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Large-relative-aperture compact uncooled infrared zoom monitoring lens

An uncooled infrared and relative aperture technology, applied in the field of optical lenses, can solve the problems that are difficult to meet the actual use needs of large relative aperture and large zoom ratio, to ensure infrared night vision performance, reduce axial size, and compact configuration Effect

Active Publication Date: 2022-02-11
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to meet the actual use requirements of large relative aperture, small size and large zoom ratio

Method used

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  • Large-relative-aperture compact uncooled infrared zoom monitoring lens
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  • Large-relative-aperture compact uncooled infrared zoom monitoring lens

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Embodiment Construction

[0030] Embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings.

[0031] Embodiments of the present disclosure are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. The present disclosure can also be implemented or applied through different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, a...

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Abstract

The invention belongs to the technical field of optical lenses, and particularly relates to a large-relative-aperture compact uncooled infrared zoom monitoring lens, which is based on a mechanical compensation method continuous zoom principle, adopts a double-negative-group optical system configuration with negative-group zoom and negative-group compensation, compresses the axial size of an optical path in a one-time imaging mode, and realizes large-zoom-ratio continuous zoom. By adopting the aspheric surface and the diffraction surface, the high-order aberration, the aberration between the on-axis point and the off-axis point, the aberration between the thin light beam and the wide light beam and various chromatic aberration are reduced, and satisfactory image quality is obtained in the full view field and the full aperture. The infrared zoom monitoring lens consists of five groups of lenses, namely the front fixed group, the zoom group, the compensation group and the rear fixed group, and the core of the zoom system is that the change of magnification is realized through the movable lens group.

Description

technical field [0001] The invention belongs to the technical field of optical lenses, in particular to a large relative aperture compact uncooled infrared zoom monitoring lens. Background technique [0002] The uncooled infrared zoom surveillance lens is an imaging system that works in the long-wave infrared band (8-12 μm), the focal length can be continuously changed, the image plane position remains stable, and the image quality remains good during the zooming process. Thermal imaging using the difference and difference in the radiation temperature of different objects in the scene can work in day and night and under adverse weather conditions such as fog, haze, smog, sand and dust, and can greatly expand the day and night visual performance of the human eye. [0003] Infrared zoom monitoring lens works concealed, reliable, and has good environmental adaptability. It has been rapidly developed and widely used in many civil and military monitoring fields such as coal mine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/14G02B13/18G02B15/14G02B15/17
CPCG02B13/14G02B13/18G02B15/145125G02B15/17
Inventor 刘红霞张良崔晓非
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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