Operation Manual

Green Glass – Longpass absorption glass from Schott Glassworks with cut-on wavelengths in the violet

and blue-green regions

A designation for high-performance filters with narrow cuton and cutoff wavelengths

Longpass Filters

Longpass filters transmit a wide spectral band of long wavelength radiation while blocking short

wavelength radiation. (See Figure Below)

Narrowband Filters

Narrowband filters with a very narrow band, typically 1 to 3nm wide. They can be used successfully

only with high intensity light sources because of the narrow bandwidth.

Neutral density filters are designed to reduce transmission evenly across a portion of the spectrum.

Orange Glass - Longpass absorption glass from Schott Glassworks with cut-on wavelengths in the

green, yellow and orange regions

Polychromatic mirrors or beam splitters.

These beam splitters reflect and transmit more than two bands of light. Dual-band or Triple-band filter

sets include three carefully balanced combinations that contain dual or triple bandpass excitation and

emission filters, these dedicated filter sets also incorporate polychromatic mirrors or beam splitters with

multiple bandpass characteristics, having transmission and reflection regions that are matching to the

specific excitation and emission filters employed.

Red Glass - Longpass absorption glass from Schott Glassworks with cut-on wavelengths in the red and

far red regions