公开(公告)号：US10591644B2

公开(公告)日：2020-03-17

申请号：US16058891

申请日：2018-08-08

Applicant: TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.

Inventor： Naoki Serizawa ,  Takayuki Nakanishi

IPC: G02B1/111 ,  G02B1/16 ,  G02B1/18 ,  B32B3/30 ,  G02B5/30 ,  B32B27/20 ,  G02F1/1335 ,  B32B7/02 ,  G02B5/02 ,  G09F9/00

Abstract: An optical laminate includes a translucent substrate, and at least one optical functional layer provided on the translucent substrate. The optical functional layer has a concave-convex shape on at least one surface. The optical functional layer contains two types of inorganic fine particles, and resin particles. The optical laminate has an internal haze X and a total haze Y satisfying (1) Y>X, (2) Y≤X+25, (3) Y≤50, and (4) 7≤X≤25. The optical laminate has a transmitted image clarity of 15% to 55% as measured using a 0.5-mm width optical comb. The number of projections having a height of not smaller than 0.1 μm is not less than 900 per mm2 of measurement area in the concave-convex shape as measured by optical interferometry at an outermost surface of the optical functional layer.

公开(公告)号：US10539720B2

公开(公告)日：2020-01-21

申请号：US16053502

申请日：2018-08-02

Applicant: TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.

Inventor： Naoki Serizawa ,  Takayuki Nakanishi

IPC: G02B5/02 ,  B32B27/20 ,  B32B3/30 ,  G02B5/30 ,  G02B1/111 ,  B32B7/02 ,  G02B1/16 ,  G02B1/18 ,  B32B27/06 ,  B32B27/30 ,  G02F1/1335

Abstract: An optical laminate includes a translucent substrate, and at least one optical functional layer provided on of the translucent substrate. The optical functional layer has a concave-convex shape on at least one surface. The optical functional layer contains two types of inorganic fine particles, and resin particles. The optical laminate has an internal haze X and a total haze Y satisfying (1) Y>X, (2) Y≤X+17, (3) Y≤57, and (4) 19≤X≤40. The optical laminate has a transmitted image clarity of 30% to 70% as measured using a 0.5-mm width optical comb. The number of projections having a height of not smaller than 0.1 μm is not less than 600 per mm2 of measurement area in the concave-convex shape as measured by optical interferometry at an outermost surface of the optical functional layer.