US 11,054,646 B1
Head-mounted display device with Fresnel lenses
Victoria C. Chan, Sunnyvale, CA (US); John N. Border, Campbell, CA (US); Jeffrey C. Olson, San Francisco, CA (US); Yury A. Petrov, Half Moon Bay, CA (US); Edward S. Huo, Sunnyvale, CA (US); and Brandon Clarke, Sunnyvale, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Feb. 1, 2018, as Appl. No. 15/886,623.
Claims priority of provisional application 62/504,729, filed on May 11, 2017.
Int. Cl. G02B 27/01 (2006.01); G02B 27/09 (2006.01); G06T 19/00 (2011.01)
CPC G02B 27/0172 (2013.01) [G02B 27/0955 (2013.01); G02B 2027/0178 (2013.01); G06T 19/006 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A lens having a maximum lateral dimension with opposing first and second ends, comprising:
a center dome portion; and
an outer Fresnel lens portion that radially surrounds the center dome portion and that has slope facets and draft facets, wherein the draft facets are coated with absorptive material, wherein the slope facets are free of the absorptive material, and wherein the center dome portion and the outer Fresnel lens portion have a wedge shaped cross-sectional profile in which the outer Fresnel lens portion has a first thickness at the first end of the maximum lateral dimension of the lens and a second thickness at the second end of the maximum lateral dimension of the lens, the first thickness being greater than the second thickness.