| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical sheet capable of effectively preventing occurrence of glare.SOLUTION: An optical sheet 60 includes a base material layer 65, a mat layer 70, and a prism layer 80. The mat layer contains first light-diffusing particles 71, second light-diffusing particles 72, and a binder resin 73. Each of the second light-diffusing particles has a refractive index nthat is different from a refractive index nof the binder resin and a refractive index nof each of the first light diffusion particles. An average particle diameter dof the first light diffusion particles, an average particle diameter dof the second light diffusion particles, and a thickness tof the mat layer at a position having neither first light diffusion particles nor second light diffusion particles satisfy a relationship of d<t<d. |
