LIGHT-DIFFUSING ELEMENT AND METHOD FOR MANUFACTURING LIGHT-DIFFUSING ELEMENT

摘要

To provide a strongly diffusing, high-haze light-diffusing element whereby backscatter is minimized and transmission of ballistic light is reduced. This light-diffusing element has the following: a matrix that contains a resin component and an ultrafine-particle component; and light-diffusing fine particles dispersed within said matrix. Outside each light-diffusing fine particle, in the vicinity of the surface thereof, an essentially spherical-shell-shaped modulated-concentration region in which the weight concentration of the ultrafine-particle component increases with increasing distance from that light-diffusing fine particle is formed. The mean separation (A) between the centers of the light-diffusing fine particles in this light-diffusing element and the mean diameter (B) of said light-diffusing fine particles satisfy the relation 0.90 < B/A.