Mounted Bandpass Colored Glass Filters

Mounted Ø25 mm Filters
Bandpass Filters for the UV, Visible, or IR
Selection Available in Kit

FGUV5M

FGB25M

FGB37M

FGB67M

Mounted in TRF90
Lockable Flip Mount

Related Items

Unmounted Bandpass Colored Glass

Dielectric Bandpass Filters

Filter Mounts

Liquid Crystal Tunable Filters

Fluorescent Calibration Slides

Dielectric Edgepass Filters

Mounted Longpass Colored Glass

SM1 Compatible Components

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General Specifications
Material	Schott^® Colored Glass
Diameter	25 mm
Clear Aperture	80% of Diameter
Thickness	2 mm
Thickness Tolerance	+0.0 mm/-0.4 mm
Surface Quality	40-20 Scratch-Dig
Surface Flatness	<λ @ 633 nm
Wedge	<3 arcmin

Features

Bandpass Regions Between 240 and 1375 nm
Ø25 mm Filters
SM1-Threaded Mount, Engraved with Item # and Description
Broadband Counterpart to Thin Film Dielectric Filters
Kit Includes Selected Bandpass and Longpass Filters

Thorlabs' Mounted Bandpass 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 intended wavelength range for easy identification. If the bandpass 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 bandpass filters.

Colored Glass Filter Kit
Thorlabs offers a boxed filter kit containing a selection of our most popular bandpass and longpass filters. For the specific filters included in the kit, please see the presentation at the bottom of this webpage.

Storage Box
If you need a safe, convenient place to store loose filters, consider our KT01 Storage Box, a lockable foam case that holds up to ten filters. Please see below for more information.

Colored Glass Selection Guide
Bandpass			Longpass		Color-Temperature-Balancing
Mounted	Unmounted	AR Coated	Mounted	Unmounted	Mounted and Unmounted

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Ø25 mm Mounted Bandpass Filters

Compatible with Filter Mounts or Lens Tubes
Fabricated from 2 mm Thick Schott^® Colored Glass

Item # (Click for Photo)	Bandpass Region	Schott^® Glass #
FGUVM	325 - 385 nm	UG1
FGB37M	335 - 610 nm	BG40
FGB67M	900 - 1375 nm	BG36

Click on for a plot and downloadable data.

Item # (Click for Photo)	Bandpass Region	Schott^® Glass #
FGUV5M	240 - 395 nm	UG5
FGUV11M	275 - 375 nm	UG11
FGB25M	315 - 445 nm 715 - 1095 nm	BG3
FGS900M	315 - 710 nm	KG3

Colored Filter Kit

Zoom

FGK01 Contents	Bandpass Region or Cut-On Wavelength
FGS900M	315 - 710 nm
FGB37M	335 - 610 nm
FGUVM	325 - 385 nm
FGL400M	400 nm
FGL495M	495 nm
FGL550M	550 nm
FGL610M	610 nm
FGL715M	715 nm
FGL780M	780 nm
FGL850M	850 nm

Click to Enlarge

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.

Filter Storage Box