Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1995-10-27
1997-03-04
Thomas, Alexander
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428 1, 359 49, 359 69, G02F 113
Patent
active
056077645
ABSTRACT:
An improved optical diffuser comprising a transparent support and an optical diffusing layer which is coated on one surface of the support and comprises an organic polymer binder and organic polymer particles is obtained by selecting the constituents to satisfy the conditions that a difference of refractive index between the binder and particles is not more than 0.05; the polymer particles have a mean particle size of 10 to 21 .mu.m; a weight ratio of the particles to the binder in the diffusing layer is within 1.9 to 2.6; a total weight of the coated polymer binder and particles per unit surface is within 10 to 17 g/m.sup.2 ; and a distribution of the sizes of the polymer particles is not more than 3.5 .mu.m in terms of standard deviation.
Konno Takeshi
Ochiai Takeji
Fuji Photo Film Co. , Ltd.
Thomas Alexander
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