Compositions – Light transmission modifying compositions
Patent
1998-01-23
2000-07-11
Tucker, Philip
Compositions
Light transmission modifying compositions
252587, 385122, 385143, 359328, 359329, 549 59, 558 54, F21V 900, G02B 600, G02F 135
Patent
active
060867949
ABSTRACT:
An organic nonlinear optical material comprising a compound having the iodonium salt structure represented by the general formula (I): ##STR1## wherein .pi..sub.1 to .pi..sub.n are the same or different and each is an atomic group having .pi. electron, I.sub.1 to I.sub.n-1 are an iodonium cation, A.sub.1 to A.sub.n-1 are the same or different and each is a counter anion for the iodonium cation, R.sup.1 and R.sup.2 are the same or different and each is a hydrogen atom or an electron donative group, and n is an integer of 2 to 4. The material has large nonlinear optical constants and shows no light absorption in the visible light region.
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Kurata Tetsuyuki
Nobutoki Hideharu
Mitsubishi Denki & Kabushiki Kaisha
Tucker Philip
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