Adaptive illuminator sequencing
AssigneeSnap Inc.
InventorRajeev Ramanath
Life of this patent
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Abstract
An eyewear device is disclosed including an illumination device including illumination sources, each illumination source including a first illuminator, a second illuminator, and a third illuminator, and 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. The spatial light modulator is adapted to turn on the first illuminator while the second and third illuminators are off, turn on the second illuminator while the first and third illuminators are off, turn on the third illuminator while the first and second illuminators are off during a third time period of the illumination frame, and turn on the first, second and third illuminators during a fourth time period. An illumination method is also disclosed.
Claims20
An eyewear device comprising:
- a lens defining a waveguide;
- a support structure adapted to be worn on a 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 current controller coupled to the illumination device to control current to each of the first, second, and third illuminators;
- a temperature sensor to sense temperature associated with the illumination device;
- and
- a controller coupled to the temperature sensor and the current controller, the current controller individually adjusting current to each of the first, second, and third illuminators responsive to the controller based on the sensed temperature.
An illumination method for an illumination device in an eyewear device, the illumination method comprising:
- sensing temperature associated with illumination sources of the illumination device, 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;
- and
- illuminating, with a controller, the illumination sources by selectively controlling current to the first, second, and third illuminators using a current controller based on the sensed temperature.
A non-transitory computer readable medium including instruction for illuminating illumination sources of a device, the instructions, when executed by a controller, configure the device to:
- sense temperature associated with the illumination sources of the device, 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;
- and
- illuminate the illumination sources by selectively controlling current to the first, second, and third illuminators using a current controller based on the sensed temperature.
Dependencies are inferred from the claim text.