US 11,953,702 B1
Nanovoided graded-index optical elements, optical arrays, and methods of forming the same
Andrew John Ouderkirk, Kirkland, WA (US); Kenneth Alexander Diest, Kirkland, WA (US); and Renate Eva Klementine Landig, Redmond, 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. 25, 2022, as Appl. No. 17/822,367.
Application 17/822,367 is a division of application No. 16/426,737, filed on May 30, 2019, granted, now 11,448,798.
Claims priority of provisional application 62/777,825, filed on Dec. 11, 2018.
Int. Cl. G02B 3/00 (2006.01); B29D 11/00 (2006.01); G02B 1/04 (2006.01); G02B 5/04 (2006.01); G02B 27/01 (2006.01); B29K 105/04 (2006.01)
CPC G02B 3/00 (2013.01) [B29D 11/00355 (2013.01); G02B 1/041 (2013.01); G02B 3/0012 (2013.01); G02B 5/045 (2013.01); G02B 27/0172 (2013.01); B29K 2105/04 (2013.01); B29K 2995/0026 (2013.01); G02B 3/0087 (2013.01); G02B 2027/0178 (2013.01); G02B 2207/101 (2013.01); G02B 2207/107 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An optical array comprising:
a plurality of graded-index optical elements each comprising a nanovoided material having a first surface and a second surface opposite the first surface, wherein:
the nanovoided material is transparent between the first surface and the second surface; and
the nanovoided material has a predefined change in effective refractive index in at least one axis due to a change in at least one of nanovoid size or nanovoid distribution along the at least one axis.