US 12,242,045 B2
Optical lens, camera module, and electronic device
Jinhua Zou, Shenzhen (CN); and Ming Li, Shenzhen (CN)
Assigned to OFILM GROUP CO., LTD., Shenzhen (CN); and JIANGXI JINGCHAO OPTICAL CO., LTD., Nanchang (CN)
Appl. No. 17/605,985
Filed by OFILM GROUP CO., LTD., Shenzhen (CN); and JIANGXI JINGCHAO OPTICAL CO., LTD., Nanchang (CN)
PCT Filed Oct. 23, 2020, PCT No. PCT/CN2020/123260
§ 371(c)(1), (2) Date Oct. 22, 2021,
PCT Pub. No. WO2022/082734, PCT Pub. Date Apr. 28, 2022.
Prior Publication US 2022/0308323 A1, Sep. 29, 2022
Int. Cl. G02B 15/14 (2006.01); G02B 13/00 (2006.01)
CPC G02B 15/1465 (2019.08) [G02B 13/0045 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An optical lens, sequentially from an object side to an image side, comprising:
a first lens having a negative focal power;
a second lens having a negative focal power, an object side surface of the second lens being convex in the vicinity of an optical axis, and an image side surface of the second lens being concave in the vicinity of the optical axis;
a third lens having a positive focal power, an object side surface of the third lens being convex in the vicinity of the optical axis;
a fourth lens having a negative focal power;
a fifth lens having a negative focal power;
a sixth lens having a positive focal power, an image side surface of the sixth lens being convex in the vicinity of the optical axis, an object side surface of the sixth lens and the image side surface of the sixth lens being aspherical, and at least one of the object side surface of the sixth lens and the image side surface of the sixth lens having at least one inflection point; and
a seventh lens having a negative focal power;
wherein the optical lens satisfies the following relation:
−5<f2/f1<15, maximum optical distortion ≤10%;
wherein f1 is a focal length of the first lens, and f2 is a focal length of the second lens;
wherein the optical lens satisfies the following relation:
−6.0<R12/R13<−2.5;
wherein R12 is a radius of curvature of the object side surface of the sixth lens at the optical axis, and R13 is a radius of curvature of the image side surface of the sixth lens at the optical axis.