Patent ID: 11877043
Assignee: JIANGXI LIANYI OPTICS CO., LTD
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 19:
20. A camera, comprising:
a camera module, configured to capture one or more images;
a processor, configured to process the captured one or more images; and
a memory, configured to store the captured one or more images;
wherein the camera module comprises an optical lens and an image sensor opposite to the optical lens;
wherein from an object side to an image side along an optical axis, the optical lens comprises:
a first lens having a positive focal power, wherein an object side surface of the first lens is convex;
a second lens having a negative focal power;
a third lens having a negative focal power;
a fourth lens having a negative focal power:
a fifth lens having a positive focal power, wherein an object side surface of the fifth lens is convex at a paraxial region thereof, and an image side surface of the fifth lens is concave at a paraxial region thereof;
a stop disposed between the second lens and the third lens; and
a filter disposed between the fifth lens and an imaging plane;
wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens are all plastic aspherical lenses, and the optical lens satisfies expressions:

0.8<CT2-i/CT2<1.2;

3<f5/f<6;

where CT2-i is a thickness at any position of the second lens along a normal direction, CT2 is a center thickness of the second lens, f5 is a focal length of the fifth lens, and f is a focal length of the optical lens.