US 11,953,689 B2
Virtual image display system for virtual reality and augmented reality devices
Jiunn-Yiing Lai, New Taipei (TW); and Feng-Chun Yeh, Taipei (TW)
Assigned to HES IP HOLDINGS, LLC, Austin, TX (US)
Appl. No. 18/017,840
Filed by HES IP HOLDINGS, LLC, Austin, TX (US)
PCT Filed Sep. 30, 2021, PCT No. PCT/US2021/052750
§ 371(c)(1), (2) Date Jan. 24, 2023,
PCT Pub. No. WO2022/072565, PCT Pub. Date Apr. 7, 2022.
Claims priority of provisional application 63/085,172, filed on Sep. 30, 2020.
Prior Publication US 2023/0296898 A1, Sep. 21, 2023
Int. Cl. G02B 27/01 (2006.01); G06V 10/10 (2022.01); H04N 13/332 (2018.01); H04N 13/351 (2018.01)
CPC G02B 27/0172 (2013.01) [G06V 10/16 (2022.01); H04N 13/332 (2018.05); H04N 13/351 (2018.05)] 14 Claims
OG exemplary drawing
 
1. A virtual image display system comprising:
a first light emitter emitting a plurality of first light signals to be projected into a viewer's first eye;
a first light direction modifier varying a light direction of the plurality of first light signals emitted from the first light emitter; and
wherein the light direction of first light signals is varied at a first scan rate with respect to time within a first spatial range for displaying a first image frame with a predetermined number of light signals and the first scan rate is configured to be non-constant,
wherein the first light emitter emits the plurality of first light signals as light pulses at a varying frequency to adjust a number of first light signals per cross-section area of a predetermined region in the first image frame.