Optics > Interference > Thin Films DCS# 6D30.60

INTERFERENCE FILTERS



APPARATUS
 
lfilter wheel
202-21-
document camera
201


DESCRIPTION View filters in reflected and transmitted light.  Interference filters transmit one band of wavelengths, and reflect the rest, with little absorption.  These three filters transmit blue, green, and red, and reflect the complementary color.

The effective thickness of the coatings, and therefore the color, depends on the viewing angle: