Compact type fog-penetrating high-definition television zoom lens

Abstract

The invention relates to a compact type fog-penetrating high-definition television zoom lens and belongs to the field of photoelectric technology. The compact type fog-penetrating high-definition television zoom lens is characterized in that lens components sequentially arranged along the incidence direction of light include a front fixed lens group with positive focal power, a zoom lens group with negative focal powder, a compensation lens group with negative focal powder, an iris diaphragm, a rear fixed lens group with positive focal powder and a color filter; the front fixed lens group is sequentially provided with a gluing group and a positive crescent lens, and the gluing group is formed by a negative crescent lens and a biconvex lens which are closely connected; the zoom lens group is provided with a plano-concave lens and a second gluing group, and the second gluing group is formed by a biconcave lens and a second biconvex lens which are closely connected; the compensation lens group is provided with a third gluing group, and the third gluing group is formed by a second biconcave lens and a second positive crescent lens which are closely connected; the rear fixed lens group is sequentially provided with a third biconvex lens, a fourth gluing group, a third positive crescent lens and a second negative crescent lens, and the fourth gluing group is formed by a fourth biconvex lens and a third biconcave lens which are closely connected. By the compact type fog-penetrating high-definition television zoom lens, the defects that the resolution of a current wide-spectrum zoom lens cannot be matched with a high-definition camera, the detecting ability of the wide-spectrum zoom lens is lowered greatly in thick weather such as rain, snow and mist, and the image contrast and definition are affected evidently are overcome.

Description

technical field [0001] The invention relates to a compact fog-penetrating high-definition television zoom lens, which belongs to the field of optoelectronic technology. Background technique [0002] When the ordinary camera lens is used in harsh weather conditions such as rain, snow, smog, etc., the detection distance of the system will be greatly shortened, especially when the target signal itself is very weak and submerged in the background signal, the camera lens will be completely unusable; Due to the dispersion of glass materials, the optimal image plane positions for different wavelengths of light are inconsistent, which makes it difficult for commonly used imaging lenses in the visible light band to maintain high-quality imaging in the near-infrared band; Features such as low resolution and large size. [0003] With the increasingly higher requirements of end users for image quality and the continuous reduction of image sensor pixel size, photoelectric video surveill...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a compact fog-penetrating high-definition television zoom lens, which overcomes the fact that the resolution of the current wide-spectrum zoom lens cannot be adapted to the high-definition camera and the detection ability is seriously reduced in rain, snow, mist and other haze weather. The defects that the contrast and definition are significantly affected; and overcome the defects that the system volume is too large when the zoom factor is large

Images