Single chip superluminous light emitting diode array for waveguide displays
AssigneeFacebook Technologies, LLC
InventorMaxwell Parsons
Life of this patent
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Abstract
A source assembly for providing light. The source assembly comprises a source element array, and a scanning mirror assembly. The source element array includes a super luminous diode (SLED) array of SLEDs that are configured to emit light. The SLED array is on a single chip. Each SLED in the SLED array may emit light in the same color channel (e.g., green). There may be multiple SLED arrays that each are on respective chips and each are associated with a different color channel (e.g., one is red, one is blue, and one is green). The scanning mirror assembly is configured to scan light emitted from the SLED array (and/or multiple SLED arrays) to an entrance location of an output waveguide (e.g., of a waveguide display) as scanned image light.
Claims20
A source assembly comprising:
- a source element array comprising a super luminous diode (SLED) array of SLEDs that are arranged on a single chip, the SLED array configured to emit light;
- and
- a scanning mirror assembly configured to scan the light to an entrance location of an output waveguide as scanned image light.
A waveguide display, comprising:
- a source element array comprising a super luminous diode (SLED) array of SLEDs that are arranged on a single chip, the SLED array configured to emit light;
- a scanning mirror assembly configured to scan the light to form scanned image light;
- an output waveguide including an input area and an output area, the output waveguide configured to:
- receive the scanned image light emitted from the scanning mirror assembly at the input area,
- expand the received light in at least one dimension to form expanded image light;
- and
- output the expanded image light from a portion of the output area.
Dependencies are inferred from the claim text.