US 12,072,502 B2
Eyepiece for head-mounted display and method for making the same
Chieh Chang, Cedar Park, TX (US); Christophe Peroz, Tokyo (JP); Ryan Jason Ong, Austin, TX (US); Ling Li, Cedar Park, TX (US); Sharad D. Bhagat, Austin, TX (US); and Samarth Bhargava, Saratoga, CA (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by Magic Leap, Inc., Plantation, FL (US)
Filed on Aug. 28, 2023, as Appl. No. 18/238,635.
Application 18/238,635 is a continuation of application No. 17/359,195, filed on Jun. 25, 2021, granted, now 11,740,469.
Claims priority of provisional application 63/044,124, filed on Jun. 25, 2020.
Prior Publication US 2024/0045209 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/01 (2006.01); G02B 5/18 (2006.01); G02B 6/02 (2006.01); G02B 27/00 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 5/1814 (2013.01); G02B 6/02033 (2013.01); G02B 6/02066 (2013.01); G02B 27/0081 (2013.01); G02B 2027/0174 (2013.01); G02B 2027/0178 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An article, comprising:
a planar waveguide comprising a first surface, the first surface comprising:
a first plurality of surface gratings;
a second plurality of surface gratings; and
a smooth portion between the first plurality of surface gratings and the second plurality of surface gratings,
the smooth portion comprising a first planar region at a first surface height and a second planar region at a second surface height above the first surface height, the first plurality of surface gratings and the second plurality of surface gratings extending above the first surface height, and the second planar region being adjacent either the first plurality of surface gratings or second plurality of surface gratings,
the second planar region extending over a de-functionalized portion of each of the first plurality of surface gratings or each of the second plurality of surface gratings and the second planar region is at the same height or higher than the first plurality of surface gratings or second plurality of surface gratings, wherein the surface grating of the de-functionalized portion remains but ceases to function as a grating.