US 12,001,078 B2
Folded cameras with continuously adaptive zoom factor
Nadav Goulinski, Tel Aviv (IL); Roy Rudnick, Tel Aviv (IL); Ephraim Goldenberg, Tel Aviv (IL); Itay Yedid, Tel Aviv (IL); Michael Dror, Tel Aviv (IL); Itay Manor, Tel Aviv (IL); and Ziv Shemesh, Tel Aviv (IL)
Assigned to Corephotonics Ltd., Tel Aviv (IL)
Appl. No. 17/925,857
Filed by Corephotonics Ltd., Tel Aviv (IL)
PCT Filed Mar. 20, 2022, PCT No. PCT/IB2022/052515
§ 371(c)(1), (2) Date Nov. 17, 2022,
PCT Pub. No. WO2022/200965, PCT Pub. Date Sep. 29, 2022.
Claims priority of provisional application 63/300,067, filed on Jan. 17, 2022.
Claims priority of provisional application 63/177,427, filed on Apr. 21, 2021.
Claims priority of provisional application 63/164,187, filed on Mar. 22, 2021.
Prior Publication US 2023/0393370 A1, Dec. 7, 2023
Int. Cl. G02B 7/10 (2021.01); G02B 13/00 (2006.01); G02B 13/02 (2006.01); G03B 17/17 (2021.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01); H04N 23/68 (2023.01); H04N 23/69 (2023.01)
CPC G02B 7/10 (2013.01) [G02B 13/0045 (2013.01); G02B 13/02 (2013.01); G03B 17/17 (2013.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01); H04N 23/687 (2023.01); H04N 23/69 (2023.01)] 56 Claims
OG exemplary drawing
 
1. A camera, comprising:
an optical path folding element (OPFE) for a folding a first optical path (OP1) to second optical path (OP2);
a lens including a plurality of lens elements, the lens being divided into four lens groups arranged along a lens optical axis and marked, in order from an object side of the lens to an image side of the lens, a first lens group (G1), a second lens group (G2), a third lens group (G3) and a fourth lens group (G4); and
an image sensor,
wherein the camera is a folded Tele camera,
wherein the lens elements in each of lens groups G1, G2, G3 and G4 do not move with respect to each other,
wherein G1 and G3 do not move with respect to each other,
wherein G2 and G4 do not move with respect to each other,
wherein the Tele camera is configured to change a zoom factor (ZF) continuously between a minimum zoom factor (ZFMIN) corresponding to a minimal effective focal length (EFLMIN) and a maximum zoom factor (FMAX) corresponding to a maximal effective focal length (EFLMAX) by moving G1 and G3 together relative to the image sensor and by moving G2 and G4 together relative to the image sensor,
wherein ZFMAX/ZFMIN≥2,
wherein switching from EFLMIN to EFLMAX or vice versa requires a lens stroke range S, and
wherein a ratio R given by R=(EFLMAX−EFLMIN)/S fulfils R>2.