US 11,994,694 B2
Microlens array with tailored sag profile
Roei Remez, Tel Aviv (IL); Keith Lyon, San Jose, CA (US); Niv Gilboa, Raanana (IL); Ronen Akerman, Sunnyvale, CA (US); and Scott T. Smith, San Jose, CA (US)
Assigned to APPLE INC., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Oct. 24, 2021, as Appl. No. 17/509,001.
Claims priority of provisional application 63/138,469, filed on Jan. 17, 2021.
Prior Publication US 2022/0229210 A1, Jul. 21, 2022
Int. Cl. G02B 3/00 (2006.01); G02B 3/02 (2006.01); G03B 21/20 (2006.01); H01S 5/02253 (2021.01); H01S 5/183 (2006.01); H01S 5/323 (2006.01); H01S 5/42 (2006.01)
CPC G02B 3/0037 (2013.01) [G02B 3/02 (2013.01); G03B 21/2033 (2013.01); G03B 21/208 (2013.01); H01S 5/02253 (2021.01); H01S 5/18305 (2013.01); H01S 5/423 (2013.01); G02B 2003/0093 (2013.01); H01S 5/32316 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An optical device, comprising:
a first array of emitters disposed on a substrate and configured to emit respective beams of optical radiation in a direction perpendicular to the substrate; and
a second array of microlenses positioned on the substrate in alignment with the respective beams of the emitters and having respective sag profiles that vary over an area of the substrate, the second array comprising at least first microlenses in a central region of the substrate and second microlenses in a peripheral region of the substrate, such that the first microlenses have respective positive first focal powers, while the second microlenses have respective negative second focal powers.