US 12,169,278 B2
Head mounted display with multifocal module
Yi Qin, Mountain View, CA (US); and Ozan Cakmakci, Sunnyvale, CA (US)
Assigned to GOOGLE LLC, Mountain View, CA (US)
Appl. No. 17/437,174
Filed by GOOGLE LLC, Mountain View, CA (US)
PCT Filed Dec. 4, 2019, PCT No. PCT/US2019/064409
§ 371(c)(1), (2) Date Sep. 8, 2021,
PCT Pub. No. WO2020/256770, PCT Pub. Date Dec. 24, 2020.
Claims priority of provisional application 62/863,552, filed on Jun. 19, 2019.
Prior Publication US 2022/0171192 A1, Jun. 2, 2022
Int. Cl. G02B 27/01 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 2027/0185 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A head mounted display (HMD) system comprising:
a micro-display to emit display light;
a multifocal module coupled to the micro-display and comprising a voltage controlled optical element, the multifocal module to generate a plurality of images based on the display light, each of the plurality of images having a different focal length; and
a filter stack coupled to the multifocal module.