Importance

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Abstract

A light-uniformizing film, comprising a light-splitting layer (21), a substrate layer (20) and a light-diffusion layer (22), or only comprising the light-splitting layer (21) and the substrate layer (20), wherein the light-diffusion layer (22) is located on the upper surface of the substrate layer (20), the light-splitting layer (21) is located on the lower surface of the substrate layer (20), and the light-splitting layer (21) has a good surface finish, such that the abnormal deflection of light is small. By means of the light-uniformizing film, the energy concentrated within a certain range around a beam center of a point light source can be rationally distributed in other directions, the energy of a central hotspot on a projection screen is reduced, and the overall light-emission area is enlarged, thereby improving the uniformity of energy distribution.

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First Claim