Ling Li Li

Address:

2960 Hilltop Mall Rd, Richmond, CA 94806

VIN:

5NPET46C27H245692

Make:

HYUNDAI

Model:

SONATA

Year:

2007

US Patent:

20210405372, Dec 30, 2021

Filed:

Jun 25, 2021

Appl. No.:

17/359195

Inventors:

- Plantation FL, US
Christophe Peroz - San Francisco CA, US
Ryan Jason Ong - Austin TX, US
Ling Li - Cedar Park TX, US
Sharad D. Bhagat - Austin TX, US
Samarth Bhargava - Saratoga CA, US

International Classification:

G02B 27/01
G02B 27/00
G02B 6/02

Abstract:

A method, includes providing a wafer including a first surface grating extending over a first area of a surface of the wafer and a second surface grating extending over a second area of the surface of the wafer; de-functionalizing a portion of the surface grating in at least one of the first surface grating area and the second surface grating area; and singulating an eyepiece from the wafer, the eyepiece including a portion of the first surface grating area and a portion of the second surface grating area. The first surface grating in the eyepiece corresponds to an input coupling grating for a head-mounted display and the second surface grating corresponds to a pupil expander grating for the head-mounted display.