Wide-angle day and night confocal type athermalization optical system and camera shooting module applied by optical system

Abstract

The embodiment of the invention discloses a wide-angle day and night confocal type athermalization optical system, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens in sequence from an object surface to an image surface along an optical axis, wherein the object surface side of the first lens and the object surface side of the second lens are both convex surfaces, the image surface side of the first lens and the image surface side of the second lens are bot concave surfaces, 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 sixth lens are all convex surfaces, the imagesurface side of the fourth lens, the image surface side of the fifth lens and the image surface side of the sixth lens are all convex surfaces, and the focal power of the fourth lens, the focal powerof the fifth lens and the focal power of the sixth lens are negative; the seventh lens is a biconcave lens of which the focal power is negative; and the eighth lens is a biconvex lens of which the focal power is positive. In addition, the embodiment of the invention also provides a camera shooting module. The optical system and the camera shooting module of the invention mainly consist of eight lens, so that the amount of lenses is small, the structure is simple, and therefore, the invention is suitable for the field of police law enforcement instruments and intelligent monitoring.

Description

[0001] Technical field: [0002] The invention relates to an optical system and an applied camera module, in particular to a wide-angle day and night confocal athermalized optical system and an applied camera module. [0003] Background technique: [0004] Existing optical systems or modules used in the fields of police body enforcement devices and intelligent monitoring generally have the defects of too many lenses and complex structures. [0005] Invention content: [0006] In order to overcome the problems of too many lenses and complicated structures in the existing optical systems or modules used in the field of police body enforcement instruments and intelligent monitoring, the embodiments of the present invention provide a wide-angle day and night confocal athermalization optical system. [0007] A wide-angle day and night confocal athermalized optical system, comprising: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a first ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems of too many lenses and complicated structures in the existing optical systems or modules used in the field of police body enforcement instruments and intelligent monitoring, the embodiments of the present invention provide a wide-angle day and night confocal athermalization optical system

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