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Mounted Longpass Colored Glass Filters
FGL1000M in Front of DET30B2 Ge Photodetector
Thorlabs' Mounted Longpass Colored Glass Filters are manufactured from different colors of Schott® glass and are intended for use in a wide variety of applications. The SM1-mounted (1.035"-40), Ø25 mm filters will thread into our manual or motorized filter wheels or any of our lens tube accessories. The housing is engraved with the Item # and longpass cut-on wavelength for easy identification. If the longpass filter you require is not listed here, it may be available in an unmounted version.
Several of the colored glasses used for our filters are fluorescent at certain wavelengths; for more details on how this may affect certain applications, contact Technical Support. For narrowband sources, we recommend our dielectric edgepass filters.
Colored Glass Filter Kit
The FGK01 Colored Glass Filter Kit contains ten of our most popular Ø25 mm round colored glass filters: three from our bandpass family, and seven from our longpass family. They are premounted in an SM1L03 lens tube that is engraved with the Item # and bandpass region (for bandpass filters) or cut-on wavelength (for longpass filters), and ship in a box with labeled slots to aid organization. To purchase an unlabeled storage box separately, please see below.
If you purchase individual filters and would like to have a safe, convenient place to store them when not in use, consider our KT01 Storage Box. The KT01 is designed to hold up to ten mounted Ø25 mm round filters.