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:
Sep. 10, 2013
Filed:
Dec. 23, 2009
Zhongyan Wang, San Ramon, CA (US);
Wei Gao, Fremont, CA (US);
Ruolin LI, Milpitas, CA (US);
Hongxing Yuan, Fremont, CA (US);
Jinshan LI, San Jose, CA (US);
Zhongyan Wang, San Ramon, CA (US);
Wei Gao, Fremont, CA (US);
Ruolin Li, Milpitas, CA (US);
HongXing Yuan, Fremont, CA (US);
Jinshan Li, San Jose, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A method and system for providing an optical grating are described. The optical grating is configured for light of a wavelength and includes a first optically transparent layer, a stop layer on the first optically transparent layer, and a second optically transparent layer on the stop layer. The first optically transparent layer is continuous and includes a material. The second optically transparent layer also includes the material. The second optically transparent layer also includes a plurality of discrete ridges spaced apart by a pitch. The stop layer is configured to be invisible to the light.