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UV Optical Bandpass Filters
270-320nm


eSource Optics Ultraviolet (UV) Optical Bandpass Filters are available at specific peak wavelengths over the Ultraviolet wavelength range of 220nm to 320nm, within the UV-C & UV-B Short to Mid-wave Ultraviolet spectrum.  Both Narrow Very Narrow & Broad Bandwidth UV Optical Bandpass Filter designs are available and designated as "FNB" & "FVN" having a 10-25nm FWHM, and "FBB" having a ~50nm FWHM.  

All UV Optical Bandpass Filters from 270nm to 326.1nm are available at select wavelengths in standard 12.5mm, 25.0mm, and 50.0mm Diameters. UV Optical Bandpass Filters from 270nm to 326.1nm are metal-dielectric-metal (MDM) design thin-film UV Bandpass Filters supplied as Unmounted and Open-Faced Filters.   Open-Faced UV Optical Bandpass Filters from 270nm to 326.1nm include a high purity UV grade Fused Silica substrate over-coated with the MDM filter coating. All UV filter substrates from 270nm to 326.1nm have a highly polished scratch & dig surface quality with less than ~5 arc minutes parallelism.  "FVN", "FNB" & "FBB" Optical Filters are available at other wavelengths from 193nm to 313nm upon request.

 

 

UV OPTICAL FILTER SPECIFICATIONS


Substrate Material: 270-296.7nm: Fused Silica       

300-326.1nm: Fused Silica & Filter Glasses

Diameter (Ø) Tolerance: ± 0.25mm

Thickness: ~1.5 - 2.5mm nominal (FNB & FBB)

~1.5mm (FVN & 300FBB Filters)                    

Surface Quality: 270-326.1nm  
~60-40 to 80-50 scratch-dig

Parallelism270-296.7nm: <=3-5 arc min. or better 

Clear Aperture: Typically central 85%

Edge Chamfer ~0.5mm x 45 deg.

Filter Blocking: Approx 10-3 to 10-4 short-wave
VUV to long-wave UV to VIS typical 

Construction270-296.7nm: Unmounted and

Open-Faced (FVN & FNB)

300-326.1nm: Edge Sealed & Mounted only (FNB)

 

 

 

                        
 

Peak Wavelength (nm)

FWHM (nm)

Min. Peak Transmission

Diameter (mm)

Product #  

Price     

ORDER     
270 +3/-0 10 +/- 2 12 % T UV Optical Bandpass Filter 25.0

25270FVN

$595.00

25270FVN

280 +3/-0 10 +/- 2 12 % T UV Optical Bandpass Filter 25.0 25280FVN $595.00 25280FVN
280 +/-3 Hg 10 +/- 2 12 % T UV Optical Bandpass Filter 50.0 50280FVN $735.00 50280FVN
280 +/-3 Hg 25 +/- 5 20 % T UV Optical Bandpass Filter 25.4 25280FNB $595.00 25280FNB
289 +3/-0 10 +/- 2 15 % T UV Optical Bandpass Filter 25.0 25289FVN $595.00 25289FVN
289 +3/-0 10 +/- 2 15 % T UV Optical Bandpass Filter 50.0 50289FVN $735.00 50289FVN
296.7 +3/-0 Hg 10 +/- 2 15 % T UV Optical Bandpass Filter 25.0 25296FVN $595.00 25296FVN
300 +3/-0 10 +/- 2 15 % T UV Optical Bandpass Filter 25.0 25300FVN $595.00 25300FVN
300 +3/-0 10 +/- 2 15 % T UV Optical Bandpass Filter 50.0 50300FVN $735.00 50300FVN
300 +/-3 25 +/- 5 20 % T UV Optical Bandpass Filter 25.0

25300FNB

$595.00

25300FNB

300 +10/-0 40 +/- 8 20 % T UV Optical Bandpass Filter 25.0

25300FBB

$595.00

25300FBB

307.1 +/-3* Zn 25 +/- 5 20 % T UV Optical Bandpass Filter 12.5**

12307FNB

$385.00

12307FNB

307.1 +3/-0 Zn 10 +/- 2 15 % T UV Optical Bandpass Filter 25.0 25307FVN $595.00 25307FVN
310.0 +3/-0 10 +/- 2 15 % T UV Optical Bandpass Filter 25.0 25310FVN $595.00 25310FVN
313 +/-3* Hg 25 +/- 5 20 % T UV Optical Bandpass Filter 12.5**

12313FNB

$385.00

12313FNB

313 +3/-0 Hg 10 +/- 2 15 % T UV Optical Bandpass Filter 25.0 25313FVN $595.00 25313FVN
313 +3/-0 Hg 10 +/- 2 15 % T UV Optical Bandpass Filter 50.0 50313FVN $735.00 50313FVN
313 +/-3 Hg 25 +/- 5 20 % T UV Optical Bandpass Filter 25.0**

25313FNB

$595.00

25313FNB

313 +/-3 Hg 25 +/- 5 20 % T UV Optical Bandpass Filter 50.0**

50313FNB

$735.00

50313FNB

326.1 +/-3* Cd 25 +/- 5 25 % T UV Optical Bandpass Filter 12.5**

12326FNB

$385.00

12326FNB

326.1 +/-3* Cd 25 +/- 5 25 % T UV Optical Bandpass Filter 25.0**

25326FNB

$595.00

25326FNB

326.1 +/-3* Cd 25 +/- 5 25 % T UV Optical Bandpass Filter 50.0**

50326FNB

$965.00

50326FNB

             

                                                           (<<<Back to 220nm-266nm Filters)                                                          

 

(** NOTE:  All Filters listed with an ** that are 12.5mm, 25.0mm & 50.0mm Diameter Optical Filters from 300nm to 326.1nm are multiple element filters and are only supplied edge sealed and mounted; except 10nm FWHM "FVN" type Filters are open-faced only)
 

Availability: eSource Optics UV Optical Filters are supplied on a per order basis.  Lead-times can vary and are typically within ~3-4 weeks.

Open-Faced UV Optical Bandpass Filters from 270nm to 296.7nm 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.

UV Optical Bandpass Filters from 300nm to 326.1nm are multiple element filters and are only supplied edge sealed and mounted as 12.5mm, 25.0mm & 50.0mm Diameter Optical Filters. 
 

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.

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

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

 


For more information on UV Optical Bandpass Filters, please refer to our VUV-UV Optical Filter Information Page 


         Also see eSource Optics VUV Narrowband Optical Bandpass Filters
  

 

 

                                                

                                                   
         eSource Optics / PMB 126, 1225 Providence Rd, Whitinsville, MA 01588

       VUV-UV Optical Filters & Mirrors/ VUV-UV Windows/Lenses & Prisms