3rd Millennium Bandpass Optical Filters

3rd Millennium Bandpass Filters

The 3rd Millennium Bandpass 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 the 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 also available as;

Longpass Filters
Shortpass Filters
Fluorescence Filter sets

for more details please click on the appropriate area.

3rd Millennium Bandpass Filters are available in the following configurations:

Filter Type

Wavelength
Range

Tolerance

Transmission

Blocking Range

Blocking OD

Size

Bandpass

Cut-on & Cut-off

400 - 790nm
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:

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.