Compact Fog-Through HDTV Zoom Lens

Abstract

The invention relates to a compact fog-penetrating high-definition television zoom lens, which belongs to the field of optoelectronic technology. The lens components sequentially arranged along the incident direction of light include a front fixed lens group with positive focal power and a zoom lens with negative focal power. group, a compensation lens group with negative refractive power, an iris diaphragm, a rear fixed lens group with positive refractive power, and a color filter lens. group, a positive crescent lens; the variable power lens group is provided with a plano-concave lens, a second cemented group that is closely connected by a biconcave lens and a second biconvex lens; the compensation lens group is provided with a second biconcave lens and a second positive crescent lens Closed third cemented group; the rear fixed lens group is sequentially provided with a third double-convex lens, a fourth double-convex lens closely connected with a third double-concave lens, a third positive crescent lens, and a second negative crescent lens. It overcomes the defects that the resolution of the current wide-spectrum zoom lens cannot be adapted to high-definition cameras, and the detection ability is seriously reduced in rain, snow, mist and other hazy weather, and the image contrast and clarity are significantly affected.

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

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