US 11,850,811 B1
Monolithic compound lens
Kurt Allen Jenkins, Sammamish, WA (US); Chad Lichtenhan, Issaquah, WA (US); Michael Patrick Schaub, Redmond, WA (US); and Byron Taylor, 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 Nov. 26, 2019, as Appl. No. 16/696,934.
Claims priority of provisional application 62/862,888, filed on Jun. 18, 2019.
Int. Cl. B29D 11/00 (2006.01); G02B 13/00 (2006.01); G02B 27/01 (2006.01); B29C 35/08 (2006.01)
CPC B29D 11/00403 (2013.01) [B29C 35/0805 (2013.01); B29D 11/00442 (2013.01); G02B 13/006 (2013.01); G02B 27/0172 (2013.01); B29C 2035/0827 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of fabricating a lens, the method comprising:
providing a first mold cavity;
dispensing a first liquid optically-transmissive material into the first mold cavity;
curing the first liquid optically-transmissive material in the first mold cavity to form a first region of the lens having a first refractive index, wherein the first region includes an optical interface surface;
providing a second mold cavity;
dispensing a second liquid optically-transmissive material into the second mold cavity over the optical interface surface while the first region of the lens is disposed within the second mold cavity; and
curing the second liquid optically-transmissive material in the second mold cavity to form a second region of the lens having a second refractive index, wherein an optical interface between the first region and the second region conforms to the optical interface surface, wherein providing the first mold cavity comprises mating a first die with a second die to define the first mold cavity, and wherein providing the second mold cavity includes:
removing the second die to expose the optical interface surface of the first region; and
mating a third die with the first die to define the second mold cavity.