Patent ID: 6596375
Filing Date: 2003-07-22
Classification: G02B,G03B,Y10T

Abstract:
An optical sheet comprising a transparent substrate and a binder layer laminated directly or through another layer on the transparent substrate, wherein spherical fine particles having a diameter of 1 to 50 &mgr;m and a particle diameter distribution of 0.8 to 1.0 are embedded in a state of a monoparticle layer in the binder layer so as to partly project from the surface of the binder layer, and a distance from the top of the projected fine particles to the surface of the transparent substrate is from 100% to 110% of the volume average particle diameter of the spherical fine particles wherein the glass transition temperature of the resin used in the binder layer is from âˆ’65Â° C. to âˆ’15Â° C.