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UV-cut filters
UV-Cut Filters / UV Blocking Optics (UV Stop Filters)
UV-cut filters (commonly referred to as UV blocking filters, UV stop filters, or ultraviolet rejection optics) are optical elements designed to eliminate harmful ultraviolet radiation ($100\text{ nm} - 400\text{ nm}$) through dielectric reflection or specialized glass matrix absorption, while maintaining ultra-high transmittance across the visible light spectrum ($400\text{ nm} - 700\text{ nm}$).
Functions:
Engineered via multi-layer inorganic dielectric thin-film coatings (PVD-EBGE) deposited on optical glass substrates (e.g., SCHOTT B270, Borofloat 33) or specialized UV-absorbing glass formulations. They block destructive UVA, UVB, and UVC radiation, protecting sensitive optical sensors, organic polymers, delicate museum artifacts, and art displays from UV degradation, yellowing, and thermal fading while delivering crystal-clear visible light throughput.
Applications:
Precision museum and artwork illumination, architectural floodlighting, studio light engines, optical sensor windows, camera lenses, medical inspection equipment, and outdoor optical instruments.
#UVCUT525 #Information and Notes
ITEM NO: UVCUT370
Spectral Characteristics
T50%=370 +/- 15nm
Tave>88% @ 430-700nm
Tave< 1% @ 200-340nm
Physical Characteristics
Glass: 1.1mm
Tempered Glass: 2.0, 3.0mm
Borosilicate: 1.1mm
Square: 8x8 - 310x320mm
Round: Dia8 - 300mm
Resistant Temperature
Glass: 150℃
Tempered Glass:250℃
Borosilicate: 450℃
ITEM NO: UVCUT400
Spectral Characteristics
T50%=400 +/- 15nm
Tave>88% @ 450-700nm
Tave<1% @ 200-380nm
Physical Characteristics
Glass: 1.1mm
Tempered Glass: 2.0, 3.0mm
Borosilicate: 1.1mm
Square: 8x8 - 310x320mm
Round: Dia8 - 300mm
Resistant Temperature
Glass: 150℃
Tempered Glass:250℃
Borosilicate: 450℃
ITEM NO: UVCUT425
Spectral Characteristics
T50%=425 +/- 15nm
Tave>88% @ 450-700nm
Tave<1% @ 200-400nm
Physical Characteristics
Glass: 1.1mm
Tempered Glass: 2.0, 3.0mm
Borosilicate: 1.1mm
Square: 8x8 - 310x320mm
Round: Dia8 - 300mm
Resistant Temperature
Glass: 150℃
Tempered Glass:250℃
Borosilicate: 450℃
ITEM NO: UVCUT525
Spectral Characteristics
T50%=525 +/- 15nm
Tave>88% @ 550-700nm
Tave<1% @ 200-500nm
Physical Characteristics
Glass: 1.1mm
Tempered Glass: 2.0, 3.0mm
Borosilicate: 1.1mm
Square: 8x8 - 310x320mm
Round: Dia8 - 300mm
Resistant Temperature
Glass: 150℃
Tempered Glass:250℃
Borosilicate: 450℃
Information and Notes
1. UV-Cut filters feature multi-layer dielectric interference coatings comprising approximately 28 layers vacuum-deposited on optical glass substrates to achieve sharp UV cutoff edges and high visible transmittance.
2. Spectral transmission curves are optimized for normal incidence (0° angle of incidence, AOI). Operating at larger incidence angles causes a blue shift, shifting spectral edge characteristics toward shorter wavelengths.
3. Manufactured using Physical Vapor Deposition with Electron Beam Gun Evaporation (PVD-EBGE) technology, providing high coating density, superior environmental durability, and high thermal resistance.
4. Transmittance curves reflect actual physical sample measurement data and are subject to minor manufacturing tolerances between production lots while remaining strictly within engineering spectral limits.
5. Spectral definitions for ultraviolet light bands:
• UV-A: 315 nm – 400 nm
• UV-B: 280 nm – 315 nm
• UV-C: 100 nm – 280 nm
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