Ling Zhao Li

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.

US Patent:

20210011305, Jan 14, 2021

Filed:

Jul 10, 2020

Appl. No.:

16/926352

Inventors:

- Plantation FL, US
Victor Kai Liu - Mountain View CA, US
Samarth Bhargava - Saratoga CA, US
Ling Li - Austin TX, US
Sharad D. Bhagat - Austin TX, US
Christophe Peroz - San Francisco CA, US
Jason Donald Mareno - Raleigh NC, US

Assignee:

Magic Leap, Inc. - Plantation FL

International Classification:

G02B 30/52
G02B 27/00

Abstract:

A dynamic eyepiece for projecting an image to an eye of a viewer includes a waveguide layer having an input surface, an output surface opposing the input surface, and a periphery. The waveguide layer is configured to propagate light therein. The dynamic eyepiece also includes a mechanical structure coupled to at least a portion of the periphery of the waveguide layer. The mechanical structure is operable to apply a first mechanical force to the at least a portion of the periphery of the waveguide layer to impose a first surface profile on the output surface of the waveguide layer and apply a second mechanical force to the at least a portion of the periphery of the waveguide layer to impose a second surface profile different from the first surface profile on the output surface of the waveguide layer.