OPTICAL LAMINATE, POLARIZING PLATE COMPOSITE, AND IMAGE DISPLAY DEVICE

To provide an optical laminate including an adhesive layer having excellent adhesiveness, and capable of suppressing generation of wrinkles in a bent portion even when bent.SOLUTION: The optical laminate includes a first optical layer, a first adhesive layer comprising a cured active energy ray-curable adhesive, and a second optical layer, in the described order. The first optical layer is a liquid crystal layer having a surface on the first adhesive layer side that comprises a liquid crystal compound. The active energy ray-curable adhesive includes a curable component and a cationic polymerization initiator. The curable component includes 10 to 90 pts.mass of a polyfunctional aromatic epoxy compound having a viscosity of 30 Pa s or less at 25°C, with respect to the total amount of the component set to 100 pts.mass, and may include an alicyclic epoxy compound or a monofunctional epoxy compound. The content of the aliphatic epoxy compound is less than 25 pts.mass, and the content of the monofunctional epoxy compound is less than 20 pts.mass. The first adhesive layer has a refractive index of 1.53 or more at a wavelength of 589 nm.SELECTED DRAWING: Figure 1 【課題】優れた接着性を有する接着層を備え、かつ、屈曲された場合であっても屈曲されている部分で生じるシワの発生を抑制し得る光学積層体を提供する。【解決手段】第１光学層と、活性エネルギー線硬化型接着剤を硬化させてなる第１接着層と、第２光学層とをこの順に備え、第１光学層は、第１接着層側の表面が液晶化合物からなる液晶層であり、前記活性エネルギー線硬化型接着剤は、硬化性成分と、カチオン重合開始剤とを含み、前記硬化性成分は、全量を１００質量部とすると、温度２５℃での粘度が３０Ｐａ・ｓ以下である多官能芳香族エポキシ化合物を１０〜９０質量部含み、脂環式エポキシ化合物又は単官能エポキシ化合物を含んでいてもよく、前記脂環式エポキシ化合物の含有量が２５質量部未満であり、前記単官能エポキシ化合物の含有量が２０質量部未満であり、前記第１接着層は、波長５８９ｎｍでの屈折率が１．５３以上である、光学積層体。【選択図】図１