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UV SYSTEMS, Inc. has launched the new dichroic thin-film filter that has virtually no solarization.  After a four-year research and development project UV SYSTEMS has developed a SW filter (the EverBright) that is superior to any glass SW filter.  The EverBright has two primary advantages over any other SW filter:

  1. Delivers 75% transmission or more at 254 nm.
  2. No solarization or virtually no solarization and will maintain that 75% transmission for more than 175,000 hours.

While the best glass filters (Hoya Optics U-325C) have 50% (or less) transmission after only 100 hours of SW exposure, and after that they continue to solarize.


This life/solarization test was conducted from November 17, 2022, through January 23, 2023.  The SW UV was from a Dual TripleBright 3 with two LS-60-254 lamps but without any filters.  Five FS-20EB EverBright filters were tested and one Hoya Optics U-325C filter.  The results of five FS-20EB were averaged together.

The EverBright filters come in two sizes:

FS-20EB at 2” x 5.5” designed for all SuperBright UV lights. The Conversion kit is $795.00.  The Conversion kit includes the FS-20EB EverBright filter, two filter holder brackets, the filter guard, and hardware.

FS-60EB at 2.65” x 9.25” where two of these are used for all TripleBright and Dual TripleBright UV lights.  The Conversion kit is $3,799.00.  The Conversion kit includes two FS-60EB EverBright filters, four filter holder brackets, and hardware.

Purchase your new UV light with an EverBright filter today.

US Patent 11,788,959



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Renton, WA  98058

Cell (206) 818-1084


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