a camera lens

Abstract

The invention discloses an image taking shot. The image taking shot comprises four lens which are made of plastic, each surface of the lens is respectively in an aspheric surface, the lens successively comprises a first plus lens, a second concave lens, a third plus lens, and a fourth concave lens along the incidence direction of the ray, wherein the first plus lens is provided with a first surface which is convex to the object direction and a second surface which is convex to the image direction; the second concave lens is provided with a third surface which is concave to the object direction and a fourth surface which is concave to the image direction; the third plus lens is provided with a fifth surface which is concave to the object direction and a sixth surface which is convex to the image direction; and the fourth concave lens adopts the double-peak structure and is provided with a seventh surface which is concave to the object direction and an eighth surface which is convex to the image direction. For the shot, through the reasonable allocation manner of the lens group, the length of the shot can be effectively shortened, the aperture of the shot can be enlarged, the sensitivity of the system can be reduced, and the better imaging quality can be obtained in the environment of low light.

Description

technical field [0001] The invention relates to the field of lens design, in particular to an imaging lens. Background technique [0002] With the rapid development of the mobile phone industry, more and more manufacturers are pursuing thinner and lighter mobile phone bodies to attract consumers' attention. Among them, one of the key factors affecting the thickness of the mobile phone body is the optical length of the mobile phone lens. It is difficult to integrate a lens with a large optical length into a thinner and lighter mobile phone body. In addition, with the development of electronic technology, the pixel size of the photosensitive chip in the lens of the mobile phone is continuously reduced, which makes the imaging quality of the lens of the mobile phone more and more high in the low-light environment, and the lens with the large aperture structure can often make more The light reaches the photosensitive chip, thereby improving the image quality. [0003] How to f...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the mobile phone industry, more and more manufacturers are pursuing thinner and lighter mobile phone bodies to attract consumers' attention. Among them, one of the key factors affecting the thickness of the mobile phone body is the optical length of the mobile phone lens. It is difficult to integrate a lens with a large optical length into a thinner and lighter mobile phone body

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