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US 12,603,023 B2Granted
Light modulation for foveated display
AssigneeMeta Platforms Technologies, LLC
InventorsKai-Han Chang, Yu-Jen Wang
Life of this patent
Estimating the term…
Abstract
Gaze data of a user is received. A display zone corresponding to the gaze data is identified. The display zone is a portion of a display pixel array. The display light generated by the display zone is modulated to shift an optical path of the display light within the display zone.
Claims20
A method comprising:
- detecting a gaze angle of an eye of a user;
- identifying a Field of View (FOV) in a foveated area corresponding to the gaze angle;
- associating a corresponding display zone of a display that corresponds with the FOV in the foveated area;
- and
- for the corresponding display zone, modulating display light between a first polarization orientation in a first subframe and a second polarization orientation in a second subframe, wherein a display frame includes the first subframe and the second subframe, and wherein modulating between the first polarization orientation and the second polarization orientation shifts an optical path of the display light in the corresponding display zone between a first direction and a second direction that is nonparallel to the first direction;
- and
- shifting, by an angular correction component, the display light in at least one of the first subframe and the second subframe such that the display light output from the angular correction component is parallel during each of the first subframe and the second subframe.
4 more elements
A device comprising:
- an eye-tracking system configured to detect a gaze angle of an eye of a user;
- a display pixel array configured to generate display light;
- a pixel dithering optical component configured to modulate the display light;
- and
- processing logic configured to:
- receive the gaze angle generated by the eye-tracking system;
- identify a Field of View (FOV) in a foveated area corresponding to the gaze angle;
- associate a corresponding display zone of the display pixel array that corresponds with the FOV in the foveated area;
- and
- for the corresponding display zone, modulate the display light between a first polarization orientation in a first subframe and a second polarization orientation in a second subframe to shift an optical path of the display light in the corresponding display zone between a first direction and a second direction that is nonparallel to the first direction;
- and
- shift, by an angular correction component, the display light in at least one of the first subframe and the second subframe such that the display light output from the angular correction component is parallel during each of the first subframe and the second subframe.
9 more elements
A display comprising:
- a display pixel array configured to generate display light;
- a pixel dithering optical component configured to modulate the display light;
- and
- processing logic configured to drive the pixel dithering optical component to:
- modulate the display light between a first polarization orientation in a first subframe and a second polarization orientation in a second subframe to shift an optical path of the display light emitted by a display zone of the display pixel array between a first direction and a second direction that is nonparallel to the first direction, the display pixel array including a plurality of display zones;
- and
- shift, by an angular correction component, the display light in at least one of the first subframe and the second subframe such that the display light output from the angular correction component is parallel during each of the first subframe and the second subframe.
4 more elements
Dependencies are inferred from the claim text.