A small f‑θ distortion, high resolution optical system

Abstract

The invention discloses a small-f-theta-distortion and high-resolution optical system. In sequence from an object side to an image side, the small-f-theta-distortion and high-resolution optical system includes: a first lens which is a falcate spherical lens; a second lens which is a falcate aspherical lens; a third lens which is a biconcave spherical lens; a fourth lens which is a biconvex aspherical lens; a diaphragm; a fifth lens which is a biconvex aspherical lens; a sixth lens which is a biconvex spherical lens; a seventh lens which is a biconcave spherical lens; an eighth lens which is a biconvex aspherical lens; an optical filter; and a photosensitive chip. The small-f-theta-distortion and high-resolution optical system provided by the invention is large in wide angle, small in f-theta distortion and high in resolution.

Description

[0001] 【Technical field】 [0002] The invention relates to a small f-theta distortion, high-resolution optical system. [0003] 【Background technique】 [0004] At present, the optical systems used in security and vehicles generally have such shortcomings: large f-θ distortion of the lens, low resolution, and insufficient field of view. The current lens generally has to sacrifice other aspects of performance while improving certain aspects of performance. For example, in order to achieve a large field of view, the f-θ distortion performance is sacrificed, resulting in large f-θ distortion and reduced resolution. The image is either less than ideal in terms of realism, or overall not clear enough. Moreover, when a lens with large f-theta distortion shoots a three-dimensional object, the objects around the image plane have obvious asymmetric deformation, etc., which are far from meeting the image clarity and authenticity required by monitoring and vehicle systems, so the lens has...

AI Technical Summary

Problems solved by technology

[0004] At present, there are such shortcomings in security and vehicle optical systems: large f-θ distortion of the lens, low resolution, and insufficient field of view

The current lens generally has to sacrifice other aspects of performance while improving certain aspects of performance. For example, in order to achieve a large field of view, the f-θ distortion performance is sacrificed, resulting in large f-θ distortion and reduced resolution. The image is either not as realistic as the image is ideal, or the overall image is not clear enough

Moreover, when a lens with large f-theta distortion shoots a three-dimensional object, the objects around the image plane have obvious asymmetric deformation, etc., which are far from meeting the image clarity and authenticity required by monitoring and vehicle systems, so the lens has not yet been overcome. A lens with all the shortcomings of large f-θ distortion, low resolution, and insufficient field of view

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