Wide-width high-resolution visible light lens optical system

Abstract

The invention relates to a wide-width high-resolution visible light lens optical system, which is sequentially provided with a first lens group with a positive focal length, a second lens group with a negative focal length, an iris diaphragm, a third lens group with a positive focal length, a fourth lens group with a positive focal length, a fifth lens group, a sixth lens group with a negative focal length and a photosensitive image surface from an object side to an image side, wherein the first lens group as a focusing group moves back and forth relative to the second lens group according to an object distance to realize a focusing effect, so that light from an object is refocused on the photosensitive image surface; the second lens group, the iris diaphragm, the third lens group, the fourth lens group, the fifth lens group and the sixth lens group all fix the photosensitive image surface; and the first lens of the second lens group and the first lens of the fourth lens group are aspheric lenses. In the scheme, aberration can be corrected and distortion can be reduced through the aspheric lens, so that the optical system can obtain high image quality during wide-image-width imaging.

Description

technical field [0001] The invention relates to the technical field of aerial remote sensing optical lens, in particular to a wide-width and high-resolution visible light lens optical system. Background technique [0002] At present, transmissive lenses are widely used in the field of aerial remote sensing. The current market is developing in the direction of large image area, high resolution and high image quality. In order to obtain large-scale coverage and high-resolution aerial remote sensing images, more pixels, The photosensitive image plane with smaller pixels and larger target size is one of the fundamental ways to solve the problem, but the current aerial remote sensing lenses have the following shortcomings: [0003] Ordinary optical lenses cannot meet the 200mm image size required for aerial remote sensing. Currently, large image lenses on the market, such as lenses with an image size of about 1″, have an image size of 16.0mm. In order to achieve wide-format aeria...

AI Technical Summary

Problems solved by technology

[0003] Ordinary optical lenses cannot meet the 200mm image size required for aerial remote sensing. Currently, large image lenses on the market, such as lenses with an image size of about 1″, have an image size of 16.0mm. In order to achieve wide-format aerial remote sensing , multiple lens splicing schemes are often used, and the volume and weight of the system are uncontrollable, which seriously hinders the application and development of aerial remote sensing technology;

[0004] The long-distance high-resolution imaging of aerial remote sensing requires the focal length of the lens to be greater than 300mm. At present, the large-format optical lenses on the market, such as lenses of about 1″, have a short focal length and cannot meet the needs.

[0005] At present, most of the high-definition optical lenses on the market are 1080p, with 2 million pixels. However, for aerial remote sensing line array imaging with 36,000 pixels and area array imaging with more than 1.2 billion pixels, the current market lenses cannot meet the demand.

[0006] Optical lenses currently on the market only eliminate lens aberrations in the visible spectral range. Aerial remote sensing requires optical lenses to image in a wide spectral range from visible light to near-infrared to obtain better low-light imaging effects. Eliminate optical system aberrations in the spectral range

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