Super wide-angle athermalized day and night lens and its working method

Abstract

The invention relates to an ultra-wide-angle athermalized day and night lens and its working method, which comprises a front group A, a diaphragm C, a rear group B, a parallel plate, and an IMA image plane arranged sequentially along the incident direction of light from left to right. The front group A includes a first meniscus negative lens and a second meniscus positive lens arranged in sequence, and the rear group B includes a first biconvex positive lens, a second biconvex positive lens, and a third meniscus negative lens arranged in sequence , the second meniscus positive lens of the front group A, the second biconvex positive lens of the rear group B and the third meniscus negative lens are plastic aspheric mirrors; the present invention also relates to a super wide-angle athermalized day and night lens working method. The invention has the advantages of simple and reasonable structure, small volume, ultra-wide angle, athermalization, dual-purpose day and night, and high resolution.

Description

Technical field: [0001] The invention relates to an ultra-wide-angle athermalized day-night dual-purpose lens and a working method thereof. Background technique: [0002] In recent years, as the application range of camera lenses has become more and more extensive, people have higher and higher requirements for the pixels and field of view of home lenses, as well as day and night dual-use; but the existing lenses generally have such shortcomings: the field of view Small, poor pixel and day-night dual-use effect, need to install one or even a few more lenses to achieve athermalization and day-night dual-use effect; small aperture, can not meet the minimum imaging illumination requirements of CCD chips under low illumination and cannot be clear The imaging and external dimensions are larger and take up more space. Contents of the invention [0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an ultr...

AI Technical Summary

Problems solved by technology

[0002] In recent years, as the application range of camera lenses has become more and more extensive, people have higher and higher requirements for the pixels and field of view of home lenses, as well as day and night dual-use; but the existing lenses generally have such shortcomings: the field of view Small, poor pixel and day-night dual-use effect, need to install one or even a few more lenses to achieve athermalization and day-night dual-use effect; small aperture, can not meet the minimum imaging illumination requirements of CCD chips under low illumination and cannot be clear Imaging, larger size, more space

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