Light projection system including an optical assembly for correction of differential distortion
AssigneeMeta Platforms Technologies, LLC
InventorsMichael Patrick Schaub, Byron Taylor, Yijing Fu
Life of this patent
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Abstract
A light projection system includes a light source configured to emit image light and an optical assembly configured to provide positive optical power to the image light and optically correct the image light. The optical assembly comprises a plurality of optical elements configured to correct differential distortion related to the image light across a field of view (FOV) within a threshold amount. The differential distortion is corrected based in part on asymmetry of the plurality of optical elements relative to an optical axis shared by the plurality of optical elements.
Claims20
A light projection system comprising:
- a light source configured to emit light;
- and
- an optical assembly comprising a plurality of optical elements configured to correct distortion related to the emitted light across at least one dimension by propagating the emitted light using a field segment across the plurality of optical elements, wherein the field segment is asymmetric relative to an optical axis shared by the plurality of optical elements, and the optical axis does not pass through the field segment of the optical elements.
A near-eye display (NED) comprising:
- a light source configured to emit light;
- an optical assembly configured to provide an optical power to the light and optically correct the light, the optical assembly comprising a plurality of optical elements configured to correct distortion related to the emitted light across at least one dimension by propagating the emitted light using a field segment across the plurality of optical elements, wherein the field segment is asymmetric relative to an optical axis shared by the plurality of optical elements, and the optical axis does not pass through the field segment of the optical elements;
- and
- a scanning mirror configured to scan the optically corrected light in at least one dimension of a field of view and direct the scanned light to an eye-box of the NED corresponding to a location of a user's eye.
Dependencies are inferred from the claim text.