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The basic principle of measuring spectral reflectance

The ratio of the radiant flux to the radiation flux reflected from the object. General objects will have a diffuse reflection, if you want to get the reflected light you need to integrate the ball. Figure 1.29 is an example of the measurement of the diffuse reflection device.

If the spectral reflectance of the standard diffusion reflection plate is known, the spectral (diffuse) reflectance of the sample is obtained by comparing the measurements. Assuming that the monochromatic light of standard diffuse reflection plate, a light receiver for John (R, Meng), monochromatic light sample output from the light receiving device for the spectral reflectance of eight (diffusion) can be obtained with the scanning spectral transmittance spectra intensity meter wavelength under the same amount of side.

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