Large-target-surface high-precision mold high-definition zooming monitoring lens

Abstract

The invention relates to a large-target-surface high-precision mold high-definition zooming monitoring lens. An optical system of the lens is provided with a front lens battery A with negative focal power, an iris diaphragm C and a rear lens battery B with positive focal power in sequence in the light incidence direction. The front lens battery A is provided with a negative meniscus lens A-1 and a first bonding lens battery in sequence, wherein the first bonding lens battery is composed of a biconcave lens A-2 and a biconvex lens A-3 in a sealed connection mode. The rear lens battery B is provided with a biconvex lens B-1, a negative meniscus lens B-2, a negative meniscus lens B-3, a second bonding lens battery and a third bonding lens battery in sequence, wherein the second bonding lens battery is composed of a biconvex lens B-4 and a biconcave lens B-5 in a sealed connection mode, and the third bonding lens battery is composed of a biconvex lens B-6 and a negative meniscus lens B-7 in a sealed connection mode. According to the large-target-surface high-precision mold high-definition zooming monitoring lens, the focal power of the front lens battery A and the focal power of the rear lens battery B are distributed reasonably, and the two bonding lens batteries are adopted in the rear lens battery B, so that the lens meets the performance indexes of large relative aperture, wide angle, small structure length, large surface and high-definition pixels.

Description

technical field [0001] The invention relates to a camera lens device of a miniature video camera system, in particular to a high-definition zoom monitoring lens with a large target surface and a high-precision mold. Background technique [0002] It has been 20 to 30 years since the appearance of small TV surveillance cameras. After years of innovation and development, different series of camera lenses with various specifications and models have been formed to support them. However, the performance indicators of these lenses vary from good to bad, and are far from meeting the needs of the high-end market. Large target area, high resolution, and high quality have become what customers need. At the same time, with the rapid development of science and technology, the gradual improvement of people's safety awareness, and the rapid development of security engineering, people's requirements for lens quality are getting higher and higher, and in terms of monitoring, a wider range of...

AI Technical Summary

Problems solved by technology

However, the performance indicators of these lenses vary from good to bad, and are far from meeting the needs of the high-end market. Large target area, high resolution, and high quality have become what customers need.

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