UV Optical Filters

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

All UV Optical Bandpass Filters are available in standard 12.7mm, 25.4mm, and 50.8mm Diameters. UV Optical Bandpass Filters are metal-dielectric-metal (MDM) design thin-film UV Bandpass Filters supplied as Unmounted and Open-Faced Filters.

Open-Faced UV Optical Bandpass 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 Bandpass 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 & edge sealed UV Optical Filters and/or UV filter peak wavelengths not listed below, please contact eSource Optics.

All eSource Optics UV Optical Bandpass Filters are supplied with individual % Transmission Calibration Curves detailing normal incidence UV spectral performance characteristics. UV Optical bandpass 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 Bandpass Filters, please refer to our Optics Tutorial page.

UV OPTICAL FILTER SPECIFICATIONS

Substrate Material : UV Grade Fused Silica

Diameter (Ø) Tolerance: ± 0.25mm

Thickness: ~1.5 - 5.0mm

Surface Quality: <=20-10 scratch-dig

Parallelism: <=3 arc minutes or better

Clear Aperture: central 80%

Edge Chamfer: ~0.5mm x 45 degrees
Filter FWHM: FNB = 20nm
FBB = 35-50nm
Filter Blocking: Approx 10^-3 to 10^-4 short-wave
VUV to long-wave UV to FIR typical

Construction: Unmounted and Open-Faced;

can be covered (contact us)

See typical VUV-UV Narrowband Filter "FNB" Transmission Curves

See typical VUV-UV Broadband Filter "FBB" Transmission Curves

Peak Wavelength (nm)	FWHM (nm)	Min. Peak Transmission	Diameter (mm)	Product #	Price	ORDER
270 +/- 2.5	20 +/- 5	15 % T Optical Bandpass Filter	12.7	12270FNB	$365.00	12270FNB
270 +/- 2.5	20 +/- 5	15 % T Optical Bandpass Filter	25.4	25270FNB	$395.00	25270FNB
270 +/- 2.5	20 +/- 5	15 % T Optical Bandpass Filter	50.8	50270FNB	$525.00	50270FNB
270 +/- 5	45 +/- 10	30 % T Optical Bandpass Filter	12.7	12270FBB	$365.00	12270FBB
270 +/- 5	45 +/- 10	30 % T Optical Bandpass Filter	25.4	25270FBB	$395.00	25270FBB
270 +/- 5	45 +/- 10	30 % T Optical Bandpass Filter	50.8	50270FBB	$525.00	50270FBB
280 +/- 2.5 Hg	20 +/- 5	15 % T Optical Bandpass Filter	12.7	12280FNB	$365.00	12280FNB
280 +/- 2.5 Hg	20 +/- 5	15 % T Optical Bandpass Filter	25.4	25280FNB	$395.00	25280FNB
280 +/- 2.5 Hg	20 +/- 5	15 % T Optical Bandpass Filter	50.8	50280FNB	$525.00	50280FNB
280 +/- 5 Hg	45 +/- 10	30 % T Optical Bandpass Filter	12.7	12280FBB	$365.00	12280FBB
280 +/- 5 Hg	45 +/- 10	30 % T Optical Bandpass Filter	25.4	25280FBB	$395.00	25280FBB
280 +/- 5 Hg	45 +/- 10	30 % T Optical Bandpass Filter	50.8	50280FBB	$525.00	50280FBB
290 +/- 2.5	20 +/- 5	15 % T Optical Bandpass Filter	12.7	12290FNB	$365.00	12290FNB
290 +/- 2.5	20 +/- 5	15 % T Optical Bandpass Filter	25.4	25290FNB	$395.00	25290FNB
290 +/- 2.5	20 +/- 5	15 % T Optical Bandpass Filter	50.8	50290FNB	$525.00	50290FNB
290 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	12.7	12290FBB	$365.00	12290FBB
290 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	25.4	25290FBB	$395.00	25290FBB
290 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	50.8	50290FBB	$525.00	50290FBB
296.7 +/- 2.5 Hg	20 +/- 5	15 % T Optical Bandpass Filter	12.7	12296FNB	$365.00	12296FNB
296.7 +/- 2.5 Hg	20 +/- 5	15 % T Optical Bandpass Filter	25.4	25296FNB	$395.00	25296FNB
296.7 +/- 2.5 Hg	20 +/- 5	15 % T Optical Bandpass Filter	50.8	50296FNB	$525.00	50296FNB
300 +/- 2.5	20 +/- 7.5	15 % T Optical Bandpass Filter	12.7	12300FNB	$365.00	12300FNB
300 +/- 2.5	20 +/- 7.5	15 % T Optical Bandpass Filter	25.4	25300FNB	$395.00	25300FNB
300 +/- 2.5	20 +/- 7.5	15 % T Optical Bandpass Filter	50.8	50300FNB	$525.00	50300FNB
300 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	12.7	12300FBB	$365.00	12300FBB
300 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	25.4	25300FBB	$395.00	25300FBB
300 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	50.8	50300FBB	$525.00	50300FBB
310 +/- 2.5	20 +/- 7.5	15 % T Optical Bandpass Filter	12.7	12310FNB	$365.00	12310FNB
310 +/- 2.5	20 +/- 7.5	15 % T Optical Bandpass Filter	25.4	25310FNB	$395.00	25310FNB
310 +/- 2.5	20 +/- 7.5	15 % T Optical Bandpass Filter	50.8	50310FNB	$525.00	50310FNB
310 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	12.7	12310FBB	$365.00	12310FBB
310 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	25.4	25310FBB	$395.00	25310FBB
310 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	50.8	50310FBB	$525.00	50310FBB
313 +/- 2.5 Hg	20 +/- 7.5	15 % T Optical Bandpass Filter	12.7	12313FNB	$365.00	12313FNB
313 +/- 2.5 Hg	20 +/- 7.5	15 % T Optical Bandpass Filter	25.4	25313FNB	$395.00	25313FNB
313 +/- 2.5 Hg	20 +/- 7.5	15 % T Optical Bandpass Filter	50.8	50313FNB	$525.00	50313FNB
320 +/- 2.5	20 +/- 7.5	15 % T Optical Bandpass Filter	12.7	12320FNB	$365.00	12320FNB
320 +/- 2.5	20 +/- 7.5	15 % T Optical Bandpass Filter	25.4	25320FNB	$395.00	25320FNB
320 +/- 2.5	20 +/- 7.5	15 % T Optical Bandpass Filter	50.8	50320FNB	$525.00	50320FNB
320 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	12.7	12320FBB	$365.00	12320FBB
320 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	25.4	25320FBB	$395.00	25320FBB
320 +/- 5	50 +/- 10	30 % T Optical Bandpass Filter	50.8	50320FBB	$525.00	50320FBB

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         Also see eSource Optics VUV Narrowband Optical Bandpass Filters

             VUV-UV Optical Filters & Mirrors/Windows/Lenses/Prisms/Optics Cases & Boxes