US 12,393,025 B2
Waveguide combiners having arrangements for image uniformity
Ravi Komanduri, Santa Clara, CA (US); and Jinxin Fu, Fremont, CA (US)
Assigned to Applied Materials, Inc., Santa Clara, CA (US)
Filed by Applied Materials, Inc., Santa Clara, CA (US)
Filed on Oct. 11, 2022, as Appl. No. 18/045,663.
Claims priority of provisional application 63/256,226, filed on Oct. 15, 2021.
Prior Publication US 2023/0118998 A1, Apr. 20, 2023
Int. Cl. G02B 27/00 (2006.01); F21V 8/00 (2006.01); G02B 6/293 (2006.01); G02B 6/35 (2006.01); G02B 6/42 (2006.01)
CPC G02B 27/0081 (2013.01) [G02B 6/0026 (2013.01); G02B 6/005 (2013.01); G02B 6/29353 (2013.01); G02B 6/3538 (2013.01); G02B 6/4215 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A waveguide combiner, comprising:
an input coupling grating (ICG) defined by a plurality of input structures;
a pupil expansion grating (PEG) defined by a plurality of expansion structures disposed over a first side of the waveguide combiner;
an output coupling grating (OCG) defined by a plurality of output structures; and
a pixelated phase modulator disposed on a second side of the waveguide combiner opposing the first side of the waveguide combiner, the pixelated phase modulator aligned with the PEG of the first side of the waveguide combiner.