IN IN3091DELNP2015A
[0001] In the present invention, an optical substrate manufacturing method has the following: a step (S0) for preparing a long film- shaped mold having an uneven pattern surface; a step (S2) for forming on the uneven pattern surface of the film shaped mold , a coating of a sol gel material; a step (S3) for causing the uneven pattern surface of the film -shaped mold on which the sol gel material coating film was formed to face a substrate, pressing a pressing- force roll against a surface opposite the uneven pattern surface of the film- shaped mold thereby bringing the coating film formed on the uneven pattern surface into close contact with the substrate; a step (S4) for removing the film -shaped mold from the coating film; and a step (S5) for curing the coating film that is in close contact with the substrate. The present invention enables high throughput manufacturing of an optical substrate that can be used for diffraction and scattering of light , and that has heat resistance and weather resistance.
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