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:
Dec. 11, 2018
Filed:
Aug. 12, 2013
Agency for Science, Technology and Research, Singapore, SG;
Temasek Polytechnic, Singapore, SG;
Chee Fatt Chan, Singapore, SG;
Beng Soon Tan, Singapore, SG;
Yun Xu, Singapore, SG;
Bee Khuan Jaslyn Law, Singapore, SG;
Hong Yee Low, Singapore, SG;
Agency for Science, Technology and Research, Singapore, SG;
Temasek Polytechnic, Singapore, SG;
Abstract
According to one aspect of the invention, there is provided an optical grating comprising a substrate comprising a plurality of protrusions with a space in between any two adjacent protrusions; and a cap provided on at least one of the plurality of protrusions at an end that is furthest from the substrate, wherein the cap has a higher degree of optical attenuation compared to the substrate material and wherein the combination of each protrusion and the respective cap thereon has a generally symmetric cross-sectional profile.