Method for measuring thickness of rigid transparent material with laser
A technology of laser thickness measurement and transparent materials, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve problems affecting production efficiency and achieve the effect of improving quality and production efficiency
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[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0022] like figure 1 As shown, after the position of the laser light source 1 is fixed, the incident angle of the laser beam is a fixed value, the material refraction angle It varies according to the difference of material composition, but the same material to a certain value. Let the refractive index of the tested material 6 be K, the material thickness be T, and the horizontal distance between the two parallel rays of light reflected and refracted by the upper and lower surfaces of the material is A. For the convenience of calculation, the laser incident angle is adjusted as . Then the calculation method of material thickness T is as follows:
[0023] ;
[0024] ;
[0025] (1)
[0026] in:
[0027]
[0028] It can be seen from equation (1) that the material thickness T is proportional to the horizontal spacing A ...
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