Unmounted Bandpass Colored Glass Filters
- Ø25 mm Rounds, 2" x 2" Squares, or 6" x 6" Squares
- Economic Alternative to Thin-Film Interference Filters
- Selection Available in Kits
FGB37S
(2" x 2")
FGUV5
FGB25
FGK01
OVERVIEW
| General Specifications | |||
|---|---|---|---|
| Size | Ø25 mm | 2" x 2" | 6" x 6" |
| Thickness | 2 mm | 3 mm | |
| Surface Quality | 40-20 Scratch-Dig | ||
| Surface Flatness | <λ @ 632.8 nm | <λ @ 632.8 nm over 1" | |
| Tolerance | +0.0/-0.4 mm (Diameter) |
+0.0/-0.4 mm (Length and Width of Square Filter) |
|
| Wedge | <3 arcmin | <5 arcmin | |
| Clear Aperture | 80% of Diameter | 80% of Length and Width | |
| Material | Schott® Colored Glass | ||
Features
- Bandpass Regions Between 240 and 1375 nm
- Ø25 mm Round, 2" x 2" Square, or 6" x 6" Square Sizes
- Kits Include Selection of Bandpass and Longpass Filters
These bandpass colored glass filters are manufactured from different colors of Schott® glass and are intended for use in a wide variety of applications. The filters are available in both round and square varieties. The Ø25 mm round filters will fit into our manual or motorized filter wheels; alternatively, they can be mounted in a lens tube. A selection of Ø25 mm filters is available premounted. To mount the 2" x 2" square filters, choose from our selection of fixed filter holders. For the 6" x 6" filters, we recommend the FP02 Plate Holder. In addition to the bandpass filters offered here, Thorlabs offers a series of longpass colored glass filters. If transmission ratios greater than those provided by the filters listed here are required, we provide a selection of bandpass colored glass filters with antireflective coatings.
Several of the colored glasses used for our filters are fluorescent at certain wavelengths; please consider our fluorescence imaging filters if your application is sensitive to fluorescent signals. For narrowband sources, we recommend our dielectric bandpass filters.
Colored Glass Filter Kits
Thorlabs also offers two filter kits containing our most popular bandpass and longpass filters. For specific product details, please see the bottom of the page.
Storage Boxes
If you purchase individual filters and would like to have a safe, convenient way to store them when not in use, consider our storage boxes. There is one box (KT01) designed for mounted Ø25 mm filters and a second (KT03) for the unmounted 2" x 2" filters.
Ø25 mm Unmounted Bandpass Filters
- Mountable with Filter Mounts or Lens Tubes
- Fabricated from 2 mm Thick Schott® Colored Glass
- Also Available in an SM1-Threaded Mount
Part Number | Description | Price | Availability |
|---|---|---|---|
FGUV5 | Ø25 mm UG5 Colored Glass Bandpass Filter, 240 - 395 nm | $88.89 | Today |
FGUV11 | Ø25 mm UG11 Colored Glass Bandpass Filter, 275 - 375 nm | $88.89 | Today |
FGS550 | Customer Inspired! Ø25 mm KG2 Colored Glass Bandpass Filter, 304 - 785 nm | $32.13 | Today |
FGB25 | Ø25 mm BG3 Colored Glass Bandpass Filter, 315 - 445 nm and 715 - 1095 nm | $40.70 | Today |
FGS900 | Ø25 mm KG3 Colored Glass Bandpass Filter, 315 - 710 nm | $44.98 | Today |
FGS580 | Customer Inspired! Ø25 mm KG1 Colored Glass Bandpass Filter, 315 - 725 nm | $32.13 | Today |
FGUV | Ø25 mm UG1 Colored Glass Bandpass Filter, 325 - 385 nm | $40.70 | Today |
FGS600 | Customer Inspired! Ø25 mm HA5 Colored Glass Bandpass Filter, 330 - 665 nm | $32.13 | Today |
FGB37 | Ø25 mm BG40 Colored Glass Bandpass Filter, 335 - 610 nm | $61.05 | Today |
FGB39 | Customer Inspired! Ø25 mm BG39 Colored Glass Bandpass Filter, 360 - 580 nm | $32.13 | Today |
FGB18 | Customer Inspired! Ø25 mm BG18 Colored Glass Bandpass Filter, 412 - 569 nm | $32.13 | Today |
FGB7 | Customer Inspired! Ø25 mm BG7 Colored Glass Bandpass Filter, 435 - 500 nm | $32.13 | Today |
FGV9 | Customer Inspired! Ø25 mm VG9 Colored Glass Bandpass Filter, 485 - 565 nm | $44.98 | Today |
FGB67 | Ø25 mm BG36 Colored Glass Bandpass Filter, 900 - 1375 nm | $44.98 | Today |
2" Square Unmounted Bandpass Filters
- Mountable with our Wide Selection of Filter Holders
- Fabricated from 2 mm Thick Schott® Colored Glass
Part Number | Description | Price | Availability |
|---|---|---|---|
FGUV5S | 2" Square UG5 Colored Glass Bandpass Filter, 240 - 395 nm | $193.85 | Today |
FGUV11S | 2" Square UG11 Colored Glass Bandpass Filter, 275 - 375 nm | $193.85 | Today |
FGS550S | Customer Inspired! 2" Square KG2 Colored Glass Bandpass Filter, 304 - 785 nm | $87.82 | Today |
FGB25S | 2" Square BG3 Colored Glass Bandpass Filter, 315 - 445 nm and 715 - 1095 nm | $81.40 | Today |
FGS900S | 2" Square KG3 Colored Glass Bandpass Filter, 315 - 710 nm | $87.82 | Today |
FGS580S | Customer Inspired! 2" Square KG1 Colored Glass Bandpass Filter, 315 - 725 nm | $87.82 | Today |
FGUVS | 2" Square UG1 Colored Glass Bandpass Filter, 325 - 385 nm | $79.25 | Today |
FGS600S | Customer Inspired! 2" Square KG5 Colored Glass Bandpass Filter, 330 - 665 nm | $87.82 | Today |
FGB37S | 2" Square BG40 Colored Glass Bandpass Filter, 335 - 610 nm | $87.82 | Today |
FGB39S | Customer Inspired! 2" Square BG39 Colored Glass Bandpass Filter, 360 - 580 nm | $87.82 | Today |
FGB18S | Customer Inspired! 2" Square BG18 Colored Glass Bandpass Filter, 412 - 569 nm | $87.82 | Today |
FGB7S | Customer Inspired! 2" Square BG7 Colored Glass Bandpass Filter, 435 - 500 nm | $87.82 | Today |
FGV9S | Customer Inspired! 2" Square VG9 Colored Glass Bandpass Filter, 485 - 565 nm | $87.82 | Today |
FGB67S | 2" Square BG36 Colored Glass Bandpass Filter, 900 - 1375 nm | $88.89 | Today |
6" Square Unmounted Bandpass Filters
| Item # (Click for Photo) |
Transmission Dataa |
Bandpass Region | Schott® Glass # |
|---|---|---|---|
| FGS900H |  |
315 - 710 nm | KG3 |
| FGB37H | |
335 - 610 nm | BG40 |
- Click on for a plot and downloadable data.
- 6" Square Filters Offer Large Surface Area for Large Beams
- Mountable to Breadboards and Ø1/2" Posts with the FP02 Plate Holder
- Fabricated from 3 mm Thick Schott® Glass
Part Number | Description | Price | Availability |
|---|---|---|---|
FGS900H | 6" Square KG3 Colored Glass Bandpass Filter, 315 - 710 nm | $614.75 | Today |
FGB37H | 6" Square BG40 Colored Glass Bandpass Filter, 335 - 610 nm | $448.75 | Lead Time |
Colored Filter Kits
Thorlabs offers two filter kits that bundle our most popular longpass and bandpass colored glass filters. The FGK01 Colored Glass Filter Kit contains three filters from our bandpass family and seven from our longpass family. The Ø25 mm filters 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. The FGK01S Colored Glass Filter Kit contains the unmounted, square 2" x 2" counterparts to the filters in the FGK01.
| FGK01 Contents | FGK01S Contents | Bandpass Region or Cut-On Wavelength |
Transmission Plot |
|---|---|---|---|
| FGS900M | FGS900S | 315 - 710 nm |  |
| FGB37M | FGB37S | 335 - 610 nm |  |
| FGUVM | FGUVS | 325 - 385 nm |  |
| FGL400M | FGL400S | 400 nm |  |
| FGL495M | FGL495S | 495 nm |  |
| FGL550M | FGL550S | 550 nm |  |
| FGL610M | FGL610S | 610 nm |  |
| FGL715M | FGL715S | 715 nm |  |
| FGL780M | FGL780S | 780 nm |  |
| FGL850M | FGL850S | 850 nm |  |
Part Number | Description | Price | Availability |
|---|---|---|---|
FGK01 | Ø25 mm Round Colored Glass Filter Kit, Mounted in SM1 Lens Tubes | $526.93 | Today |
FGK01S | Colored Glass Filter Kit, Unmounted, Set of 10 | $783.97 | Today |
Filter Storage Boxes
If you purchase individual filters and would like a safe, convenient place to store them when not in use, consider our KT01 and KT03 Storage Boxes. The KT01 is designed to hold up to ten mounted Ø25 mm filters, while the KT03 can hold up to ten unmounted 2" x 2" filters.
Part Number | Description | Price | Availability |
|---|---|---|---|
KT01 | Storage Box for Mounted Ø1" (25 mm) Round Optics (Max. Capacity: 10) | $105.13 | Today |
KT03 | Storage Box for Unmounted 2" Square Optics (Max. Capacity: 10) | $98.90 | Today |