High-Resolution Zoom Lenses for Intelligent Transportation Systems

An intelligent transportation system and high-resolution technology, which is applied in the field of high-resolution zoom and wide-spectrum confocal lens devices, can solve the problem that video camera lenses are difficult to find for the use of intelligent transportation systems and require camera lenses, and achieve smooth and accurate zoom movement. Accurate, axially accurate results

Active Publication Date: 2011-12-21
FUJIAN FORECAM OPTICS CO LTD
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  • Description
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AI Technical Summary

Problems solved by technology

The video camera technology is a key technology in the intelligent transportation system, and the video camera system is a key equipment in the intelligent transportatio

Method used

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  • High-Resolution Zoom Lenses for Intelligent Transportation Systems
  • High-Resolution Zoom Lenses for Intelligent Transportation Systems
  • High-Resolution Zoom Lenses for Intelligent Transportation Systems

Examples

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Embodiment Construction

[0008] refer to figure 1 and figure 2 , a high-resolution zoom lens for intelligent transportation systems, including a front main lens barrel 1, a middle main lens barrel 2 and a rear main lens barrel 3 arranged in sequence along the incident direction of the light path, incident from left to right along the light The directions are respectively equipped with the front fixed group A with positive power in the front main lens barrel, the zoom group B with negative power in the middle main lens barrel, and the focal power in the rear main lens barrel. The rear fixed group D is positive and the compensation group E is positive in refractive power. A variable diaphragm C is set between the variable power group B and the rear fixed group D; the front fixed group A includes negative crescents in turn. A doublet lens group in which lens A-1 is in close contact with biconvex lens A-2 and positive crescent lens A-3; the zoom group B includes negative crescent lens B-1, biconcave len...

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Abstract

The invention relates to a high-resolution zoom lens for an intelligent transportation system. The high-resolution zoom lens provided by the invention comprises a front main lens cone, a middle main lens cone and a rear main lens cone and is characterized in that a front fixing group A arranged in the front main lens cone, a zooming group B arranged in the middle main lens cone, a rear fixing group D arranged in the rear main lens cone and a compensating group E are respectively arranged along the incidence direction of light rays from left to right; and a variable diaphragm C is arranged between the zooming group B and the rear fixing group D. The lens provided by the invention has the advantages of large zooming ratio, large relative aperture, high resolution, wide spectrum confocal performance and the like, is adaptive to a 1/1.8'' CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) photoelectric sensor, is mainly used for shooting and monitoring the busy traffic stream motion conditions, license plate numbers and jam occasions on roads in real time and is a mainstream product in the intelligent transportation system.

Description

technical field [0001] The invention relates to a high-resolution zoom lens used in an intelligent transportation system, relates to video camera technology in the intelligent transportation system, and in particular relates to a high-resolution zoom wide-spectrum confocal lens device. Background technique [0002] With the development of social economy, the high-speed road network is becoming more and more dense, and the traffic is becoming more and more busy. In order to maintain traffic safety, prevent traffic jams, and achieve orderly under busy road conditions; the development of intelligent transportation systems has practical significance for improving the management level of roads. The video camera technology is a key technology in the intelligent transportation system, and the video camera system is a key equipment in the intelligent transportation system; and the existing video camera lens series is difficult to find a camera lens that can meet the requirements for ...

Claims

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Application Information

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IPC IPC(8): G02B15/173G02B15/20G02B7/10G02B1/00
Inventor 屈立辉许端霞黄霞霞李海军江伟
Owner FUJIAN FORECAM OPTICS CO LTD
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