US 11,754,809 B2
Optical assembly for a wide field of view point action camera with low field curvature
Russell Hudyma, San Ramon, CA (US); and Michael Thomas, Woburn, MA (US)
Assigned to Navitar, Inc., Rochester, NY (US)
Filed by Navitar Industries, LLC, Rochester, NY (US)
Filed on Aug. 17, 2020, as Appl. No. 16/995,808.
Application 16/995,808 is a continuation of application No. 16/164,807, filed on Oct. 19, 2018, granted, now 10,746,967.
Application 16/164,807 is a continuation of application No. 15/340,960, filed on Nov. 1, 2016, granted, now 10,107,989, issued on Oct. 23, 2018.
Application 15/340,960 is a continuation of application No. 14/215,041, filed on Mar. 16, 2014, granted, now 9,494,772, issued on Nov. 15, 2016.
Prior Publication US 2021/0063700 A1, Mar. 4, 2021
Int. Cl. G02B 13/00 (2006.01); G02B 13/18 (2006.01); G02B 13/06 (2006.01); G02B 5/00 (2006.01); G02B 5/20 (2006.01); G02B 27/00 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 5/005 (2013.01); G02B 5/208 (2013.01); G02B 13/006 (2013.01); G02B 13/06 (2013.01); G02B 13/18 (2013.01); G02B 27/0025 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical assembly for a point action camera having a wide field of view, comprising multiple lens elements including an aspheric surface, configured to provide a field of view in excess of 150 degrees that comprises an inward field curvature of less than 75 microns, wherein the optical assembly comprises from object end to image end:
(a) a first convexo-concave or meniscus lens;
(b) a second convexo-concave or meniscus lens;
(c) a first biconvex lens;
(d) an aperture stop;
(e) a quasi-plano-convex lens;
(f) a plano-concave lens;
(g) a second biconvex lens; and
(h) a convexo-planar aspheric lens.