Large target area and large aperture day and night confocal intelligent traffic surveillance lens

A technology of intelligent transportation and large aperture, applied in the direction of optical components, optics, instruments, etc., can solve the problems of high cost aspheric glass lenses and achieve the effect of compact structure

Active Publication Date: 2017-12-19
AZURE PHOTONICS
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  • Abstract
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AI Technical Summary

Problems solved by technology

The high-end lenses with day and night confocal functions are mostly occupied by foreign manufacturers, and there are aspheric glass lenses with high cost in the optical system

Method used

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  • Large target area and large aperture day and night confocal intelligent traffic surveillance lens

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Embodiment Construction

[0016] Such as figure 1 As shown, a large target surface and large aperture day and night confocal intelligent traffic monitoring lens includes lens L1 with negative dioptric power, lens L2 with positive dioptric power, The first cemented group consisting of lens L3 with negative refractive power and lens L4 with positive refractive power, the second cemented group composed of lens L5 with positive refractive power and lens L6 with negative refractive power, aperture stop, negative refractive power The third cemented group consisting of lens L7 of positive refractive power and lens L8 of positive refractive power, the fourth cemented group of lens L9 of positive refractive power, lens L10 of negative refractive power and lens L11 of positive refractive power, and the image plane, the A protective glass F with zero refractive power is provided between the lens L11 and the image plane.

[0017] In this embodiment, the aperture stop is arranged between the lens L6 and the lens L...

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Abstract

The invention relates to a large-target-surface large-aperture day and night confocal intelligent traffic monitoring lens comprising a first gluing group formed by a negative focal power lens L1, a positive focal power lens L2, a negative focal power lens L3 and a positive focal power lens L4, a second gluing group formed by a positive focal power lens L 5 and a negative focal power lens L6, an aperture diaphragm, a third gluing group formed by a negative focal power lens L7 and a positive focal power lens L8, a fourth gluing group formed by a positive focal power lens L9, a negative focal power lens L10 and a positive focal power lens L11 and an image surface, and the first gluing group, the second gluing group, the aperture diaphragm, the third gluing group, the fourth gluing group and the image surface are arranged in a lens cone from an object surface side to an image surface side in turn. Zero focal power protective glass F is arranged between the lens L11 and the image surface. An improved double Gaussian structure of seven groups and eleven pieces is adopted so that the requirement of intelligent traffic all-weather monitoring can be completely met.

Description

technical field [0001] The invention relates to the monitoring field, in particular to a day and night confocal intelligent traffic monitoring lens with a large target surface and large aperture. Background technique [0002] With the continuous development of the intelligent transportation industry and camera technology, the market's requirements for lens quality continue to increase. The relative aperture of the mainstream products currently used in intelligent traffic monitoring is generally not larger than 1 / 1.4, and the target surface is not more than 2 / 3 inch. The high-end lenses with day and night confocal functions are mostly occupied by foreign manufacturers, and there are aspheric glass lenses with high cost in the optical system. Therefore, how to design an intelligent traffic monitoring lens with a large target surface and large aperture using common glass materials and confocal day and night is very necessary. Contents of the invention [0003] The object of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00
CPCG02B13/006G02B13/008
Inventor 林峰王琨
Owner AZURE PHOTONICS
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