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US 12,707,031 B2Granted
Patch correction for light steering projector
AssigneeBarco Visual Solutions, Inc.
InventorsSamuel Melamed, Martin Gregory Beckett, Raveen Kumaran, Weicheng Yan
Life of this patent
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Abstract
Example embodiments provide systems and methods for correcting non-uniformities of a light beam generated by a multi-emitter light source. In some embodiments a phase modulator displays patch lenses to correct for the non-uniformities. In some embodiments each region of the phase modulator is illuminated by a beam generated by one emitter of the multi-emitter light source. Such region of the phase modulator may display a patch lens for correcting non-uniformities in the corresponding beam which illuminates the region.
Claims22
A projection system comprising:
- one or more light sources operable to emit a plurality of light beams;
- a phase modulator comprising a two-dimensional array of pixels, the pixels controllable to retard phase of light incident on the pixels by variable amounts, the phase modulator having an active area in an optical path of the plurality of light beams, each of the plurality of light beams incident on the active area of the phase modulator in a corresponding one of a plurality of distinct regions of the active area of the phase modulator;
- a controller configured to set the pixels of each of the distinct regions of the phase modulator to display an optical form for a patch lens corresponding to the distinct region, the patch lens is configured to correct for non-uniformities present in the plurality of light beams emitted by the one or more light sources.
Dependencies are inferred from the claim text.