| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical diffusion laminate capable of enhancing front brightness by the combination of an optical diffusion member and a lens film, reducing patches of the brightness and suppressing poor appearance and angular dependence of emitted light.SOLUTION: The optical diffusion laminate laminated with a first optical diffusion member (A) including one layer consisting of a mixture of two kinds of resin, a lens film (B) having a lens structure formed on one surface and a second optical diffusion member (C) satisfies the following (i) to (iii): (i) a ratio of a total light transmittance to a parallel light transmittance of the internal optical diffusion member (A) is 8 to 110; (ii) a central surface particle size (SGr) of the lens surface of the lens film (B) is 5000 to 30000 μm, and a drop of the degree of emitted light is 3.0 or less at an emission angle of 45 degrees in a deflecting light distribution profile of the emitted light when light is entered at 0 degree; and (iii) a ratio of a total light transmittance to a parallel light transmittance of the second optical diffusion member (C) is 1.0 to 30. |
