©1990-2002 J.Paul Robinson, Purdue University
BMS 631 – LECTURE006.PPT
Absorptive filters
•
Such as
coloured glass
filters which absorb
unwanted light.
•
Consist of
dye molecules
uniformly
suspended in glass or plastic.
•
Remove much more of the unwanted light
than do the interference filters
•
Will often fluoresce (not good!)