Infrared detection device applying counter-compensation heat dissipation design

A technology of infrared detection and temperature compensation, applied in measuring devices, installation, optical radiation measurement, etc., can solve the problems of unstable matching accuracy, complex processing technology, large volume, etc., to save energy consumption and raw materials, high processing precision, Excellent compensation effect

Inactive Publication Date: 2010-09-15
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

From the traditional mechanical compensation design, it can be seen that one is bulky and heavy, and the other is that most of them perform movement compensati

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  • Infrared detection device applying counter-compensation heat dissipation design
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  • Infrared detection device applying counter-compensation heat dissipation design

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[0023] The present invention adopts the mechanical passive heat dissipation, that is, the structure reverse compensation form, adopts a temperature compensation cylinder, fixes the infrared lens as a whole in the temperature compensation cylinder with screws, and uses the screws and the infrared thermal imager installation frame together with the temperature compensation cylinder The connection surface on the connection. Since the infrared thermal imager is fixed inside the metal with low expansion coefficient, the change of its focal plane position is very small and negligible. The axial movement of the infrared optical system image plane position is realized by relying on the axial movement caused by the temperature change of the temperature compensation cylinder. compensate.

[0024] The traditionally applied mechanical passive heat dissipation design is to install one or several groups of lenses that need to be moved on the guide rail, and connect them to the shell through...

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Abstract

The invention provides an infrared detection device applying counter-compensation heat dissipation design, ensuring that the whole focal length of an optical system is unchanged or slightly changed when an external temperature changes in a certain range, thereby keeping favorable imaging quality. The infrared detection device also comprises a temperature comprehension tube, an infrared lens is wholly and coaxially arranged in the temperature comprehension tube which is in rigid connection with a lens cone at one end of a thermal imager, and the material expansion coefficient of the temperature comprehension tube ensures that the axial stretching of the temperature comprehension tube and the rear intercept generated by the infrared optical system have the same size and opposite directions when the external temperature changes in a range of 40 DEG C below zero to 60 DEG C. The invention has simple and convenient design, excellent comprehension effect and higher reliability and can be applied to any infrared optical system under adverse mechanical and temperature environments, such as aviation and aerospace, and the like.

Description

technical field [0001] The invention relates to the heat dissipation design of an infrared detection system, in particular to an infrared detection device using the anti-compensation heat dissipation design. Background technique [0002] With the development of infrared technology, the quality requirements for infrared optical systems are getting higher and higher. Under different temperature conditions, due to the thermal effect of optical materials and mechanical materials, some parameters of the optical system will change accordingly, and then the best image plane of the system will deviate, and the original aberration correction state will be destroyed. affect the performance of the optical system. This temperature-induced performance degradation is called the thermal effect or temperature effect of the optical system. Therefore, in the process of designing the optical system, certain athermal technology must be adopted to eliminate the influence of temperature effect,...

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Application Information

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IPC IPC(8): G02B27/00G02B7/04G02B13/14G02B1/00G01J5/08
Inventor 张兆会曹剑中董森屈恩世张海峰范哲源
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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