Dexerials Corporation

Tsuguto Suzuki

Yuko Kibushi

Zhen Huang

Tomoaki Kobayashi

Takahisa Watanabe

Katsutoshi Suzuki

This production method for an optical laminate is a production method for an optical laminate having a plastic film, an adhesion layer, an optical function layer and an antifouling layer laminated in order and includes an adhesion layer formation step of forming an adhesion layer, an optical function layer formation step of forming an optical function layer, a surface treatment step of treating a surface of the optical function layer so that a change rate of surface roughness represented by the prescribed formula (1) is 5% to 35% or a change rate of an average length of elements represented by the prescribed formula (2) is 7% to 70%, and an antifouling layer formation step of forming an antifouling layer on the optical function layer having a treated surface.

Production method for optical laminate

This optical laminate includes a transparent substrate, an optical functional layer, and an antifouling layer laminated in this order, wherein the optical functional layer is a laminate in which a low refractive index layer and a high refractive index layer are alternately laminated, the antifouling layer is formed of a vapor-deposited film obtained by vapor deposition of an antifouling material, and the residual amount of fluorine atoms in the antifouling layer detected by XRF after 10 minutes of cleaning by irradiation with 40 KHz and 240 W ultrasonic waves in a fluorine-based solvent is 70% or more.

Optical laminate, article and method of manufacturing optical laminate

This method of manufacturing an optical laminate comprising a transparent substrate, an adhesion layer, an optical functional layer, and an antifouling layer laminated in this order, includes an adhesion layer forming step of forming the adhesion layer, an optical functional layer forming step of forming the optical functional layer, a surface treatment step of treating the surface of the optical functional layer so that the rate of change in surface roughness represented by formula (1) is 1˜25%, and an antifouling layer forming step of forming the antifouling layer on the surface-treated optical functional layer; Rate of change of surface roughness (%)=((Ra2/Ra1)−1)×100(%) Formula (1) (Formula (1), where Ra1 represents the surface roughness (Ra) of the optical functional layer before the surface thereof is treated, and Ra2 represents the surface roughness (Ra) of the optical functional layer after the surface thereof is treated.).

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Shimotsuke, Japan

Tsuguto Suzuki