US 12,411,345 B1
Vector scanning augment reality
Brandon Michael Hellman Friedman, Redmond, WA (US); and Brian Wheelwright, Sammamish, WA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed on Jul. 12, 2024, as Appl. No. 18/771,872.
Int. Cl. G09G 5/00 (2006.01); G02B 27/01 (2006.01)
CPC G02B 27/0172 (2013.01) 20 Claims
OG exemplary drawing
 
1. A head-mounted display system comprising:
a light source configured to emit a light beam;
a scanner configured to steer the light beam;
a waveguide display configured to receive the light beam from the scanner and direct the light beam towards an eyebox of the head-mounted display system;
one or more processors electrically coupled to the light source and the scanner; and
one or more memory devices storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations including:
determining, based on content of an image, a vector scanning pattern for displaying the image, wherein the vector scanning pattern includes a plurality of scan lines and one or more transition lines connecting the plurality of scan lines, and wherein at least one transition line of the one or more transition lines includes a curved section;
generating control signals for controlling the scanner to steer the light beam according to the vector scanning pattern; and
generating modulation signals for modulating the light source such that the light beam is turned on when the scanner operates according to the plurality of scan lines and is turned off when the scanner operates according to the one or more transition lines.