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Unmounted Longpass Colored Glass Filters


  • 25 mm Rounds, 2" x 2" Squares, or 6" x 6" Squares
  • Economic Alternative to Thin-Film Interference Filters
  • Available in Kits

FGL550S

(2" x 2")

FGL435

FGB67

(Ø25 mm)

FGL610

FGK01

Related Items


Please Wait
Longpass Filter Selection
Ø25 mm 2" x 2" 6" x 6" Longpass Region
FGL280a FGL280S   280 - 1800 nm
FGL400a FGL400S   400 - 1800 nm
FGL420     420 - 2500 nm
FGL435a FGL435S   435 - 1800 nm
FGL455     460 - 2500 nm
FGL495a FGL495S   495 - 1800 nm
FGL515a FGL515S   515 - 1800 nm
FGL530     530 - 2500 nm
FGL550a FGL550S   550 - 1800 nm
FGL570     570 - 2500 nm
FGL590a FGL590S   590 - 1800 nm
FGL610a FGL610S FGL610H 610 - 1800 nm
FGL630     630 - 2500 nm
FGL645     650 - 2500 nm
FGL665a FGL665S   665 - 1800 nm
FGL695     700 - 2500 nm
FGL715a FGL715S   715 - 1800 nm
FGL9     721 - 1035 nm
FGL780a FGL780S FGL780H 780 - 1800 nm
FGL830     830 - 2500 nm
FGL850a FGL850S FGL850H 850 - 1800 nm
FGL1000a FGL1000S   1000 - 1800 nm
  • These filters are also available in a mounted version.

Features

  • Longpass Region Cut-On Options Available from 280 to 1000 nm
  • Ø25 mm Rounds, 2" x 2" Squares, or 6" x 6" Squares
  • Kits Include Selected Longpass and Bandpass Filters
  • Edge Blackening Available Upon Request

These longpass colored glass filters are manufactured from different colors of Schott glass and are intended for use in a wide variety of applications. In addition to the longpass filters offered here, Thorlabs also offers a series of bandpass colored glass filters. In either case, the filters are available in both round and square varieties. The 25 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" filter, we recommend the FP02 Plate Holder.

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 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. These are the same storage boxes that our kit filters arrive in. There is one box (KT01) designed for mounted Ø25 mm filters and a second (KT03) for the unmounted 2" x 2" filters.

 

Colored Glass Selection Guide
Bandpass Longpass
Mounted Unmounted AR Coated Mounted Unmounted
Colored Filter Dimensions
General Specifications
Material Schott Colored Glass
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"
<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
Item #
(Ø25 mm)
Item #
(2" Square)
Item #
(6" Square)
Schott
Glass
Description
FGL280a FGL280S   N-WG280 280 nm Longpass
FGL400a FGL400S   GG400 400 nm Longpass
FGL420     GG420 420 nm Longpass
FGL435a FGL435S   GG435 435 nm Longpass
FGL455     GG455 460 nm Longpass
FGL495a FGL495S   GG495 495 nm Longpass
FGL515a FGL515S   OG515 515 nm Longpass
FGL530     OG530 530 nm Longpass
FGL550a FGL550S   OG550 550 nm Longpass
FGL570     OG570 570 nm Longpass
FGL590a FGL590S   OG590 590 nm Longpass
FGL610a FGL610S FGL610H RG610 610 nm Longpass
FGL630     RG630 630 nm Longpass
FGL645     RG645 650 nm Longpass
FGL665a FGL665S   RG665 665 nm Longpass
FGL695     RG695 700 nm Longpass
FGL715a FGL715S   RG715 715 nm Longpass
FGL9     RG9 721 nm Longpass
FGL780a FGL780S FGL780H RG780 780 nm Longpass
FGL830     RG830 830 nm Longpass
FGL850a FGL850S FGL850H RG850 850 nm Longpass
FGL1000a FGL1000S   RG1000 1000 nm Longpass
  • These filters are also available in a mounted version.

Below are transmission plots (including surface reflections) as a function of wavelength for each of the colored glass filters presented on this page. Data was obtained for normal incidence. In each case, the shaded region indicates the range for which the transmission was >50% of the maximum transmission for that particular filter. To enlarge the plot, simply click on the plot. Thorlabs also offers bandpass colored filters.

Click on Graphs to Enlarge:

Transmission of FGL400
Transmission for FGL280
Transmission of FGL435
Transmission of FGL420
Transmission for FGL495
Transmission of FGL455
Transmission of FGL530
Transmission of FGL515
Transmission of FGL570
Transmission of FGL550
FGL610 Transmission Graph
Transmission of FGL590
Transmission of FGL645
Transmission of FGL630
Transmission of FGL695
Transmission of FGL665
Transmission of FGL9
Transmission of FGL715
Transmission of FGL830
FGL780 Transmission
Transmission of FGL1000
FGL850 Transmission

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Posted Comments:
Poster:Carrie_Hsu
Posted Date:2016-02-19 12:58:02.013
Hi, I'm Hsu from Taiwan. What's the operating temperature of FGL400S?
Poster:besembeson
Posted Date:2016-03-03 05:29:22.0
Response from Bweh at Thorlabs USA: You could typically use this in the -50 to 80 deg C temperature environments.
Poster:jlow
Posted Date:2013-01-21 16:15:00.0
Response from Jeremy at Thorlabs: The long pass and bandpass filters can be used with Xenon lamp. The specs might differ slightly since the angle of incidence is not 0°.
Poster:l.costantini
Posted Date:2013-01-11 16:23:22.247
Hi, I'm Luca Costantini from Strategie s.r.l. and i should to know if the filter long pass and bandpass operates with xenon lamp
Poster:tholste
Posted Date:2012-07-27 17:49:00.0
A response from Tor at Thorlabs to nateb: Thank you very much for contacting us. We also observe fluorescence at 532 nm for this filter - we will update this page with respect to these findings. In the meantime, I will be contacting you to discuss your application.
Poster:nateb
Posted Date:2012-07-23 11:30:48.0
Using information from the Schott website and the information contained on the Thorlabs website I chose the FGL590 longpass filter. Unfortunately, I found that the filter fluoresced strongly under 532 nm light. Using a 15-50 mW 532 DPSS laser I illuminated the backside of the filter and found that there is a visible orange glow emitting from the filter. I would expect an OD5 blocking at this wavelength (532 nm). This fluorescence effect should be listed.
Poster:tcohen
Posted Date:2012-07-17 13:49:00.0
Response from Tim at Thorlabs: Thank you for contacting us! I will email you the spectral data.
Poster:mzlin
Posted Date:2012-07-16 19:36:05.0
How do these compare to your edgepass filters in slope steepness? I had a difficult time figuring this out with only the graphs showing divisions 100 or 200 nm apart. Would it be possible to email me the spectra of the 715 and 721 longpass colored filters please? Thank you!
Poster:tcohen
Posted Date:2012-06-28 14:44:00.0
Response from Tim at Thorlabs: Thank you for your feedback! We have introduced the new FGL570 filters with 25mm OD because of the popularity of the size. We also have a larger version of the CFH1, the CFH2, for 1” diameter filters. If you are interested in ½” filters to retrofit into your system, we should be able to quote this as a custom for you and I have contacted you to discuss this option.
Poster:cbrideau
Posted Date:2012-06-27 18:52:41.0
Any chance of getting these in 1/2" round instead of 1"? I'm using the little 1/2" filter holders (CFH1) and I'd like to use these colored glass filters with them.
Poster:technicalmarketing
Posted Date:2008-02-14 17:25:57.0
We have double checked and the graphs shown in V19 are incorrect. Please refer to the web for the most up-to-date graphs
Poster:ghegenbart
Posted Date:2007-11-20 04:38:25.0
The graph for the BG40 glass in the "Graph" tab is different from the graph shown on the pdf copy of the catalog page in the "Drawings&Documents" tab.

Unmounted 280 nm Longpass Colored Glass Filters

FGL280 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick N-WG280 Schott Glass
  • Choose from 25 mm Round or 2" x 2" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL280 Support Documentation
FGL280Ø25 mm N-WG280 Colored Glass Filter, 280 nm Longpass
$34.64
Today
FGL280S Support Documentation
FGL280S2" Square N-WG280 Colored Glass Filter, 280 nm Longpass
$70.08
Today

Unmounted 400 nm Longpass Colored Glass Filters

FGL400 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick GG400 Schott Glass
  • Choose from 25 mm Round or 2" x 2" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL400 Support Documentation
FGL400Ø25 mm GG400 Colored Glass Filter, 400 nm Longpass
$34.64
Today
FGL400S Support Documentation
FGL400S2" Square GG400 Colored Glass Filter, 400 nm Longpass
$70.08
Today

Unmounted 420 nm Longpass Colored Glass Filter

FGL420 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick GG420 Schott Glass
  • 25 mm Round Filter

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL420 Support Documentation
FGL420Customer Inspired!Ø25 mm GG420 Colored Glass Filter, 420 nm Longpass
$25.00
Today

Unmounted 435 nm Longpass Colored Glass Filters

FGL435 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick GG435 Schott Glass
  • Choose from 25 mm Round or 2" x 2" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL435 Support Documentation
FGL435Ø25 mm GG435 Colored Glass Filter, 435 nm Longpass
$34.64
Today
FGL435S Support Documentation
FGL435S2" Square GG435 Colored Glass Filter, 435 nm Longpass
$70.08
Today

Unmounted 460 nm Longpass Colored Glass Filter

FGL455 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick GG455 Schott Glass
  • 25 mm Round Filter

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL455 Support Documentation
FGL455Customer Inspired!Ø25 mm GG455 Colored Glass Filter, 460 nm Longpass
$25.00
Today

Unmounted 495 nm Longpass Colored Glass Filters

FGL495 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick GG495 Schott Glass
  • Choose from 25 mm Round or 2" x 2" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL495 Support Documentation
FGL495Ø25 mm GG495 Colored Glass Filter, 495 nm Longpass
$34.64
Today
FGL495S Support Documentation
FGL495S2" Square GG495 Colored Glass Filter, 495 nm Longpass
$70.08
Today

Unmounted 515 nm Longpass Colored Glass Filters

FGL515 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick OG515 Schott Glass
  • Choose from 25 mm Round or 2" x 2" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL515 Support Documentation
FGL515Ø25 mm OG515 Colored Glass Filter, 515 nm Longpass
$34.64
Today
FGL515S Support Documentation
FGL515S2" Square OG515 Colored Glass Filter, 515 nm Longpass
$70.08
Today

Unmounted 530 nm Longpass Colored Glass Filter

FGL530 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick OG530 Schott Glass
  • 25 mm Round Filter

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL530 Support Documentation
FGL530Customer Inspired!Ø25 mm OG530 Colored Glass Filter, 530 nm Longpass
$25.00
Today

Unmounted 550 nm Longpass Colored Glass Filters

FGL550 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick OG550 Schott Glass
  • Choose from 25 mm Round or 2" x 2" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL550 Support Documentation
FGL550Ø25 mm OG550 Colored Glass Filter, 550 nm Longpass
$34.64
Today
FGL550S Support Documentation
FGL550S2" Square OG550 Colored Glass Filter, 550 nm Longpass
$70.08
Today

Unmounted 570 nm Longpass Colored Glass Filter

FGL570 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick OG570 Schott Glass
  • 25 mm Round Filter

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL570 Support Documentation
FGL570Customer Inspired!Ø25 mm OG570 Colored Glass Filter, 570 nm Longpass
$25.00
Today

Unmounted 590 nm Longpass Colored Glass Filters

FGL590 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick OG590 Schott Glass
  • Choose from 25 mm Round or 2" x 2" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL590 Support Documentation
FGL590Ø25 mm OG590 Colored Glass Filter, 590 nm Longpass
$34.64
Today
FGL590S Support Documentation
FGL590S2" Square OG590 Colored Glass Filter, 590 nm Longpass
$70.08
Today

Unmounted 610 nm Longpass Colored Glass Filters

FGL610 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick (3 mm for the 6" Version) RG610 Schott Glass
  • Choose from 25 mm Round, 2" x 2" Square, or 6" x 6" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL610 Support Documentation
FGL610Ø25 mm RG610 Colored Glass Filter, 610 nm Longpass
$34.64
Today
FGL610S Support Documentation
FGL610S2" Square RG610 Colored Glass Filter, 610 nm Longpass
$70.08
Today
FGL610H Support Documentation
FGL610H6" Square RG610 Colored Glass Filter, 610 nm Longpass
$320.00
Today

Unmounted 630 nm Longpass Colored Glass Filter

FGL630 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick RG630 Schott Glass
  • 25 mm Round Filter

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL630 Support Documentation
FGL630Customer Inspired!Ø25 mm RG630 Colored Glass Filter, 630 nm Longpass
$25.00
Today

Unmounted 650 nm Longpass Colored Glass Filter

FGL645 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick RG645 Schott Glass
  • 25 mm Round Filter

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL645 Support Documentation
FGL645Customer Inspired!Ø25 mm RG645 Colored Glass Filter, 650 nm Longpass
$25.00
Today

Unmounted 665 nm Longpass Colored Glass Filters

FGL665 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick RG665 Schott Glass
  • Choose from 25 mm Round or 2" x 2" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Please click here for an Excel spreadsheet containing the raw transmission data.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL665 Support Documentation
FGL665Ø25 mm RG665 Colored Glass Filter, 665 nm Longpass
$34.64
Today
FGL665S Support Documentation
FGL665S2" Square RG665 Colored Glass Filter, 665 nm Longpass
$70.08
Today

Unmounted 700 nm Longpass Colored Glass Filter

FGL695 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick RG695 Schott Glass
  • 25 mm Round Filter

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Please click here for an Excel spreadsheet containing the raw transmission data.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL695 Support Documentation
FGL695Customer Inspired!Ø25 mm RG695 Colored Glass Filter, 695 nm Longpass
$25.00
Today

Unmounted 715 nm Longpass Colored Glass Filters

FGL715 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick RG715 Schott Glass
  • Choose from 25 mm Round or 2" x 2" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL715 Support Documentation
FGL715Ø25 mm RG715 Colored Glass Filter, 715 nm Longpass
$39.52
Today
FGL715S Support Documentation
FGL715S2" Square RG715 Colored Glass Filter, 715 nm Longpass
$70.08
Today

Unmounted 721 nm Longpass Colored Glass Filter

FGL9 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick RG9 Schott Glass
  • 25 mm Round Filter

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL9 Support Documentation
FGL9Customer Inspired!Ø25 mm RG9 Colored Glass Filter, 721 nm Longpass
$25.00
Today

Unmounted 780 nm Longpass Colored Glass Filters

FGL780 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick (3 mm for the 6" Version) RG780 Schott Glass
  • Choose from 25 mm Round, 2" x 2" Square, or 6" x 6" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL780 Support Documentation
FGL780Ø25 mm RG780 Colored Glass Filter, 780 nm Longpass
$39.52
Today
FGL780S Support Documentation
FGL780S2" Square RG780 Colored Glass Filter, 780 nm Longpass
$70.08
Today
FGL780H Support Documentation
FGL780H6" Square RG780 Colored Glass Filter, 780 nm Longpass
$495.00
Today

Unmounted 830 nm Longpass Colored Glass Filter

FGL830 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick RG830 Schott Glass
  • 25 mm Round Filter

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL830 Support Documentation
FGL830Customer Inspired!Ø25 mm RG830 Colored Glass Filter, 830 nm Longpass
$25.00
Today

Unmounted 850 nm Longpass Colored Glass Filters

FGL850 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick (3 mm for the 6" Version) RG850 Schott Glass
  • Choose from 25 mm Round, 2" x 2" Square, or 6" x 6" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL850 Support Documentation
FGL850Ø25 mm RG850 Colored Glass Filter, 850 nm Longpass
$49.44
Today
FGL850S Support Documentation
FGL850S2" Square RG850 Colored Glass Filter, 850 nm Longpass
$72.48
Today
FGL850H Support Documentation
FGL850H6" Square RG850 Colored Glass Filter, 850 nm Longpass
$495.00
Today

Unmounted 1000 nm Longpass Colored Glass Filters

FGL1000 Transmission Curve
Click Here for Raw Data
Click to Enlarge
  • Fabricated from 2 mm Thick RG1000 Schott Glass
  • Choose from 25 mm Round or 2" x 2" Square

Transmission (including surface reflections) is plotted as a function of wavelength to the right. The region shaded in blue represents the range over which this filter is transmissive. At wavelengths shorter than the cut-on wavelength, the filter blocks the light.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGL1000 Support Documentation
FGL1000Ø25 mm RG1000 Colored Glass Filter, 1000 nm Longpass
$34.64
Today
FGL1000S Support Documentation
FGL1000S2" Square RG1000 Colored Glass Filter, 1000 nm Longpass
$70.08
Today

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 part number and bandpass region (for bandpass filters) or cut-on wavelength (for longpass filters), and ship in a KT01 Storage 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 Transmission Plot
FGS900M FGS900S 315 - 710 nm Plot
FGB37M FGB37S 335 - 610 nm Plot
FGUVM FGUVS 325 - 385 nm Plot
FGL400M FGL400S 400 - 1800 nm Plot
FGL495M FGL495S 495 - 1800 nm Plot
FGL550M FGL550S 550 - 1800 nm Plot
FGL610M FGL610S 610 - 1800 nm Plot
FGL715M FGL715S 715 - 1800 nm Plot
FGL780M FGL780S 780 - 1800 nm Plot
FGL850M FGL850S 850 - 1800 nm Plot
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FGK01 Support Documentation
FGK01Ø25 mm Round Colored Glass Filter Kit, Mounted in SM1 Lens Tubes
$423.70
Today
FGK01S Support Documentation
FGK01SColored Glass Filter Kit, Unmounted, Set of 10
$630.72
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. These are the same storage boxes that our prepackaged filter kits ship with. 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.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
KT01 Support Documentation
KT01Storage Box for Mounted Ø1" (25 mm) Round Optics (Max. Capacity: 10)
$86.70
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KT03 Support Documentation
KT03Storage Box for Unmounted 2" Square Optics (Max. Capacity: 10)
$81.60
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