UV Optical Filters
220nm to 266nm

eSource Optics Ultraviolet  (UV) Optical Filters are available at specific peak wavelengths over the UV wavelength range of 220nm to 320nm.  Both Narrow & Broad Bandwidth UV optical filter designs are available and designated as "FNB" having a 20nm FWHM, and "FBB" having a 35-50nm FWHM. 

All UV optical filters are available in standard 12.7mm, 25.4mm, and 50.8mm Diameters. UV Optical Filters are metal-dielectric-metal (MDM) design thin-film UV filters supplied as Unmounted and Open-Faced Filters.  Open-Faced UV optical filters include a high purity UV grade Fused Silica substrate over-coated with the MDM filter coating. All UV filter substrates are highly polished to a 20-10 scratch & dig surface quality with less than 3 arc minutes parallelism. 

Open-Faced UV optical filters are fairly soft and must be handled with due care. For added durability and protection from the environment, UV f
ilters can be special ordered with a UV Fused Silica cover window that is edge sealed to the Open-faced filter.  For more information on covered UV Optical Filters and/or UV filter peak wavelengths not listed below, please contact eSource Optics.

All eSource Optics UV Optical Filters are supplied with individual % Transmission Calibration Curves detailing UV spectral performance characteristics.  UV Optical Filters are mainly used in UV light source applications requiring a narrow spectral bandwidth and a high signal-to-noise ratio.

For more information on UV Optical Filters, please refer to our Optics Tutorial page

                                        

UV OPTICAL FILTER SPECIFICATIONS

Substrate Material : UV Grade Fused Silica       

Diameter (Ø) Tolerance: ± 0.25mm

Thickness: ~2.5 - 3.0mm                       

Surface Quality:  <60-40 scratch-dig

Parallelism: <15 arc minutes or better 

Clear Aperture: central 80%

Edge Chamfer: ~0.5mm x 45 degrees

Filter FWHM:  FNB = 20nm 
                     FBB = 35-50nm
Filter Blocking: 10-3 to 10-4 X-ray to FIR
Construction: Unmounted and Open-Faced;

can be covered (contact us)


                                          

Peak Wavelength (nm)

FWHM (nm)

Min. Peak Transmission

Diameter (mm)

Product #

Price     

Order*     
220 +/- 2.5 20 +/- 5 15 % T Optical Filter 12.7 12220FNB $325.00 12220FNB
220 +/- 2.5 20 +/- 5 15 % T Optical Filter 25.4

25220FNB

$365.00

25220FNB

220 +/- 2.5 20 +/- 5 15% T Optical Filter 50.8

50220FNB

$495.00

50220FNB

220 +/- 5 35 +/- 10 30 % T Optical Filter 12.7

12220FBB

$325.00

12220FBB

220 +/- 5 35 +/- 10 30 % T Optical Filter 25.4

25220FBB

$365.00

25220FBB

220 +/- 5 35 +/- 10 30 % T Optical Filter 50.8

50220FBB

$495.00

50220FBB

222 +/- 2.5 20 +/- 5 15 % T Optical Filter 12.7

12222FNB

$325.00

12222FNB

222 +/- 2.5 20 +/- 5 15 % T Optical Filter 25.4

25222FNB

$365.00

25222FNB

222 +/- 2.5 20 +/- 5 15 % T Optical Filter 50.8

50222FNB

$495.00

50222FNB

230 +/- 2.5 20 +/- 5 15 % T Optical Filter 12.7

12230FNB

$325.00

12230FNB

230 +/- 2.5 20 +/- 5 15 % T Optical Filter 25.4

25230FNB

$365.00

25230FNB

230 +/- 2.5 20 +/- 5 15 % T Optical Filter 50.8

50230FNB

$495.00

50230FNB

230 +/- 5 35 +/- 10 30 % T Optical Filter 12.7

12230FBB

$325.00

12230FBB

230 +/- 5 35 +/- 10 30 % T Optical Filter 25.4

25230FBB

$365.00

25230FBB

230 +/- 5 35 +/- 10 30 % T Optical Filter 50.8

50230FBB

$495.00

50230FBB

240 +/- 2.5 20 +/- 5 15 % T Optical Filter 12.7

12240FNB

$325.00

12240FNB

240 +/- 2.5 20 +/- 5 15 % T Optical Filter 25.4

25240FNB

$365.00

25240FNB

240 +/- 2.5 20 +/- 5 15 % T Optical Filter 50.8

50240FNB

$495.00

50240FNB

240 +/- 5 35 +/- 10 30 % T Optical Filter 12.7

12240FBB

$325.00

12240FBB

240 +/- 5 35 +/- 10 30 % T Optical Filter 25.4

25240FBB

$365.00

25240FBB

240 +/- 5 35 +/- 10 30 % T Optical Filter 50.8

50240FBB

$495.00

50240FBB

248 +/- 2.5 20 +/- 5 15 % T Optical Filter 12.7

12248FNB

$325.00

12248FNB

248 +/- 2.5 20 +/- 5 15 % T Optical Filter 25.4

25248FNB

$365.00

25248FNB

248 +/- 2.5 20 +/- 5 15 % T Optical Filter 50.8

50248FNB

$495.00

50248FNB

250 +/- 2.5 20 +/- 5 15 % T Optical Filter 12.7

12250FNB

$325.00

12250FNB

250 +/- 2.5 20 +/- 5 15 % T Optical Filter 25.4

25250FNB

$365.00

25250FNB

250 +/- 2.5 20 +/- 5 15 % T Optical Filter 50.8

50250FNB

$495.00

50250FNB

250 +/- 2.5 40 +/- 10 30 % T Optical Filter 12.7

12250FBB

$325.00

12250FBB

250 +/- 5 40 +/- 10 30 % T Optical Filter 25.4

25250FBB

$365.00

25250FBB

250 +/- 5 40 +/- 10 30 % T Optical Filter 50.8

50250FBB

$495.00

50250FBB

253.7 +/- 2.5 20 +/- 5 15 % T Optical Filter 12.7 12254FNB $325.00 12254FNB
253.7 +/- 2.5 20 +/- 5 15 % T Optical Filter 25.4

25254FNB

$365.00

25254FNB

253.7 +/- 2.5 20 +/- 5 15 % T Optical Filter 50.8 50254FNB $495.00 50254FNB
260 +/- 2.5 20 +/- 5 15 % T Optical Filter 12.7

12260FNB

$325.00

12260FNB

260 +/- 2.5 20 +/- 5 15 % T Optical Filter 25.4

25260FNB

$365.00

25260FNB

260 +/- 2.5 20 +/- 5 15 % T Optical Filter 50.8

50260FNB

$495.00

50260FNB

260 +/- 5 40 +/- 10 30 % T Optical Filter 12.7

12260FBB

$325.00

12260FBB

260 +/- 5 40 +/- 10 30 % T Optical Filter 25.4

25260FBB

$365.00

25260FBB

260 +/- 5 40 +/- 10 30 % T Optical Filter 50.8

50260FBB

$495.00

50260FBB

266 +/- 2.5 20 +/- 5 15% T Optical Filter 12.7

12266FNB

$325.00

12266FNB

266 +/- 2.5 20 +/- 5 15 % T Optical Filter 25.4

25266FNB

$365.00

25266FNB

266 +/- 2.5 20 +/- 5 15 % T Optical Filter 50.8

50266FNB

$495.00

50266FNB

266 +/- 5 40 +/- 10 30 % T Optical Filter 12.7

12266FBB

$325.00

12266FBB

266 +/- 5 40 +/- 10 30 % T Optical Filter 25.4

25266FBB

$365.00

25266FBB

266 +/- 5 40 +/- 10 30 % T Optical Filter 50.8

50266FBB

$495.00

50266FBB

 (*Contact us to order) 
                                        
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