Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1991-10-29
1993-08-24
Sluby, P. C.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
428412, 428419, 428447, 428461, 428516, 428521, 428522, 428913, 427 10, 427162, 427164, 359359, 359589, B32B 2736, B05D 506, G02B 522
Patent
active
052387380
ABSTRACT:
A polymeric minus filter for an incident electromagnetic spectral band comprises at least one polymeric interference stack tuned to a predetermined design wavelength centered around .lambda..sub.0, wherein .lambda..sub.0 is in the range of 300 nm to 2000 nm, said filter comprises an optically transparent substrate and having deposited thereon at ambient temperatures (20.degree. to 23.degree. C.) a multiplicity of pairs of polymeric thin interference layers plus one final polymeric layer having index of refraction n.sub.2, each pair of interference layers having a total optical thickness equal to 1/2 wavelength of .lambda..sub.0, the members of each pair having refractive indices n.sub.1 and n.sub.2, respectively, wherein the layer having refractive index n.sub.2 is directly superimposed upon said substrate having refractive index n.sub.s and wherein n.sub.s is approximately equal to n.sub.1, and wherein n.sub.2 <n.sub.1.
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patent: 4915476 (1990-04-01), Hall et al.
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Herman V. Boeing, "Fundamentals of Plasma Chemistry and Technology," Technomic Publishing Co., Inc., Lancaster, Pa., 327-332 (1988).
J. J. Beulens et al., Journal of Applied Polymer Science: Applied Polymer Symposium 46 91-108, 209-242, 527-540 (1990).
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Sherman Lorraine R.
Sluby P. C.
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