Pick-up lens group

Abstract

The invention discloses a pick-up lens group. The pick-up lens group sequentially comprises a first lens with negative focal power, a second lens with focal power, a third lens with positive focal power, a fourth lens with focal power and a fifth lens with positive focal power from an object side to an image side along an optical axis; the object side surface of the first lens is a concave surface, and the image side surface of the first lens is a concave surface; the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface;the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface; the fourth lens has focal power; the fifth lens has positive focal power, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, the object side surface of the sixth lens is a convex surface, and the image side surfaceof the sixth lens is a concave surface; half of the SemiFOV of the field angle of the pick-up lens group and half of the ImgH of the diagonal length of the effective pixel area on the imaging surfaceof the pick-up lens group satisfy the following relational expression that: 10.00 mm<tan2(Semi-FOV)*ImgH<23.50 mm; the maximum distortion of the pick-up lens group is less than 3.50%.

Description

technical field [0001] The present application relates to the field of optical elements, and more specifically, to a camera lens group. Background technique [0002] With the rapid development of science and technology, portable smart devices represented by mobile phones are becoming more and more popular, and people's interest and demand for using mobile phones to take pictures or videos is also increasing. With the continuous development of mobile phone lenses, it is an inevitable trend to replace cameras with high-quality camera phones. [0003] One advantage of mobile phones over cameras is that mobile phones have developed to dual-camera, triple-camera, quadruple-camera or even five-camera, and algorithms are combined to improve image quality. The current mainstream mobile phone lens configuration generally includes a large image lens, a telephoto lens, and a wide-angle lens. The wide-angle lens has a short focal length but a large viewing angle. At the same shooting ...

AI Technical Summary

Problems solved by technology

The wide-angle lens has a short focal length but a large viewing angle. At the same shooting distance, it can capture a larger area of ​​the scene, but there is a relatively serious perspective distortion, and at the same time, the sense of distance between the front and rear scenes increases.

Even with auxiliary algorithm corrections, it is difficult to solve the distortion problem

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