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US 12,001,013 B2Granted
Pixel intensity modulation using modifying gain values
AssigneeMagic Leap, Inc.
InventorsRichard Stephen Johnston, Brian T. Schowengerdt
Life of this patent
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Abstract
A visual perception device has a look-up table stored in a laser driver chip. The look-up table includes relational gain data to compensate for brighter areas of a laser pattern wherein pixels are located more closely than areas where the pixels are further apart and to compensate for differences in intensity of individual pixels when the intensities of pixels are altered due to design characteristics of an eye piece.
Claims18
A visual perception device comprising:
- a data store;
- relational gain data stored in the data store and representing a plurality of reference locations and a plurality of gain values, each gain value corresponding to a respective reference location;
- a video data receiver connectable to a video data channel to receive video data including a plurality of pixels;
- a correlator connected to the relational gain data and the video data receiver and operable to correlate each pixel with a reference location in the relational gain data to find a gain value corresponding to the respective pixel;
- a beam modulator connected to the video data receiver and the correlator and operable to modify an intensity value of the respective pixel based on the gain value for the respective pixel to determine a modulated gain value for the respective pixel;
- and
- a laser projector connected to the beam modulator and operable to generate a respective beam of light and transmit the beams of light in a pattern wherein the beams of light are spatially separated in two dimensions with the respective beams of light in the two dimensions being modulated according to the respective modulated gain values of each respective one of the pixels.
4 more elements
Dependencies are inferred from the claim text.