114 BD FACSCanto Flow Cytometer Reference Manual
Figure A-7 Longpass filter
Not all light with shorter wavelengths is absorbed or reflected. Some will still
pass through.
Bandpass Filter
A BP filter transmits a relatively narrow range or band of light. Bandpass filters
are typically designated by two numbers. The first number indicates the center
wavelength and the second refers to the width of the band of light that is passed.
For example, a 500/50 BP filter transmits light that is centered at 500 nm and has
a total bandwidth of 50 nm. Therefore, this filter transmits light efficiently
between 475 and 525 nm.
% transmission
wavelength (nm)
longpass
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