Scanning display with increased uniformity
AssigneeFacebook Technologies, LLC
InventorsVincent BRENNAN, James SMALL, William Anthony WALL, Stephen Warren GORTON, Wanli CHI, Nicholas Daniel TRAIL
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Abstract
A light assembly can have an array of light sources forming rows and columns, where the array comprises a plurality of chips, and each chip comprises a subarray of light sources forming the rows and columns. A boundary between chips in the array can be configured to extend diagonally across rows and columns of the array such that, for each column across which the boundary extends, the first row of the plurality rows may not have a light source disposed in the respective column, but a second row of the plurality of rows has a light source disposed in the respective column.
Claims20
A system comprising:
- a light assembly comprising:
- a plurality of chips;
- and
- an array of light sources disposed on the plurality of chips and forming rows and columns, wherein a boundary between a first chip and a second chip of the plurality of chips extends diagonally across a plurality of the rows of the array and a plurality of the columns of the array such that, for each column of the plurality of the columns of the array:
- a first row of the plurality of the rows does not have a light source disposed in the respective column;
- and
- a second row of the plurality of the rows has a light source disposed in the respective column;
- a mirror configured to rotate about an axis to reflect light emitted by the array of light sources toward an output;
- and
- controller circuitry configured to coordinate rotation of the mirror and emission of light from the array of light sources to create an output light pattern at the output during a scanning period.
A method comprising:
- illuminating a mirror with a light assembly comprising a plurality of chips and an array of light sources disposed on the plurality of chips and forming rows and columns, wherein:
- a boundary between a first chip and a second chip of the plurality of chips extends diagonally across a plurality of the rows of the array and a plurality of the columns of the array such that, for each column of the plurality of the columns of the array:
- a first row of the plurality of the rows does not have a light source disposed in the respective column;
- and
- a second row of the plurality of the rows has a light source disposed in the respective column;
- and
- the mirror is configured to rotate about an axis to reflect light emitted by the array of light sources toward an output;
- and
- controlling rotation of the mirror and emission of light from the array of light sources to create an output light pattern at the output during a scanning period.
A light assembly comprising:
- an array of light sources forming rows and columns, wherein the array comprises a plurality of chips, each chip of the plurality of chips comprising a subarray of the light sources forming the rows and the columns;
- and wherein:
- a boundary between a first chip and a second chip of the plurality of chips extends diagonally across a plurality of the rows of the array and a plurality of the columns of the array such that, for each column of the plurality of the columns of the array:
- a first row of the plurality of the rows does not have a light source disposed in the respective column;
- and
- a second row of the plurality of the rows has a light source disposed in the respective column.
Dependencies are inferred from the claim text.