Scanning Display Systems
AssigneeApple Inc.
InventorsArman Hajati, Robert S. Upton, Yuval Gerson
Life of this patent
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Abstract
A display system may display image frames. The system may include multiple sets of laser dies. Each set of laser dies may emit a respective set of beams of light to a photonic integrated circuit. Each set of beams may include light in at least three wavelength ranges that include visible and/or infrared wavelengths. Channels in the photonic integrated circuit may receive the sets of beams with a first pitch and may emit the set of beams with a second pitch that is finer than the first pitch and at a given angular separation to tangential and sagittal axis scanning mirrors.
Claims24
A display system configured to display an image frame, the display system comprising:
- first, second, and third sets of laser dies, wherein the first set of laser dies is configured to emit a first set of beams of light, the second set of laser dies is configured to emit a second set of beams of light, and the third set of laser dies is configured to emit a third set of beams of light, wherein the first, second, and third sets of beams each include light in at least three wavelength ranges;
- a photonic integrated circuit, wherein the first, second, and third sets of laser dies are configured to respectively emit the first, second, and third sets of beams into the photonic integrated circuit with a first pitch, and wherein the photonic integrated circuit is configured to emit the first, second, and third set of beams with a second pitch that is finer than the first pitch;
- a first scanning mirror configured to reflect the first, second, and third sets of beams while scanning along a first axis of the image frame;
- and
- a second scanning mirror configured to reflect the first, second, and third sets of beams while scanning along a second axis of the image frame.
Apparatus comprising:
- a first set of light sources configured to emit a first set of beams in at least three wavelength ranges;
- a second set of light sources configured to emit a second set of beams in at least three wavelength ranges;
- a photonic integrated circuit comprising:
- a first set of channels configured to convey the first set of beams and to transmit the first set of beams out of the photonic integrated circuit, and
- a second set of channels configured to convey the second set of beams and to transmit the second set of beams out of the photonic integrated circuit;
- a sagittal axis scanning mirror configured to reflect the first and second sets of beams;
- and
- a tangential axis scanning mirror configured to reflect the first and second sets of beams reflected by the sagittal axis scanning mirror.
Apparatus comprising:
- a first set of laser dies driven by a first laser driver and configured to emit a first set of beams in at least three wavelength ranges;
- a second set of laser dies driven by a second laser driver and configured to emit a second set of beams in at least three wavelength ranges;
- a photonic integrated circuit comprising a first set of channels configured to receive the first set of beams from the first set of laser dies at a first edge of the photonic integrated circuit and comprising a second set of channels configured to receive the second set of beams from the second set of laser dies at a second edge of the photonic integrated circuit, wherein:
- the first set of channels has a first pitch at the first edge,
- the second set of channels has the first pitch at the second edge, and
- the first and second sets of channels have a second pitch at a third edge of the photonic integrated circuit that is less than the first pitch.
Dependencies are inferred from the claim text.