LAMINATE, OPTICAL SUBSTRATE COMPRISING THE LAMINATE, AND OPTICAL ARTICLE INCLUDING THE OPTICAL SUBSTRATE

To provide an optical article having high adhesiveness and excellent impact resistance in an optical article including a laminate prepared by bonding optical sheets to each other with an adhesive layer.SOLUTION: A laminate is provided, having a laminate structure including a first optical sheet and...

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Bibliographische Detailangaben
Hauptverfasser: MORI RIKIHIRO, HIRAREN TOSHIMITSU
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide an optical article having high adhesiveness and excellent impact resistance in an optical article including a laminate prepared by bonding optical sheets to each other with an adhesive layer.SOLUTION: A laminate is provided, having a laminate structure including a first optical sheet and a second optical sheet directly or indirectly joined with an adhesive layer, and the laminate satisfies at least one of the following characteristics (1) and (2). (1) The thickness of the first optical sheet is 1.10 times or more and 5.00 times or less of the thickness of the second optical sheet. (2) The stretching ratio of the first optical sheet is 1.10 times or more and 5.00 times or less of the stretching ratio of the second optical sheet.SELECTED DRAWING: None 【課題】光学シート同士を、接着層を介して接合した積層体を備えた光学物品において、高い密着性を有し、かつ耐衝撃性に優れる光学物品を提供する。【解決手段】 第一光学シート、及び第二光学シートが接着層を介して直接的、又は間接的に接合された積層構造を有する積層体であって、下記の(1)、及び(2)の少なくとも一方の特性を満足する積層体。(1)前記第一光学シートの厚みが、前記第二光学シートの厚みの1.10倍以上5.00倍以下である。(2)前記第一光学シートの延伸倍率が、前記第二光学シートの延伸倍率の1.10倍以上5.00倍以下である。【選択図】 なし