Patent ID: 6940644

Claim:
A lens sheet for diffusing light that enters the lens sheet from a rear side and allowing the diffused light to emerge from the lens sheet toward a viewing side, comprising: a sheet-shaped substrate part; a lens part formed on a light-incident-side surface of the sheet-shaped substrate part; and an extraneous-light absorbing part formed on a portion of the light-emergent-side surface of the sheet-shaped substrate part through which light converged by the lens part does not pass; wherein (1) the extraneous-light absorbing part includes a base material, and a plurality of light-diffusing particles subjected to coloring treatment, incorporated in the base material, and (2) light-diffusing particles are made by dispersing a coloring agent in a base material for the light-diffusing particles; and a content of the coloring agent in each light-diffusing particle is from 1.5 to 55% by weight.