US 12,222,473 B2
Low total track length lens assembly including seven lenses of +−+−++− refractive powers for large sensor format
Roy Rudnick, Tel Aviv (IL); Michael Dror, Tel Aviv (IL); and Ephraim Goldenberg, Tel Aviv (IL)
Assigned to Corephotonics Ltd., Tel Aviv (IL)
Filed by Corephotonics Ltd., Tel Aviv (IL)
Filed on Apr. 25, 2024, as Appl. No. 18/645,450.
Application 18/645,450 is a continuation of application No. 18/314,936, filed on May 10, 2023, granted, now 12,000,996.
Application 18/314,936 is a continuation of application No. 17/261,110, granted, now 11,668,910, issued on Jun. 6, 2023, previously published as PCT/IB2020/056923, filed on Jul. 22, 2020.
Claims priority of provisional application 62/889,633, filed on Aug. 21, 2019.
Prior Publication US 2024/0329365 A1, Oct. 3, 2024
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A lens assembly comprising: from an object side to an image side, seven lens elements numbered L1-L7;
an optical window; and
an image sensor having a sensor diagonal length SDL,
wherein the lens assembly has a total track length TTL, an effective focal length EFL, a field of view FOV<90 degrees and a f number f/#<1.8, wherein TTL/EFL<1.100, wherein TTL/SDL<0.64, wherein a focal length f1 of lens element L1 fulfills f1<EFL, wherein the lens element L1 is convex on the object side, wherein each lens element has a clear aperture CA, and wherein the CA of lens elements L3 or L4 is the smallest of all CAs in the lens assembly.