Medium-wave refrigeration type infrared imaging system capable of achieving passive temperature control and assembly method thereof
An infrared imaging system and refrigeration type technology, applied in radiation pyrometry, measuring devices, instruments, etc., can solve problems such as affecting imaging quality and not suitable for refrigeration type infrared imaging systems, so as to ensure the detection effect, improve the thermal insulation effect, The effect of reducing heat transfer
Pending Publication Date: 2020-01-24
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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[0004] The main purpose of the present invention is to solve the technical problem that the medium-wave cooled infrared imaging system will affect the imaging quality when the temperature is high, and the existing passive thermal control device is not suitable for the cooled infrared imaging system. Controlled mid-wave cooled infrared imaging system and assembly method thereof
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[0039] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Apparently, the described embodiments do not limit the present invention.
[0040] Such as figure 1 and figure 2 , a mid-wave cooling infrared imaging system that can realize passive temperature control, wherein the mid-wave cooling infrared imaging system includes a mid-wave infrared optical lens 5 and a mid-wave infrared detector 7, as well as imaging circuit components, etc., and the mid-wave infrared detector 7 is connected to the rear end of the mid-wave infrared optical lens 5. During installation, in order to support the mid-wave infrared detector 7 and make the mid-wave infrared detector 7 stable, an L-shaped support is arranged outside the mid-wave infrared detector 7. seat 8. It also includes a heat transfer assembly 3, a housing 1 and a base 6; the housing 1 is sleeved ou...
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The invention belongs to a medium-wave refrigeration type infrared imaging system, and provides a medium-wave refrigeration type infrared imaging system capable of achieving passive temperature control and an assembly method thereof for solving the technical problem that the imaging quality is affected when a medium-wave refrigeration type infrared imaging system is at a high temperature, and an existing passive thermal control device is not applicable to a refrigeration type infrared imaging system. A housing is arranged outside a medium-wave infrared optical lens in a sleeving way, wherein the front end of the housing is hermetically provided with an infrared optical window through a window seat, and the rear end is hermetically connected with the outer surface of a medium-wave infrareddector to form a hermetic cavity among the infrared optical window, the medium-wave infrared optical lens, the medium-wave infrared detector and the housing; a first cushion block is mounted between an L-shaped support and a refrigerator of the medium-wave infrared detector; a second cushion block is mounted between a base and the L-shaped support; and one end of a heat pipe is inserted in the first cushion block, and the other end is inserted in the second cushion block. The assembly method aims to meet the airtightness of the above devices and the accuracy of the system.
Description
technical field [0001] The invention belongs to a medium-wave cooling infrared imaging system, and in particular relates to a medium-wave cooling infrared imaging system capable of realizing passive temperature control and an assembly method thereof. Background technique [0002] In the case of ambient temperature -70°C ~ +70°C, when long-distance and large-scale detection of faint targets in the medium-wave band is carried out, the illuminance generated by the thermal radiation of the imaging system on the image plane will increase with the increase of the operating temperature of the imaging system. As the temperature increases, the background noise of the system will also increase, and the signal-to-noise ratio will decrease. After analysis, the operating temperature of the system must be controlled below a specific temperature to meet the requirements of the signal-to-noise ratio. , power consumption and imaging system field of view and other factors are limited. Theref...
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IPC IPC(8): G01J5/00G01J5/02
CPCG01J5/00G01J5/0245G01J5/024G01J2005/0077G01J5/068
Inventor 张洪伟陈卫宁史魁马迎军武力张高鹏
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI