High-resolution and strong fog-penetrating TV camera zoom lens

Abstract

The invention provides a high-resolution and strong-fog-penetrating television camera zoom lens. A positive-optical-power front fixed lens group A, a negative-optical-power zoom-variable lens group B, a positive-optical-power compensating lens group C, a variable diaphragm D, a positive-optical-power rear fixed lens group E and a color filter F are arranged along the direction of light rays. The front fixed lens group A sequentially comprises a first balsaming group formed through the hermetic bonding of a negative meniscus lens A-1 and a biconvex lens A-2, a plano-convex lens A3, and positive meniscus lens A-4. The plano-convex lens A3 is prepared by ultra-low dispersion materials H-FK61. The zoom-variable lens group B sequentially comprises a plano-concave lens B-1, a second balsaming group formed through the hermetic bonding of a biconcave lens B-2 and a positive meniscus lens B-3, and a biconcave lens B-4. The compensating lens group C comprises a biconvex lens C-1, and a third balsaming group formed through the hermetic bonding of a negative meniscus lens C-2 and a biconvex lens C-3. The rear fixed lens group E sequentially comprises a biconcave lens E-1, a positive meniscus lens E-2, a biconvex lens E-3, a negative meniscus lens E-4, and a biconvex lens E-5. The problem in the prior art that a current wide-spectral zoom lens is not high in resolution in the prior art can be solved. The above high-resolution and strong-fog-penetrating television camera zoom lens is excellent strong in fog-penetrating ability.

Description

technical field [0001] The invention relates to the field of optics, in particular to a high-resolution and strong fog-permeable TV camera zoom lens. Background technique [0002] In visible light environments such as fog, dust, and smog, the effective observation distance of ordinary camera lenses will be greatly shortened, and only blurred images can be obtained when using them for imaging, especially when the target contrast is low, it is impossible to "view". The fog-penetrating camera lens produced by using the principle that infrared light can diffract tiny particles can effectively solve the imaging problem under such harsh conditions and greatly improve the long-distance observation effect. However, due to the dispersion of glass materials, the positions of the best image planes of light in different wavelength bands are different, making it difficult for the camera lens to maintain high-resolution imaging in the near-infrared band. As users have higher and higher r...

AI Technical Summary

Problems solved by technology

However, due to the dispersion of glass materials, the positions of the best image planes for different wavelengths of light are different, making it difficult for the camera lens to maintain high-resolution imaging in the near-infrared band

With the user's higher and higher requirements for imaging quality, the current camera zoom lens with low resolution and poor fog penetration ability can no longer meet the needs of users

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