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Surface source black body radiation source based on pulse tube refrigerator

A technology of a pulse tube refrigerator and a surface source black body, which is applied in the field of calibrating infrared thermal imaging cameras or infrared radiation thermometers, can solve problems such as inability to calibrate infrared thermal imaging cameras, and achieve simple structure, fast cooling rate, and high temperature good control stability

Active Publication Date: 2013-12-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing blackbody radiation source cannot calibrate the infrared thermal imager or infrared radiation thermometer at a temperature below 243K, and then provide a surface source blackbody radiation source based on a pulse tube refrigerator

Method used

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  • Surface source black body radiation source based on pulse tube refrigerator
  • Surface source black body radiation source based on pulse tube refrigerator
  • Surface source black body radiation source based on pulse tube refrigerator

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Experimental program
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specific Embodiment approach 1

[0010] Specific implementation mode one: combine Figure 1-Figure 3 Describe this embodiment, the surface source blackbody radiation source based on the pulse tube refrigerator in this embodiment includes a pulse tube refrigerator 1 and a blackbody 5, and the surface source blackbody radiation source also includes a heating film 4, a soaking plate 3, and a vacuum chamber 2. Vacuum device 7, support member 8 and a plurality of temperature sensors 6, the black body 5 is disc-shaped, and the vacuum chamber 2 is provided with a black body 5, a heating film 4 and a uniform temperature plate 3 in sequence from top to bottom, and the black body 5 and the soaking plate 3 are coaxially arranged, the heating film 4 is attached to the surface of the black body 5 adjacent to the soaking plate 3, and the end of the cold head 1-1 of the pulse tube refrigerator 1 passes through the vacuum chamber The bottom plate of 2 is connected with the uniform temperature plate 3, the upper surface of th...

specific Embodiment approach 2

[0012] Specific implementation mode two: combination figure 2 and image 3 The present embodiment will be described. The upper surface of the black body 5 of the present embodiment has a multi-circle groove 5-1. The upper surface of this embodiment is also the radiating surface of the black body, so that the emissivity of the black body radiation source is improved, and the emissivity is greater than 0.91. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0013] Specific implementation mode three: combination figure 2 and image 3 To describe this embodiment, the multi-turn grooves 5-1 in this embodiment are all concentric annular V-shaped grooves. Such setting greatly improves the emissivity of the blackbody radiation source, and the emissivity is greater than 0.96. Others are the same as in the second embodiment.

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Abstract

The invention discloses a surface source black body radiation source based on a pulse tube refrigerator, relates to a device for calibrating a thermal infrared imager or an infrared radiation temperature measurer, and aims to solve the problem that the conventional black body radiation source cannot calibrate the thermal infrared imager or the infrared radiation temperature measurer at the temperature of below 243 K. The surface source black body radiation source comprises the pulse tube refrigerator, a black body, a heating film, a temperature equalizing disk, a vacuum chamber, a vacuum device, a supporting piece and a plurality of temperature sensors, wherein the black body, the heating film and the temperature equalizing disk are sequentially arranged in the vacuum chamber from top to bottom; the heating film is adhered to the surface of the black body, which is adjacent to the temperature equalizing disk; the end of a cold head of the pulse tube refrigerator penetrates through a bottom plate of the vacuum chamber and is connected with the temperature equalizing disk; the upper surface of the bottom plate of the vacuum chamber is connected with the supporting piece; the black body and the temperature equalizing disk are respectively supported by the supporting piece; a plurality of temperature sensors are arranged on the peripheral wall of the black body; and the vacuum chamber is detachably connected with the vacuum device. The surface source black body radiation source based on the pulse tube refrigerator is used for calibrating the thermal infrared imager or the infrared radiation temperature measurer.

Description

technical field [0001] The invention relates to a device for calibrating an infrared thermal imager or an infrared radiation thermometer, in particular to a surface source blackbody radiation source used for calibrating an infrared thermal imager or an infrared radiation thermometer. Background technique [0002] At present, infrared thermal imaging cameras or infrared radiation thermometers have been used in various fields of national economy from aerospace, aviation and national defense. Calibrating infrared thermal imaging cameras or infrared radiation thermometers requires a blackbody radiation source with good performance. However, the existing blackbody radiation sources cannot calibrate infrared thermal imaging cameras or infrared radiation thermometers at temperatures below 243K, which seriously hinders It expands the application field of infrared thermal imager or infrared radiation thermometer. Contents of the invention [0003] The purpose of the present invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/00
Inventor 戴景民王强张清森
Owner HARBIN INST OF TECH