High-precision and wide-environmental-adaptability optical lens

Abstract

The invention relates to the field of cameras, in particular to a high-precision and wide-environmental-adaptability optical lens. The lens comprises a band-pass optical filter, a main lens barrel, anoptical-mechanical structural element group, an airtight barrel and window glass; a band-pass optical filter and a plurality of optical-mechanical structural element groups are sequentially arrangedin the main lens barrel, the airtight cylinder is coated on the main lens barrel, one end of the airtight cylinder is arranged on the main lens barrel, window glass is arranged in the other end of theairtight cylinder, the plurality of optical-mechanical structural element groups are positioned between the band-pass optical filter and the window glass, and each optical-mechanical structural element group comprises a lens and an inner-layer lens barrel; a lens is installed in the inner-layer lens barrel, the inner-layer lens barrel is installed in the main lens barrel, and the plurality of optical-mechanical structural element groups are concentrically installed in the main lens barrel. The lens adopts a lens structure form taking the optical-mechanical structure element group as a basic unit, and has the characteristic of good assembling and adjusting manufacturability, the eccentric precision can reach 5 '' to 10'', the airtightness of the lens is realized, and the internal pressureof the lens is ensured to be within an allowable range when the lens works.

Description

technical field [0001] The invention relates to the field of cameras, in particular to an optical lens with high precision and wide environmental adaptability. Background technique [0002] Optical lens is the basic component of optical imaging and measurement equipment, and the performance of optical lens directly determines the performance of optical system. On the one hand, the performance of the optical lens depends on its own adjustment accuracy, such as eccentricity, tilt, etc. The transfer function of the optical lens with eccentricity or tilt will decrease, which will affect the image quality. On the other hand, it depends on the use environment, such as temperature, pressure, etc. Uneven temperature will cause the curvature of the optical lens optical element and the air gap to change, and the change in air pressure will cause the refractive index of the air gap between the optical lenses to change, which will cause the optical lens Performance drops, affecting ima...

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a high-precision, wide-environment adaptable optical lens to at least solve the technical problem of low imaging quality of existing optical lenses

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