| 摘要 |
The object of the invention is to provide an adhesive composition attaining, in a single layer, both adhesiveness capable of direct attachment to a glass plate disposed on the front face of a display device and desired optical filter functions and hardly undergoing the change in spectral characteristics attributable to deterioration in a light absorbing agent, even during long-time use, particularly at high temperature under high humidity, as well as an optical filter using this adhesive composition. The object is solved by an optical filter comprising an adhesive layer having optical filter functions, comprising a block copolymer (I) having at least a specific triblock structure in its molecule and having a weight average molecular weight of 50,000 or more and a molecular weight distribution (Mw/Mn) of less than 1.5, a resin (IV) having the glass transition temperature of 60° C. or more and one or more light absorbing agents (III) each having light absorption in a predetermined wavelength region.
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