A miniaturized mid-wave infrared cooling continuous zoom lens and optical system

A zoom lens and medium wave technology, applied in the field of optical lenses, can solve the problems of high control precision, low transmittance, and low zoom ratio, and achieve the effect of small size, high transmittance, and low control precision requirements

Active Publication Date: 2021-11-26
西安中科立德红外科技有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of the existing infrared continuous zoom system, such as low zoom ratio, low system overall transmittance, heavy weight, complex structure, and high control precision requirements, and to provide a miniaturized mid-wave infrared cooling continuous Zoom lens and optical system

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  • A miniaturized mid-wave infrared cooling continuous zoom lens and optical system
  • A miniaturized mid-wave infrared cooling continuous zoom lens and optical system
  • A miniaturized mid-wave infrared cooling continuous zoom lens and optical system

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] The invention provides a miniaturized mid-wave infrared cooling continuous zoom lens, figure 1 Its structural diagram includes a lens unit, a detector protection window G, and an optical filter H arranged sequentially along the optical path from the object side to the image side; the lens unit includes four groups of lenses arranged sequentially along the optical path, respectively having a positive optical focus The front fixed group with negative power, the zoom group with negative power, the compensation group with positive power, and the relay group with positive power.

[0044] The front fixed group includes a meniscus positive lens A with a convex surface facing the object side arranged in sequence along the optical path, and a meniscus negative lens B with a convex surface facing the object side for converging light; the zoom group is a do...

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Abstract

The invention relates to a miniaturized mid-wave infrared cooling continuous zoom lens and an optical system. The purpose of the present invention is to solve the technical problems of the existing infrared continuous zoom system, such as low zoom ratio, low system overall transmittance, heavy weight, complex structure, and high control precision requirements, and to provide a miniaturized mid-wave infrared cooling continuous Zoom lens and optical system. The lens includes a lens unit, a detector protection window G, and an optical filter H arranged sequentially along the optical path from the object side to the image side; , Zoom group with negative optical power, compensation group with positive optical power, relay group with positive optical power. The optical system employs the aforementioned lenses. The lens is a miniaturized infrared continuous zoom lens with short overall length, few lenses, simple structure, convenient assembly and high zoom ratio, which solves the contradiction between structural assembly difficulty and miniaturization in the existing infrared continuous zoom lens.

Description

technical field [0001] The invention relates to an optical lens, in particular to a miniaturized mid-wave infrared cooling continuous zoom lens and an optical system. Background technique [0002] Infrared detection system has developed rapidly in recent years and has a wide range of applications. The continuous zoom lens can realize large field of view search and small field of view tracking, and the size of the scene on the image plane can be continuously changed to achieve the needs and effects that fixed-focus lenses cannot meet. For infrared continuous zoom systems, there are two common types: long-wave uncooled and medium-wave cooled. Due to the advantages of medium-wave bands and cooled detectors, the imaging quality of medium-wave cooled is much better than that of long-wave uncooled continuous zoom systems, and it is more widely used. . [0003] At present, the research on medium-wave continuous zoom lens is also extensive. The Chinese patent with the publication...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/173G02B15/14G02B1/14G02B1/11
CPCG02B1/11G02B15/173G02B1/14G02B15/144113
Inventor 王柯平刘伟闫福文郭得福王鹏焦洋洋
Owner 西安中科立德红外科技有限公司
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