MULTILAYER FILM

Abstract: a laminated film is disclosed including an optical functional layer having a function of changing a direction of light and a pressure-sensitive adhesive layer for protecting the optical functional layer. a laminated film according to at least one embodiment includes: an optical functional layer having a first main surface and a second main surface, the first main surface having an uneven structure and having a height of unevenness of from 10 nm to 100 �m; a porous layer arranged on the first main surface of the optical functional layer; and a pressure-sensitive adhesive layer arranged on the porous layer on a side opposite to the optical functional layer, wherein the optical functional layer comprises a reflection-type hologram film, a microlens array film, or a prism film, and wherein the porous layer has a refractive index of from 1.15 to 1.30.

Inventor(s): Ryota Morishima, Daisuke Hattori

CPC Classification: G02B5/32 (Holograms used as optical elements)

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