▎ 摘　　要

NOVELTY - This utility model relates to a multilayer graphene stain detecting device, comprising the machine frame and is set with the scanning mechanism on machine frame of the controller, operating mechanism, a photographing mechanism, image processor, seal cover, air blow, vacuum pumping apparatus and the theory of using laser is a refractive index for the stain of graphene by detecting, with high accuracy, the polymerizable better use of laser for scanning one by one with stronger precision and anti-wrong character, laser sensor collecting laser signal, has control unit analysis, the light-tight characteristics can convenient testing, to prevent interference with but influence test result of other light; it can air blow to the closeness space for cleaning the dust in the air to fall off of the graphite alkene of detection, high accuracy and affect detection.