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High resolution day and night confocal zooming aspheric lens and focusing method thereof

A high-resolution, aspheric lens technology, applied in the field of optical imaging devices, achieves high resolution, short structure length, and reduces aberration and chromatic aberration

Active Publication Date: 2015-12-16
FUJIAN FORECAM OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a resolution is far from meeting the requirements of the current high-definition cameras and the quality requirements of the society for the monitoring system.

Method used

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  • High resolution day and night confocal zooming aspheric lens and focusing method thereof
  • High resolution day and night confocal zooming aspheric lens and focusing method thereof

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as Figure 1~2 As shown, a high-resolution day and night confocal zoom aspheric lens, in the optical system of the lens, along the incident direction of light from left to right, the front group A of the lens group with negative focal power and positive focal power The rear group B of the lens group, a diaphragm C is arranged between the front group A and the rear group B, and the front group A includes a negative crescent lens A-1, a negative double-concave aspheric surface arranged in sequence from left to right Lens A-2, double-convex lens A-3; the rear group B includes negative crescent aspheric lens B-1, double-convex lens B-2, plano-concave lens B-3, double-convex aspheric surface arranged in sequence from left to right Lens B-4.

[0023] In this embodiment, the short-focus air gap between the front group A and the rear grou...

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Abstract

The invention relates to a high resolution day and night confocal zooming aspheric lens. The optical system of the lens is successively provided with a negative focal power lens set front set A and a positive focal power lens set rear set B from a left incidence direction to a right incidence direction along a luminous beam; a diaphragm C is arranged between the front set A and the rear set B; the front set A comprises a negative crescent shaped lens A-1, a negative double-concave aspheric lens A-2, and a double-convex lens A-3 which are successively arranged from left to right, and the rear set B comprises a negative crescent shaped aspheric lens B-1, a double-convex lens B-2, a plano-concave type lens B-3, and a double-convex aspheric lens B-4 which are successively arranged from left to right. The high resolution day and night confocal zooming aspheric lens correspondingly moves back and forth through the front set A and the rear set B, and changes the focal length of the optical system.

Description

technical field [0001] The invention relates to the field of optical imaging devices of video technology, in particular to a high-resolution day and night confocal zoom aspheric lens and a focusing method thereof. Background technique [0002] With the increasingly dense traffic network and increasingly busy traffic, in order to maintain traffic safety, prevent traffic jams, and achieve orderly under busy road conditions, it is of practical significance to provide a high-resolution lens for the development of intelligent transportation systems. The early fixed-focus lens has simple structure and low performance indicators. In terms of image definition, it can only be adapted to standard-definition CCD or CMOS cameras with 200,000 to 300,000 pixels. The needs of "seeing" can't even read the license plate number and the characteristics of the characters. Such a resolution can no longer meet the requirements of high-definition cameras and the quality requirements of the societ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B7/02G02B7/04G02B15/14
CPCG02B7/021G02B7/04G02B13/18G02B15/14
Inventor 郭江龙张世忠林宁王超
Owner FUJIAN FORECAM OPTICS CO LTD
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