Optical imaging system, module and electronic equipment

Abstract

The invention discloses an optical imaging system, a module and electronic equipment. The optical imaging system includes, in order from an object side to an image side along an optical axis, a first lens, a prism, a second lens, a third lens and a fourth lens; the first lens has negative refractive power; the object-side surface of the first lens is convex at a position close to the optical axis, and the image-side surface of the first lens is concave at a position close to the optical axis; the prism turns an optical path; the prism is provided with a reflecting surface; the second lens has refractive power; the object side surface of the second lens is a convex surface at a position close to the optical axis; the third lens has refractive power, the object side surface of the third lens is a convex surface at a position close to the optical axis; and the fourth lens has refractive power. The optical imaging system meets the following conditional expressions: 0.1 mm <-1><EFL / (TTL21*TTL22)<0.3 mm <-1>. According to the optical imaging system provided by the embodiment of the invention, the light flux is large while the micro design is met, the view field range is large, and the requirements of high-definition images and long-range shooting are met.

Description

technical field [0001] The invention relates to the technical field of imaging technology, in particular to an optical imaging system, a module and electronic equipment. Background technique [0002] With the miniaturization and ultra-thin design of mobile phones, drones, and tablet computers being favored by consumers, the accessories of electronic products are also further compressed to meet the end products, so that the overall volume of optical lenses is compressed and various miniaturized lenses appear. Design products, but if you want to achieve higher-quality camera functions, the excessive compression of the lens volume will sacrifice the imaging quality, so the periscope camera lens has emerged as the times require, without changing the ultra-thin and miniaturized end products without compressing the lens Volume, the possibility of achieving high-definition image shooting effects. [0003] At present, all kinds of periscope lenses occupy a dominant position in high...

AI Technical Summary

Problems solved by technology

However, because the periscope camera lens has a smaller amount of light than ordinary lenses and a smaller field of view, it has become a technical difficulty that needs to be overcome.

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