eSource Optics Ultraviolet (UV) Optical Filters are available at specific peak wavelengths over the Ultraviolet 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 filters 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 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*
270 +/- 2.5	20 +/- 5	15 % T Optical Filter	12.7	12270FNB	$330.00	12270FNB
270 +/- 2.5	20 +/- 5	15 % T Optical Filter	25.4	25270FNB	$375.00	25270FNB
270 +/- 2.5	20 +/- 5	15 % T Optical Filter	50.8	50270FNB	$500.00	50270FNB
270 +/- 5	45 +/- 10	30 % T Optical Filter	12.7	12270FBB	$330.00	12270FBB
270 +/- 5	45 +/- 10	30 % T Optical Filter	25.4	25270FBB	$375.00	25270FBB
270 +/- 5	45 +/- 10	30 % T Optical Filter	50.8	50270FBB	$500.00	50270FBB
280 +/- 2.5	20 +/- 5	15 % T Optical Filter	12.7	12280FNB	$330.00	12280FNB
280 +/- 2.5	20 +/- 5	15 % T Optical Filter	25.4	25280FNB	$375.00	25280FNB
280 +/- 2.5	20 +/- 5	15 % T Optical Filter	50.8	50280FNB	$500.00	50280FNB
280 +/- 5	45 +/- 10	30 % T Optical Filter	12.7	12280FBB	$330.00	12280FBB
280 +/- 5	45 +/- 10	30 % T Optical Filter	25.4	25280FBB	$375.00	25280FBB
280 +/- 5	45 +/- 10	30 % T Optical Filter	50.8	50280FBB	$500.00	50280FBB
290 +/- 2.5	20 +/- 5	15 % T Optical Filter	12.7	12290FNB	$330.00	12290FNB
290 +/- 2.5	20 +/- 5	15 % T Optical Filter	25.4	25290FNB	$375.00	25290FNB
290 +/- 2.5	20 +/- 5	15 % T Optical Filter	50.8	50290FNB	$500.00	50290FNB
290 +/- 5	50 +/- 10	30 % T Optical Filter	12.7	12290FBB	$330.00	12290FBB
290 +/- 5	50 +/- 10	30 % T Optical Filter	25.4	25290FBB	$375.00	25290FBB
290 +/- 5	50 +/- 10	30 % T Optical Filter	50.8	50290FBB	$500.00	50290FBB
296.7 +/- 2.5	20 +/- 5	15 % T Optical Filter	12.7	12296FNB	$330.00	12296FNB
296.7 +/- 2.5	20 +/- 5	15 % T Optical Filter	25.4	25296FNB	$375.00	25296FNB
296.7 +/- 2.5	20 +/- 5	15 % T Optical Filter	50.8	50296FNB	$500.00	50296FNB
300 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	12.7	12300FNB	$330.00	12300FNB
300 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	25.4	25300FNB	$375.00	25300FNB
300 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	50.8	50300FNB	$500.00	50300FNB
300 +/- 5	50 +/- 10	30 % T Optical Filter	12.7	12300FBB	$330.00	12300FBB
300 +/- 5	50 +/- 10	30 % T Optical Filter	25.4	25300FBB	$375.00	25300FBB
300 +/- 5	50 +/- 10	30 % T Optical Filter	50.8	50300FBB	$500.00	50300FBB
310 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	12.7	12310FNB	$330.00	12310FNB
310 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	25.4	25310FNB	$375.00	25310FNB
310 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	50.8	50310FNB	$500.00	50310FNB
310 +/- 5	50 +/- 10	30 % T Optical Filter	12.7	12310FBB	$330.00	12310FBB
310 +/- 5	50 +/- 10	30 % T Optical Filter	25.4	25310FBB	$375.00	25310FBB
310 +/- 5	50 +/- 10	30 % T Optical Filter	50.8	50310FBB	$500.00	50310FBB
313 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	12.7	12313FNB	$330.00	12313FNB
313 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	25.4	25313FNB	$375.00	25313FNB
313 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	50.8	50313FNB	$500.00	50313FNB
320 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	12.7	12320FNB	$330.00	12320FNB
320 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	25.4	25320FNB	$375.00	25320FNB
320 +/- 2.5	20 +/- 7.5	15 % T Optical Filter	50.8	50320FNB	$500.00	50320FNB
320 +/- 5	50 +/- 10	30 % T Optical Filter	12.7	12320FBB	$330.00	12320FBB
320 +/- 5	50 +/- 10	30 % T Optical Filter	25.4	25320FBB	$375.00	25320FBB
320 +/- 5	50 +/- 10	30 % T Optical Filter	50.8	50320FBB	$500.00	50320FBB

(*Contact us to order)



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