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High resolution day and night confocal zoom aspheric lens

A high-resolution, aspheric lens technology, applied in the field of optical camera devices, to achieve the effects of miniaturization and light weight, solving the distortion of the field of view, and reducing aberration and chromatic aberration

Active Publication Date: 2017-11-21
FUJIAN FORECAM OPTICS CO LTD
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  • 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 zoom aspheric lens
  • High resolution day and night confocal zoom aspheric lens

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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 a positive crescent aspheric lens B-1, a double-convex lens B-2, a plano-concave lens B-3, and a 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 t...

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Abstract

The invention relates to a high-resolution day and night confocal zoom aspheric lens. The optical system of the lens is provided with the front group A of the lens group with a negative focal power and a positive focal power along the incident direction of the light from left to right. 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 a positive crescent aspheric lens B-1, a double-convex lens B-2, a plano-concave lens B-3, and a double-convex aspheric surface arranged in sequence from left to right Lens B-4. The high-resolution day and night confocal zoom aspheric lens achieves the function of changing the focal length of the optical system through the corresponding movement of the front group A and the rear group B along the optical axis.

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. 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 society for monitoring systems. Co...

Claims

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Application Information

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Patent Type & Authority Patents(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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