Device and method for measuring material diffuse reflectance by adopting gas absorption spectrum
A technology of diffuse reflectance and gas absorption, applied in the direction of color/spectral characteristic measurement, etc., can solve the problem of inaccurate measurement, and achieve the effect of high precision, simple structure, convenient and fast measurement method
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specific Embodiment approach 1
[0018] Specific implementation mode one: the following combination figure 1 Illustrate this embodiment, the device for measuring diffuse reflectance of materials using gas absorption spectroscopy described in this embodiment, it includes a power supply 1, it also includes a laser light source 2, a focusing lens 3, an integrating sphere 4, a photodetector 5, and a data acquisition card 6 and computer 7,
[0019] Integrating sphere 4 has light entrance hole 4-1 and light exit hole 4-2, the center of described light entrance hole 4-1 and integrating sphere 4 centers of spheres and the center of light exit hole 4-2 and integrating sphere 4 centers The angle between the connecting lines is a right angle, the inner wall of the integrating sphere 4 is evenly sprayed with the material to be measured, and the integrating sphere 4 is filled with a gas of known concentration;
[0020] The power supply 1 provides the working power for the laser light source 2. The light beam emitted by t...
specific Embodiment approach 2
[0022] Embodiment 2: This embodiment further describes Embodiment 1. The wavelength of the light beam emitted by the laser light source 2 in this embodiment is in the ultraviolet band, visible light band or near-middle infrared band.
specific Embodiment approach 3
[0023] Embodiment 3: This embodiment further describes Embodiment 1 or 2. The gas with a known concentration in the integrating sphere 4 in this embodiment has a characteristic absorption spectrum.
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