transmission grating, in close parallel proximity. An incident beam transmits through the transmission grating and is reflected by the reflection grating back through the transmission grating. The relative lateral position of the two gratings is varied to modulate the beam's zero-order reflectance.