Patent ID: 11960144
Assignee: JIANGXI LIANYI OPTICS CO., LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. The camera module according to claim 12, wherein the optical lens meets at least one of the following expressions:

−0.15<(R21−R22)/(R21+R22)<0.1;

40 mm<f2+f3<70 mm;

0.1<TC23/R22<0.14;

where R21 represents a radius of curvature of the object side surface of the second lens, R22 represents a radius of curvature of the image side surface of the second lens, f2 represents an effective focal length of the second lens, f3 represents an effective focal length of the third lens, and TC23 represents a spacing distance on the optical axis from the image side surface of the second lens to the object side surface of the third lens.