This is laser dotted light guide panel (LGP). The light guiding pattern is precisely devised by optics software, and laser engraved on the substrate of Mitsubishi acrylic, which is highly applicable for LED panel light, edge lighting ceiling light and other edge lit lighting fixtures.
It makes the light coming from the light source evenly over the whole upper face of the acrylic sheet. It can help to reduce 70% on electricity consumption and offers 10X longer lifespan than traditional LED, Neon and Halogen products.