Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1992-08-04
1993-07-27
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 79, 428 1, 427284, G02F 1133, C09K 1900, B05D 500
Patent
active
052315240
ABSTRACT:
A top coat comprising an acrylic resin is provided on a substrate by means of printing techniques. Various compositions of the starting material (difunctional, trifunctional and tetrafunctional acrylates and possible additives) are described. The resultant top coat is hard and has slanting portions at its edges.
REFERENCES:
patent: 4422727 (1983-12-01), Baeger et al.
patent: 4779957 (1988-10-01), Suginoya et al.
patent: 5118372 (1992-06-01), Spahn
patent: 5157527 (1992-10-01), De Keyzer et al.
Baltussen Petrus E. M.
De Keyzer Gerardus C. M.
Luijben Henricus G. J. A. M.
Raaijmakers Antonius H. M.
Mai Huy K.
Sikes William L.
Spain Norman N.
U.S. Philips Corporation
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