US 12,111,467 B2
Electronic device with multi-element display illumination system
Vikrant Bhakta, Cupertino, CA (US); Hyungryul Choi, San Jose, CA (US); Guolin Peng, Santa Clara, CA (US); and Scott M. DeLapp, Sunnyvale, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on May 10, 2019, as Appl. No. 16/409,681.
Claims priority of provisional application 62/691,513, filed on Jun. 28, 2018.
Prior Publication US 2020/0004020 A1, Jan. 2, 2020
Int. Cl. G02B 27/01 (2006.01); G02B 3/00 (2006.01); G02B 27/10 (2006.01); G02B 27/12 (2006.01); G02B 27/30 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 3/0037 (2013.01); G02B 27/1026 (2013.01); G02B 27/126 (2013.01); G02B 27/30 (2013.01); G02B 2027/0114 (2013.01); G02B 2027/013 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electronic device comprising:
light sources configured to produce illumination;
a spatial light modulator configured to produce light by reflecting the illumination; and
optics configured to redirect the light, wherein
the optics impart the light with an off-axis roll off in intensity across a field of view of the light,
the light sources are configured to compensate for the off-axis roll off in intensity produced by the optics, and
the optics comprise a hologram or an optical combiner.