Optical design of large-caliber large-aperture ultra-long-focus low-light level imaging lens

Abstract

The invention discloses an optical design of a large-caliber large-aperture ultra-long-focus low-light level imaging lens. The lens comprises a main lens barrel, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens are sequentially arranged in the main lens barrel in the light incident direction, and the outer diameters of the lenses are sequentially decreased progressively. Parameters of the large-caliber ultra-long-focus low-light-level imaging lens are obtained through complex optical calculation and design, the focal length of the lens reaches 300 mm, and the lens can be matched with a 1-inch photosensitive chip. Practice proves that the low-light-level night vision imaging lens manufactured through the optical design is clear and sharp in effect, and meanwhile, the light transmittance of the lens is greatly improved, so that imaging equipment can shoot clear and bright images in an extremely weak environment, and the picture quality of dynamic and static monitoring at night is greatly improved.

Description

technical field [0001] The invention relates to the field of lens technology, in particular to the optical design of a large-aperture large-aperture ultra-telephoto low-light imaging lens. Background technique [0002] At present, there is a lack of high-resolution low-light night vision lenses with ultra-telephoto, large aperture, large aperture, and a one-inch target surface on the market. In order to make up for this gap in the market, through the forward-looking optical design, the low-light night vision lens with the above advantages is realized. Contents of the invention [0003] Aiming at the deficiencies and defects of the existing technology, an optical design of a large aperture and large aperture ultra-telephoto low-light imaging lens is provided. Through complex optical calculation and design, the parameters of the large-aperture ultra-telephoto low-light imaging lens are obtained. The focal length of the lens reaches 300mm, which can be adapted to With 1 inch...

AI Technical Summary

Problems solved by technology

[0002] At present, there is a lack of high-resolution low-light night vision lenses with ultra-telephoto, large aperture, large aperture, and one-inch target surface on the market.

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