Cooled three-field infrared thermal imager

An infrared thermal imager, three fields of view technology, used in instruments, scientific instruments, measuring devices, etc., can solve the problems of poor detection performance of infrared thermal imagers, and achieve optical coaxiality, high resolution, and volume. small effect

Inactive Publication Date: 2016-05-04
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a cooling type three-field infrared thermal imag

Method used

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  • Cooled three-field infrared thermal imager
  • Cooled three-field infrared thermal imager
  • Cooled three-field infrared thermal imager

Examples

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Example Embodiment

[0031] In this embodiment, a specific implementation of the optical system is given:

[0032] The rear fixed lens group includes a first fixed mirror 4, a second fixed mirror 5, a third fixed mirror 6, and a fourth fixed mirror 7 arranged in sequence with the optical axis, and the converging lens group includes a first converging lens 12 arranged in sequence with the optical axis. And a second converging mirror 13; the reflecting mirror group includes a reflecting mirror group consisting of a first reflecting mirror 8, a second reflecting mirror 10 and a third reflecting mirror 11 arranged in sequence along the optical path, and a fourth fixed mirror The light emitted from 7 is sequentially reflected by the first reflector 8, the second reflector 10, and the third reflector 11 and then enters the first converging mirror 12. A field diaphragm 9 for passing light signals is provided between the first mirror 8 and the second mirror 10. The detector 14 is arranged on the light path ...

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Abstract

The invention relates to a cooled three-field infrared thermal imager comprising an infrared optical system and a detector imaging assembly. F of the infrared optical system is 4, the narrow-field focal length of the optical system is 137mm, the medium-field focal length is 55mm, and the wide-field focal length is 23mm. The optical system comprises an objective lens, a zoom lens, a compensation lens, a rear fixed lens group and a convergence lens group, all of which are coaxially arranged in sequence. Field switching and focusing are implemented by axially moving the zoom lens and the compensation lens. The thermal imager can be applied to a complex environment. In any complex environment, the image contrast and detail resolution can be effectively improved, the effect of image observation can be significantly improved, and high precision in optical coaxiality, angular offset and optical axis consistency and high reliability in high- and low-temperature environments and vibration environments are realized. In addition, the thermal imager has a simple overall structure, the components of the thermal imager are not complicated, and the goal of low weight and small size is achieved.

Description

technical field [0001] The invention relates to a cooling type three-field infrared thermal imager. Background technique [0002] As the best alternative to manned aircraft for surveillance and reconnaissance, drones are attracting significant investment in some countries. As the infrared sensor for UAV payload, its market demand will grow proportionally with UAV. At present, cooled thermal imaging cameras are bulky. Due to the limitations of take-off weight, volume, and space of small and medium-sized UAVs, most of the infrared sensors equipped with them are uncooled thermal imaging cameras, and their detection performance and imaging effects are limited by devices. . [0003] With the wide application of drones in many fields, the demand for cooling thermal imaging cameras with light weight, small size, long detection distance, high resolution, and three fields of view is becoming more and more urgent. For target recognition, the medium field of view is used for target ...

Claims

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Application Information

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IPC IPC(8): G01J5/00G01J5/08
CPCG01J5/00G01J5/0806G01J2005/0077
Inventor 赵菲菲万敏张广伟石鹏潘晓东
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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