Super-depth high-pixel infrared scanning imaging optical system

Abstract

The embodiment of the invention discloses a super-depth high-pixel infrared scanning imaging optical system which is provided with a first lens, a second lens, a third lens, a fourth lens and a fifthlens which are arranged from an object surface to an image surface in turn along the optical axis. The first lens is a biconvex lens of which the focal power is positive. The second lens is a biconcave lens of which the focal power is negative. The object surface side of the third lens is a plane, the image surface side is a convex surface and the focal power is positive. The fourth lens is a biconcave lens of which the focal power is negative. The object surface side of the fifth lens is a concave surface, the image surface side is a convex surface and the focal power is negative. The opticalsystem meets 0.8<TTL / f<=1.2, wherein TTL is the distance between the vertex of the object surface side of the first lens of the optical system and an imaging surface, and f is the focal length of thewhole optical system. The optical system is mainly composed of five lenses so that the structure is simple; and different lenses are mutually combined and the focal power is reasonably allocated so that the optical system has great performance of low cost, low total length, super depth, high pixel, large target surface and great resolution, etc.

Description

Technical field: [0001] The invention relates to an optical system, in particular to an infrared scanning imaging optical system with super depth of field and high pixels. Background technique: [0002] At present, the infrared scanning optical systems used in the market generally have problems such as low pixels, small shooting range, and many application scenarios. Because the lens adopts an all-glass structure, there are still problems such as high cost in mass production and long system length. Invention content: [0003] In order to overcome the common problem of low pixels in existing infrared scanning optical systems, embodiments of the present invention provide an infrared scanning imaging optical system with super depth of field and high pixels. [0004] The ultra-depth-of-field and high-pixel infrared scanning imaging optical system is sequentially provided with: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens along the optical axis fr...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the common problem of low pixels in existing infrared scanning optical systems, an embodiment of the present invention provides an infrared scanning imaging optical system with super depth of field and high pixels

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