Optical film and manufacturing method therefor, antiglare...

Details Optical film and manufacturing method therefor, antiglare... Optical film and manufacturing method therefor, antiglare...

2011-08-16

2011-08-16

Consilvio, Mark (Department: 2872)

Optical: systems and elements

Glare or unwanted light reduction

C428S143000

Reexamination Certificate

active

07997743

ABSTRACT:
An optical film is provided and includes a base member and an optical layer on the base member. The optical layer has a surface asperity formed by applying a coating material containing microparticles and resin on the base member, distributing the microparticles densely in some parts and sparsely in other parts by convections that occur in the coating material, and curing the coating material. The average diameter of the microparticles is 2.4 μm or more and 8 μm or less. The average thickness of the optical layer is 6.4 μm or more and 18 μm or less. The arithmetic mean roughness Ra of a roughness profile of the optical layer surface is 0.03 μm or more and 0.15 μm or less and the root-mean-square slope RΔq is 0.01 or more and 0.03 or less. The difference in refractive index between the resin and the microparticles is 0 or more and 0.015 or less.

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