Large-aperture ultra-wide-angle high-definition lens and camera device comprising same

Abstract

The invention discloses a large-aperture ultra-wide-angle high-definition lens and camera equipment comprising the same. The large-aperture ultra-wide-angle high-definition lens sequentially comprisesa first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an optical filter from an object plane to an image plane along the optical axis. The lens is compact in structure and small in boundary dimension, the weight of the lens is greatly reduced, the cost is reduced, and the research and development period is shortened. According to the invention, the aberration of the lens system is corrected to a large extent, the MTF resolution is high, it is guaranteed that high definition is achieved on the whole image plane, even imaging can be achieved, the lens can be matched with 1 / 2.5 chips (eight million pixels or above), the field angle of the lens reaches 160 degrees or above, the FNO reaches 1.2, the luminous flux is large, and the camera shooting effect at night is better.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a large-aperture ultra-wide-angle high-definition lens and an imaging device including the lens. Background technique [0002] In the field of security, the network camera is a common equipment in the security system, and the lens is the main component of the network camera. The performance of the lens directly affects the imaging quality and imaging field of view. With the development of society, the requirements for the technical indicators of the security monitoring lens are constantly improving. , especially the requirements for imaging quality at night are getting higher and higher. The aperture of the ultra-wide-angle lens of the existing solution is generally around 2.0, and the field of view of the ultra-large aperture lens of the existing solution is generally below 100 degrees. For better results, the aperture must be increased. However, the combination of larg...

AI Technical Summary

Problems solved by technology

[0005] 1. Small field of view (<100°);

[0006] 2. The aperture is small (FNO=1.70), and the shooting effect at night is poor;

[0007] 3. MTF resolution is low

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