Solar blind optical filter

Details Solar blind optical filter Solar blind optical filter

1999-07-15

2000-10-03

Tucker, Philip

Compositions

Light transmission modifying compositions

Ultraviolet

252588, 359885, 359886, 359361, F21V 904, G02B 522

Patent

active

061268690

ABSTRACT:
A solar blind optical filter which absorbs solar UV radiation and transmits non-solar UV radiation includes a carrier material and a salt of a dithioic acid of the formula RCS.sub.2.sup.- X.sup.+ wherein R is an a organic substituent that does not absorb ultraviolet light at wavelengths between 260 nanometers and 300 nanometers and X is a counterion. The solar blind optical filters of the present invention are useful for observing non-solar ultraviolet radiation in the presence of solar radiation.

REFERENCES:
patent: 4317751 (1982-03-01), Kraushaar
patent: 4521301 (1985-06-01), Detienne et al.
patent: 4597629 (1986-07-01), Kraushaar
patent: 4731881 (1988-03-01), Geller
patent: 4793668 (1988-12-01), Longstaff
patent: 4795461 (1989-01-01), Lindqvist et al.
patent: 4885114 (1989-12-01), Gordon et al.
patent: 5021668 (1991-06-01), Talmore et al.
patent: 5066082 (1991-11-01), Longstaff
patent: 5574286 (1996-11-01), Huston et al.

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