Optical lens, camera module and terminal camera

A camera module, comprising 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 sequentially comprises:

• a first lens with a negative focal power, wherein an object side surface of the first lens is convex, and an image side surface of the first lens is concave;
• a stop;
• a second lens with a positive focal power, wherein an object side of the second lens is convex, and an image side surface of the second lens is concave;
• a third lens with a positive focal power, wherein an object side surface of the third lens is convex, and an image side surface of the third lens is concave;
• a fourth lens with a positive focal power, wherein both an object side surface of the fourth lens and an image side surface of the fourth lens are convex;
• a fifth lens with a negative focal power, wherein an object side surface of the fifth lens is convex at a paraxial region thereof and has at least one inflection point, and an image side surface of the fifth lens is concave at a paraxial region thereof and has at least one inflection point;
• and
• a filter;
• wherein the optical lens meets an expression:
• 2.0 mm<(TTL/IH)*f<2.2 mm;
• where TTL represents a distance from the object side surface of the first lens to an imaging plane of the optical lens on the optical axis, IH represents an actual image height of the optical lens on the imaging plane, and f represents an effective focal length of the optical lens.

A terminal camera, comprising a camera module, a processor, and a memory, wherein the camera module is configured to capture one or more images, the processor is configured to process the captured images, and the memory is configured to store the captured images;

• the camera module comprises an optical lens and an image sensor opposite to the optical lens, from an object side to an image side along an optical axis, the optical lens sequentially comprising:
• a first lens with a negative focal power, wherein an object side surface of the first lens is convex, and an image side surface of the first lens is concave;
• a stop;
• a second lens with a positive focal power, wherein an object side of the second lens is convex, and an image side surface of the second lens is concave;
• a third lens with a positive focal power, wherein an object side surface of the third lens is convex, and an image side surface of the third lens is concave;
• a fourth lens with a positive focal power, wherein both an object side surface of the fourth lens and an image side surface of the fourth lens are convex;
• a fifth lens with a negative focal power, wherein an object side surface of the fifth lens is convex at a paraxial region thereof and has at least one inflection point, and an image side surface of the fifth lens is concave at a paraxial region thereof and has at least one inflection point;
• and
• a filter;
• wherein the optical lens meets an expression:
• 2.0 mm<(TTL/IH)*f<2.2 mm;
• where TTL represents a distance from the object side surface of the first lens to an imaging plane of the optical lens on the optical axis, IH represents an actual image height of the optical lens on the imaging plane, and f represents an effective focal length of the optical lens.