OPTICAL LAMINATE

PROBLEM TO BE SOLVED: To provide an optical laminate that can effectively reduce transition of a dichroic dye contained in a polarizing film to a conductive layer to prevent deterioration of the conductive layer.SOLUTION: An optical laminate has a first cured material layer that is formed of a cured material of a curable composition containing a polymerizable compound, an adhesive layer, and a conductive layer laminated in this order on one face of a polarizing film that contains a dichroic dye in a polyvinyl alcohol resin, where the first cured material layer has a rate of increase in absorbance represented by the following formula (1) of 30% or less. (1) the rate of increase in absorbance (%)=(after immersion Abs(360nm)-before immersion Abs(360nm))/before immersion Abs(360nm)×100.SELECTED DRAWING: None 【課題】偏光フィルムに含まれる二色性色素の導電層への移行を有効に抑制し、導電層の劣化を防止できる光学積層体を提供する。【解決手段】ポリビニルアルコール系樹脂中に二色性色素を含有する偏光フィルムの一方の面に、重合性化合物を含む硬化性組成物の硬化物から構成される第１硬化物層と、粘着層と、導電層とがこの順に積層された光学積層体であって、前記第１硬化物層は、下記式（１）で表される吸光度上昇率が３０％以下である、光学積層体。吸光度上昇率（％）＝（浸漬後Abs（360nm）−浸漬前Abs（360nm））／浸漬前Abs（360nm）×１００ （１）【選択図】なし