US 12,345,872 B2
Reflective hollow singlet folded optical lens structure
Zhisheng Yun, Sammamish, WA (US); Ying Geng, Bellevue, WA (US); Fei Liu, Los Altos, CA (US); Daozhi Wang, Dublin, CA (US); Yanming Zhao, Santa Clara, CA (US); and Yusufu Njoni Bamaxam Sulai, Snohomish, WA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed on Apr. 7, 2022, as Appl. No. 17/715,683.
Prior Publication US 2023/0324669 A1, Oct. 12, 2023
Int. Cl. G02B 25/00 (2006.01); G02B 5/30 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01)
CPC G02B 25/001 (2013.01) [G02B 5/3033 (2013.01); G02B 5/3083 (2013.01); G02B 27/0025 (2013.01); G02B 27/0172 (2013.01); G02B 2027/011 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical lens assembly, comprising:
an optical lens configuration comprising a first optical element and a second optical element, wherein:
the first optical element and the second optical element are affixed together along a peripheral edge to form a gap between the first optical element and the second optical element;
the first optical element comprising a first surface of a first optical lens type (L1S1) and a second surface of the first optical lens type (L1S2);
the second optical element comprising a first surface of a second optical lens type (L2S1) and a second surface of the second optical lens type (L2S2);
the first optical element the second optical element are configured to compensate chromatic dispersion characteristics;
a reflective polarizer layer provided on one of the second surface of the first optical lens type (L1S2), the first surface of the second optical lens type (L2S1), or the second surface of the second optical lens type (L2S2);
a quarter wave layer provided on one of the second surface of the first optical lens type (L1S2), the first surface of the second optical lens type (L2S1), the second surface of the second optical lens type (L2S2), or the reflective polarizer layer; and
a semi-transparent mirror provided on one of the first surface of the first optical lens type (L1S1) or the second surface of the first optical lens type (L1S2).