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Academic Journal of Engineering and Technology Science, 2023, 6(3); doi: 10.25236/AJETS.2023.060310.

Fast measurement of the lattice constant of smartphones with a laser pen


Xu Wang

Corresponding Author:
Xu Wang

School of Electronic Information Engineering, Shandong University of Science and Technology, Qingdao, 266590, China


Grating is one of the widely used optical elements in modern optics, and the grating constant determines many properties of the grating. The smart phone screen is a regular grating. Based on the grating formula, this paper improves and simplifies the experimental device, and measures the grating constant of the smart phone through the diffraction pattern reflected by the smart phone screen on the normal and grazing incidence of the laser pen. By comparing with the theoretical value, it is found that the measured value is in good agreement with the real value.


grating diffraction; intelligent mobile phone

Cite This Paper

Xu Wang. Fast measurement of the lattice constant of smartphones with a laser pen. Academic Journal of Engineering and Technology Science (2023) Vol. 6, Issue 3: 57-63. https://doi.org/10.25236/AJETS.2023.060310.


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