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. 03, 2024
Filed:
Mar. 07, 2022
Digilens Inc., Sunnyvale, CA (US);
Jonathan David Waldern, Los Altos Hills, CA (US);
Alastair John Grant, San Jose, CA (US);
Milan Momcilo Popovich, Leicester, GB;
Shibu Abraham, Sunnyvale, CA (US);
Baeddan George Hill, Sunnyvale, CA (US);
Tsung-Jui Ho, Sunnyvale, CA (US);
Michiel Koen Callens, Sunnyvale, CA (US);
Hyesog Lee, Sunnyvale, CA (US);
DigiLens Inc., Sunnyvale, CA (US);
Abstract
Gratings may be used in waveguides. Deep surface relief gratings (SRGs) may offer many advantages over conventional SRGs, an important one being a higher S-diffraction efficiency. Deep SRGs can be implemented as polymer surface relief gratings or evacuated periodic structures (EPSs). EPSs can be formed by first recording a holographic polymer dispersed liquid crystal (HPDLC) periodic structure. Removing the liquid crystal from the cured periodic structure provides a polymer surface relief grating. Polymer surface relief gratings have many applications including for use in waveguide-based displays.