High pixel fish eye optical system and shooting module group thereof

Abstract

The invention discloses a high pixel fish eye optical system. The high pixel fish eye optical system is, from an object surface to an image surface, sequentially provided with a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens along an optical axis. The object surface side of the first lens and the object surface side of the second lens are convex surfaces, and the image surface side of the first lens and the image surface side of the second lens are concave surface, and the focal power of the first lens and the focal power of the second lens are negative. The object surface side of the third lens is a concave surface, the image surface side of the third lens is a convex surface, and the focal power of the third lens is negative. The object surface side of the fourth lens, the object surface side of the fifth lens, and the object surface side of the seventh lens are the convex surfaces, and the image surface side of the fourth lens, the image surface side of the fifth lens, and the image surface side of the seventh lens are the convex surfaces, and the focal power of the fourth lens, the focal power of the fifth lens, and the focal power of the seventh lens are positive. The fifth lens and the sixth lens are glued together to form a combination lens, and the focal length f56 of the combination lens satisfies a following condition: 0.08<f / f56<0.17, and the f is the focal length of the whole optical system. The invention also provides a shooting module group. The high pixel fish eye optical system and the shooting module group have advantages of simple structure, small size, large aperture, large visual angle, and high pixels of more than 16 megapixels.

Description

Technical field: [0001] The invention relates to an optical system and a camera module for its application, in particular to a high-pixel fisheye optical system and a camera module for its application. Background technique: [0002] Existing fisheye optical systems or lenses used in panoramic VR cameras or monitoring fields have the defects of complex structures, large volumes, and insufficient pixels. Invention content: [0003] In order to overcome the problem of complex structures of existing fisheye optical systems or lenses, embodiments of the present invention provide a high-pixel fisheye optical system on the one hand. [0004] A high-pixel fisheye optical system is provided in sequence along the optical axis from the object plane to the image plane: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens; [0005] The object plane side of the first lens is a convex surface, the image plane side is a concave surface,...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem of complex structures of existing fisheye optical systems or lenses, the embodiments of the present invention provide a high-pixel fisheye optical system on the one hand

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