Fluorescence Filters

Fluorescence Filters

Iridian offers excitation, dichroic, and emission fluorescence spectroscopy filters for confocal microscopy, flow cytometry, and other biomedical applications. These dichroic (FLD) and emission (FLE) filters deliver more signals with less background noise, and are compatible with common excitation sources and fluorophores. They also feature high transmission and reflection levels, low ripple, steep edges, and deep blocking outside of the pass band.

The Iridian FLD and FLE filters are capable of optimizing the discrimination of light emitted from different fluorophores in the optical path of multi-color flow cytometers. These filters eliminate background excitation and the overlap of emission signals from different fluorophores while maintaining high channel signal, leading to improved data capture and analysis.

Dichroic fluorescence filters:

  • >90% transmission (average)
  • >90% reflection over reflection range
  • AOI: 45 +/- 1.5 degrees; cone ½ angle 2 degrees
  • Size: 25.2 x 35.6 x 10.5mm
  • Clear Aperture: >80% elliptical
  • Laser marked for individual identification
  • Scratch/dig: 60/40

Excitation and emission fluorescence filters:

  • >90% transmission (average)
  • >OD5 average blocking over range
  • AOI: 0-5 degrees; cone ½ angle 7 degrees
  • Size: 25mm diameter; ring mounted laser engraved
  • Ring thickness:  FEX(excitation) 5mm, FEM (emission) 3.5mm
  • Clear aperture: >21mm
  • Scratch/dig: 80/50

For additional information on Iridan Spectral Technologies’ fluorescence filters’ specifications and pricing, download the datasheets.

Iridian Spectral Technologies