US 11,818,512 B2
Adaptive illuminator sequencing
Rajeev Ramanath, Torrance, CA (US)
Assigned to Snap Inc., Santa Monica, CA (US)
Filed by Snap Inc., Santa Monica, CA (US)
Filed on Dec. 6, 2021, as Appl. No. 17/542,711.
Application 17/542,711 is a continuation of application No. 16/710,996, filed on Dec. 11, 2019, granted, now 11,196,970.
Claims priority of provisional application 62/783,328, filed on Dec. 21, 2018.
Prior Publication US 2022/0094891 A1, Mar. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 9/31 (2006.01)
CPC H04N 9/3155 (2013.01) [H04N 9/3126 (2013.01); H04N 9/3164 (2013.01); H04N 9/3179 (2013.01); H04N 9/3194 (2013.01); H04N 9/3144 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An eyewear device comprising:
a lens defining a waveguide;
a support structure adapted to be worn on the head of a user, the support structure configured to support the lens in a viewing area visible to the user when wearing the support structure;
an illumination device including a plurality of illumination sources, each illumination source including a first illuminator adapted to emit light at a first frequency, a second illuminator adapted to emit light at a second frequency, and a third illuminator adapted to emit light at a third frequency, wherein the first, second, and third frequencies are different;
projection optics configured to project light from the plurality of illumination sources into the waveguide for routing to the viewing area;
a spatial light modulator coupled to the illumination device to control when each of the first, second, and third illuminators are on during an illumination frame;
an ambient light sensor to sense an ambient light level; and
a controller coupled to the ambient light sensor and the spatial light modulator, the spatial light modulator adjusting when each of the first, second, and third illuminators are on during the illumination frame responsive to the controller based on the ambient light level.