US 11,886,000 B2
Waveguides having integrated spacers, waveguides having edge absorbers, and methods for making the same
Christophe Peroz, San Francisco, CA (US); Chieh Chang, Cedar Park, TX (US); Sharad D. Bhagat, Austin, TX (US); Victor Kai Liu, Mountain View, CA (US); Roy Matthew Patterson, Hutto, TX (US); David Carl Jurbergs, Austin, TX (US); Mohammadreza Khorasaninejad, Milpitas, CA (US); Ling Li, Cedar Park, TX (US); Michael Nevin Miller, Austin, TX (US); and Charles Scott Carden, Austin, TX (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Appl. No. 17/044,754
Filed by Magic Leap, Inc., Plantation, FL (US)
PCT Filed Apr. 1, 2019, PCT No. PCT/US2019/025236
§ 371(c)(1), (2) Date Oct. 1, 2020,
PCT Pub. No. WO2019/195193, PCT Pub. Date Oct. 10, 2019.
Claims priority of provisional application 62/651,502, filed on Apr. 2, 2018.
Prior Publication US 2021/0109278 A1, Apr. 15, 2021
Int. Cl. G02B 27/42 (2006.01); B29D 11/00 (2006.01); G02B 5/00 (2006.01); G02B 27/01 (2006.01); F21V 8/00 (2006.01)
CPC G02B 6/0088 (2013.01) [B29D 11/00673 (2013.01); G02B 6/0016 (2013.01); G02B 6/0036 (2013.01); G02B 6/0076 (2013.01); G02B 27/4277 (2013.01); G02B 5/003 (2013.01); G02B 27/0172 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display system comprising:
an eyepiece comprising a stack of waveguides, wherein the stack of waveguides comprises:
at least one waveguide comprising:
an optically transmissive body comprising:
diffractive optical elements comprising a plurality of protrusions and intervening recesses on a major surface of the optically transmissive body;
spacers integral with the optically transmissive body and comprising a pattern of light scattering features on tops of the spacers, wherein the spacers extend to a height greater than a height of the diffractive optical elements; and
an overlying waveguide disposed on the spacers,
wherein the spacers separate the optically transmissive body from the overlying waveguide by a gap.