US 12,259,557 B2
Optically powered lens assembly for head-mounted devices
Sho Nakahara, Bothell, WA (US); Garret Odom, Tucson, AZ (US); and Carl Chancy, Seattle, WA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed on Aug. 24, 2023, as Appl. No. 18/237,753.
Claims priority of provisional application 63/408,447, filed on Sep. 20, 2022.
Prior Publication US 2024/0094533 A1, Mar. 21, 2024
Int. Cl. G02B 27/01 (2006.01); G02B 1/10 (2015.01); G02B 3/00 (2006.01); G02B 3/08 (2006.01); G02B 27/00 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 1/10 (2013.01); G02B 3/0087 (2013.01); G02B 3/08 (2013.01); G02B 27/0093 (2013.01); G02B 2027/0178 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A head-mounted device comprising:
a frame; and
a lens assembly configured to be carried by the frame, wherein the lens assembly includes:
a lens bulk;
an edge thickness having a predetermined thickness value that is configured to be compatible with the frame; and
a power layer configured to be set to one of a plurality of predetermined power levels while maintaining the edge thickness within the predetermined thickness value, wherein the power layer is configured to define a course power level of the lens assembly, wherein the predetermined thickness value includes the edge thickness of both the lens bulk and the power layer together and is an initial value set to be maintained when the power level is adjusted by physical modification of the lens bulk or the power layer and wherein the predetermined thickness value is in a range of 1.0 mm to 4 mm.