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Credit Card Order Request a Quote Longpass Shortpass Bandpass Filter Links 3rd Millennium Microscopy Astronomy Flow Cytometry Raman Colour Imaging Bandpass Long/Shortpass Rejection band Dichroic Neutral Density Laser Line Analytical Engineering Cleaning Filters 3rd Millennium filters The latest technological advance; 3rd Millennium filters combine a patented, hermetic physical assembly with proprietary ALPHA Technology. A process which produces exceptionally steep cut-on and cut-off slopes. This results in more precise location of cut-on and cut-off points, the ability to place transmission and rejection regions extremely close together, and higher attenuation between the pass band and the rejection band. 3rd Millennium filters are available as; Longpass Filters Shortpass Filters Bandpass Filters Fluorescence Filter sets for more details please click on the appropriate area.   Filter Type Wavelength Range Tolerance Transmission Blocking Range Blocking OD Size Longpass Cut-on       400 - 700nm every 10nm + 3nm > 90% peak UV to Cut-on OD 12 avg OD 6 min 25mm 700 - 800nm every 20nm + 3nm > 90% peak UV to Cut-on OD 12 avg OD 6 min 25mm 800 - 1100nm every 50nm + 3nm > 90% peak UV to Cut-on OD 12 avg OD 6 min 25mm Shortpass Cut-off       400 - 700nm every 10nm + 3nm > 90% peak Cut-off to 1.3x cut-off* OD 12 avg OD 6 min 25mm 700 - 800nm every 20nm + 3nm > 90% peak Cut-off to 1.3x cut-off* OD 12 avg OD 6 min 25mm 800 - 1100nm every 50nm + 3nm > 90% peak Cut-off to 1.3x cut-off* OD 12 avg OD 6 min 25mm Bandpass Cut-on & Cut-off       700 - 800nm every 20nm + 3nm > 80% peak UV to 1.3x cut-off* OD 12 avg OD 6 min 25mm 400 - 700nm every 10nm + 3nm > 80% peak UV to 1.3x cut-off* OD 12 avg OD 6 min 25mm 800 - 1100nm every 50nm + 3nm > 80% peak UV to 1.3x cut-off* OD 12 avg OD 6 min 25mm How To Specify a Filter: Longpass Filter - specify a cut-on wavelength (Example: Part Number - 3RD 650LP) Shortpass Filter - specify a cut-off wavelength (Example: Part Number - 3RD 520SP) Bandpass Filter - specify a cut-on & cur-off wavelength (Example: Part Number - 3RD 580LP - 600SP) Filter Specifications: Assembly Diameter: 25mm Assembly Thickness: 5.5mm Clear Aperture: 21.3mm Substrates: SiO2 substrate with a broadband anti-reflection coating.

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