Infrared integrating sphere normal emissivity measurement module

Abstract

An infrared integrating sphere normal emissivity measuring module solves the problems that a mechanical chopping structure of a traditional infrared integrating sphere measuring device is poor in stability, a light path adjusting structure is complex, and the normal emissivity cannot be measured, and comprises an infrared module A and a measuring ball B, wherein the infrared module A comprises a circuit board, a pyroelectric detector and an MEMS film light source, a gold-plated off-axis parabolic reflector of the MEMS film light source faces an object to be measured, the bottom shell is a gold-plated spherical reflector, and the heating surface is located at the focus of the gold-plated off-axis parabolic reflector; the pyroelectric detector is coaxial with the circuit board and is attached to the surface at the inner side of the circuit board. An integrating sphere B adopts a symmetrical double-hemisphere structure and comprises a hemisphere I with a sample hole at the top and a hemisphere II with an infrared module mounting hole at the top, the circuit board is mounted in the infrared module mounting hole, and the centers of the infrared module mounting hole and the sample hole are positioned in a same diameter line passing through the sphere center, so that the radiation emitted by the infrared module can irradiate the sample to be detected in the normal direction of the sample.

Description

technical field [0001] The invention relates to an infrared integrating sphere emissivity measurement module, which belongs to the field of infrared testing. Background technique [0002] Emissivity is the basic physical quantity that characterizes the infrared radiation ability of materials, and is the key parameter to characterize the infrared radiation characteristics of materials. Emissivity measurement technology plays an important role in many fields such as radiation temperature measurement, radiation heat transfer, and infrared stealth. Integrating sphere reflection method is the preferred method for measuring the emissivity of materials at room temperature. Infrared light source, integrating sphere and detector are indispensable key components of the integrating sphere measurement module. [0003] Traditional infrared integrating sphere emissivity measurement device, see figure 1 shown. Integrating spheres are mostly designed as three openings of sample hole, inc...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an infrared integrating sphere normal emissivity measurement module in order to solve the problems of poor mechanical chopper structure stability, complex optical path adjustment structure, and inability to measure normal emissivity in traditional infrared integrating sphere measuring devices

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