Medium-wave infrared dual field-of-view integration thermal imaging system

A thermal imaging and infrared technology, applied in the direction of installation, measuring devices, instruments, etc., can solve the problems of short focal length of the lens and short detection distance of the system, and achieve the effect of large relative aperture, long focal length and beautiful appearance

Active Publication Date: 2011-08-10
FUJIAN FORECAM OPTICS CO LTD
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  • Application Information

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Problems solved by technology

But there is only a single field of view, and in the fully transmission infrared camera lens, the focal length of the lens is short, and the detection distance of the system is short

Method used

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  • Medium-wave infrared dual field-of-view integration thermal imaging system
  • Medium-wave infrared dual field-of-view integration thermal imaging system
  • Medium-wave infrared dual field-of-view integration thermal imaging system

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Embodiment Construction

[0015] refer to figure 1 , a medium-wave infrared two-stage integrated thermal imaging system, characterized in that: the optical path structure is provided with a fixed mirror group A, a switching mirror group B and a focusing mirror group C along the incident direction of the light from left to right, The fixed mirror group A is provided with a positive crescent lens A-1 and a negative crescent lens A-2 in turn; the switching mirror group B is provided with interchangeable telephoto lens groups B-long and short focal lens groups B - short, the telephoto lens group B-long is sequentially provided with a positive crescent lens B-long-1, a negative crescent lens B-long-2, a negative crescent lens B-long-3, and a plano-concave lens B-long -4 and positive crescent lens B-long-5, the short focus lens group B-short is provided with negative crescent lens B-short-1, positive crescent lens B-short-2, negative crescent lens B -Short-3, plano-concave lens B-short-4 and positive cresce...

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Abstract

The invention relates to a medium-wave infrared dual field-of-view integration thermal imaging system. In an optical path structure of the system, a fixed lens group A, a changing-over lens group B and a focusing lens group C are arranged along the incidence direction of light rays from left to right, wherein the fixed lens group A is sequentially provided with a positive crescent-shaped lens A-1 and a negative crescent-shaped lens A-2; the changing-over lens group B is provided with a long locus lens group B-long and a short focus lens group B-short which can be changed mutually; the long locus lens group B-long is sequentially provided with a positive crescent-shaped lens B-long-1, a negative crescent-shaped lens B-long-2, a negative crescent-shaped lens B-long-3, a plane concave lens B-long-4 and a positive crescent-shaped lens B-long-5; the short focus lens group B-short is sequentially provided with a negative crescent-shaped lens B-short-1, a positive crescent-shaped lens B-short-2, a negative crescent-shaped lens B-short-3, a plane concave lens B-short-4 and a positive crescent-shaped lens B-short-5; and the focusing lens group C is formed by the a positive crescent-shaped lens.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, and relates to a mid-wave infrared optical camera device, in particular to a mid-wave infrared two-stage integrated thermal imaging system. Background technique [0002] Infrared imaging has the advantages of long working distance at night; good anti-interference performance; better environmental adaptability than visible light; strong ability to penetrate smoke, dust and haze; and can work all-weather and all-day. In the past 10 to 15 years, infrared thermal imaging technology has been widely used in military, paramilitary and civilian fields, and various specifications of infrared camera lenses matched with it have also emerged as the times require. But there is only a single field of view, and in the fully transmission infrared camera lens, the focal length of the lens is short, and the detection distance of the system is short. Contents of the invention [0003] The purpose of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/08G01J5/02G02B13/14G02B13/06G02B7/02G02B7/04
Inventor 肖维军林春生周宝藏黄统樑郑炜亮
Owner FUJIAN FORECAM OPTICS CO LTD
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