The present invention provides a near infrared absorption filter which
contains, in a resin film produced from either or both a polycarbonate and
a polyarylate by solution casting, a dithiol-nickel complex represented by
the following formula (1):
##STR1##
and at least one kind of diimmonium compound represented by the following
formula (2):
##STR2##
(Wherein R.sub.1 to R.sub.8 may be the same or different and are each a
hydrogen atom, an alkyl group or an aryl group; and X.sup.- is an anion
represented by halogen anion, perchloric acid anion, antimony hexafluoride
anion or nitric acid anion).