Pattern projector
AssigneeApple Inc.
InventorsRefael Della Pergola, Roei Remez, Assaf Avraham, Yuval Tsur, Yazan Alnahhas
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Abstract
An optoelectronic apparatus includes a semiconductor substrate and multiple arrays of emitters disposed on the semiconductor substrate and configured to emit beams of optical radiation. An optical substrate is mounted over the semiconductor substrate. An optical metasurface disposed on the optical substrate includes multiple optical apertures. Each aperture is configured to receive, collimate and split the beams emitted by a respective array of the emitters into a respective group of collimated sub-beams, so as to direct the collimated sub-beams toward a target at different, respective angles to form a pattern of spots on the target.
Claims20
An optoelectronic apparatus, comprising:
- a semiconductor substrate;
- multiple arrays of emitters disposed on the semiconductor substrate and configured to emit beams of optical radiation;
- an optical substrate mounted over the semiconductor substrate;
- and
- an optical metasurface disposed on the optical substrate and comprising multiple optical apertures, each aperture configured to receive, collimate and split the beams emitted by a respective array of the emitters into a respective group of collimated sub-beams, so as to direct the collimated sub-beams toward a target at different, respective angles to form a pattern of spots on the target, the pattern comprising multiple replicas, tiled across the target, of the multiple arrays of the emitters.
A method for optical projection, comprising:
- mounting on a semiconductor substrate multiple arrays of emitters configured to emit beams of optical radiation;
- mounting over the semiconductor substrate an optical substrate having an optical metasurface disposed thereon, the optical metasurface comprising multiple optical apertures, each aperture configured to receive, collimate and split the beams emitted by a respective array of the emitters into a respective group of collimated sub-beams, so as to direct the collimated sub-beams toward a target at different, respective angles to form a pattern of spots on the target, the pattern comprising multiple replicas, tiled across the target, of the multiple arrays of the emitters.
Dependencies are inferred from the claim text.