The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2020
Filed:
Aug. 08, 2018
Toppan Tomoegawa Optical Films Co., Ltd., Taito-ku, Tokyo, JP;
Naoki Serizawa, Tokyo, JP;
Takayuki Nakanishi, Tokyo, JP;
TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD., Tokyo, JP;
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 mmof measurement area in the concave-convex shape as measured by optical interferometry at an outermost surface of the optical functional layer.