Small ultra-wide-angle, high-pixel and low-distortion prime lens and camera

Abstract

The invention discloses a small ultra-wide-angle, high-pixel and low-distortion prime lens and a camera. The prime lens sequentially comprises a first lens group with negative focal power and a second lens group with positive focal power from an object side to an image side, the first lens group comprises at least two lenses with negative focal power and at least one lens with positive focal power; wherein in the negative focal power lenses included in the first lens group, at least one aspheric lens is arranged; the second lens group comprises at least two lenses with negative focal power and at least three lenses with positive focal power; wherein the second lens group comprises at least one group of combined lenses, and the combined lenses are combined lenses of one negative-focal-power lens included in the second lens group and one positive-focal-power lens included in the second lens group; moreover, in the positive focal power lenses included in the second lens group, at least two aspheric lenses are included.

Description

technical field [0001] The present invention relates to the technical field of lenses, in particular to a small, ultra-wide-angle, high-pixel, low-distortion fixed-focus lens and a camera. Background technique [0002] In recent years, with the rapid development of the network data transmission industry, the demand for consumer electronic products such as intelligent monitoring, drone shooting, video conferencing, distance education, and indoor AI products has been expanding. Distortion lens development is the general trend. [0003] Similar mainstream lenses on the market have the following disadvantages: small field of view; large optical distortion, resulting in scene distortion; large lens size; Cannot be clearly distinguished; the imaging target surface is small; the existing ultra-wide-angle, large target surface, high-pixel, low-distortion lenses are far from enough for more demanding use scenarios. SUMMARY OF THE INVENTION [0004] The purpose of the present inve...

AI Technical Summary

Problems solved by technology

[0003] Similar mainstream lenses currently on the market have the following disadvantages: small field of view; large optical distortion, resulting in scene distortion; large lens size; low resolution, and now the mainstream uses chips with 2 million to 5 million pixels, resulting in insufficient resolution of some scenes Unable to distinguish clearly; the imaging target surface is small; the existing ultra-wide-angle, large target surface, high pixel, and low distortion lenses are far from enough for more demanding usage scenarios

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