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UV pass filters/UV Filters
UV-Pass Filters / Bandpass Optics (UV Transmitting Optics)
UV-pass filters (commonly referred to as blacklight glass filters, UV bandpass filters, or ultraviolet transmitting optics) are specialized optical components designed to selectively transmit specific ultraviolet wavelength bands (UVA, UVB, or UVC) while deeply attenuating or completely blocking unwanted visible light ($400\text{ nm} - 700\text{ nm}$) and near-infrared radiation.
Functions:
Engineered using multi-layer inorganic dielectric interference coatings deposited via PVD-EBGE on optical glass or specialized absorptive black glass substrates (e.g., ZWB/UG series). They provide high peak UV transmittance in targeted bands (such as 365 nm, 313 nm, or 254 nm) with deep out-of-band visible rejection (OD3–OD5+), ensuring maximum signal purity and high signal-to-noise ratio in UV detection, curing, and fluorescent inspection systems.
Applications:
UV curing systems, medical UV phototherapy devices, forensic crime scene investigation, fluorescence spectroscopy, non-destructive testing (NDT), counterfeit currency validation, and UV mineral analysis.
#Information and Notes
ITEM NO: UV445
Spectral Characteristics
T50%=445 +/- 10nm
Tave>75% @ 390-420nm
Tave<5% @ 470-700nm
Physical Characteristics
Glass: 0.4, 0.55, 0.7, 1.1mm
Borosilicate: 1.1mm
Square: 8x8 - 310x320mm
Round: Dia8 - 300mm
Resistant Temperature
Glass: 150℃
Borosilicate: 450℃
ITEM NO: UV410
Spectral Characteristics
T50%=410 +/- 10nm
Tave>65% @ 380-400nm
Tave<5% @ 450-700nm
Physical Characteristics
Glass: 0.4, 0.55, 0.7, 1.1mm
Borosilicate: 1.1mm
Square: 8x8 - 310x320mm
Round: Dia8 - 300mm
Resistant Temperature
Glass: 150℃
Borosilicate: 450℃
ITEM NO: UV1
Spectral Characteristics
Tave>60@ 320-340nm
Tave<2% @ 430-650nm
Tave<2% @ 780-1100nm
Physical Characteristics
Glass filters: 1.5, 2, 3, 4mm
Square: 8x8 - 150x150mm
Round: Dia8 - 150mm
Resistant Temperature
Glass filters：100℃
ITEM NO: UV2
Spectral Characteristics
Tave>60@ 345-355nm
Tave<2% @ 430-680nm
Tave<30% @ 700-1100nm
Physical Characteristics
Glass filters: 1.5, 2, 3, 4mm
Square: 8x8 - 150x150mm
Round: Dia8 - 150mm
Resistant Temperature
Glass filters：100℃
ITEM NO: UV3
Spectral Characteristics
Tave>60@ 290-340nm
Tave<2% @ 450-660nm
Tave<50% @ 700-1100nm
Physical Characteristics
Glass filters: 1.5, 2, 3, 4mm
Square: 8x8 - 150x150mm
Round: Dia8 - 150mm
Resistant Temperature
Glass filters：100℃
Spectral Characteristics
Tave>80@ 290-340nm
Tave<2% @ 500-650nm
Tave<55% @ 700-1100nm
Physical Characteristics
Glass filters: 1.5mm
Square: 8x8 - 150x150mm
Round: Dia8 - 150mm
Resistant Temperature
Glass filters：100℃
Information and Notes
1. UV-pass filters (including UV445 and UV410 interference types) feature precision thin-film dielectric coatings comprising 40 to 48 layers vacuum-deposited on optical substrates to achieve high UV peak transmission and deep visible attenuation.
2. Vacuum thin-film depositions are executed using Physical Vapor Deposition with Electron Beam Gun Evaporation (PVD-EBGE) technology, ensuring exceptional coating packing density, precise spectral bandpass placement, and robust durability.
3. UV1, UV2, and UV3 series are absorptive glass filters (colored glass) engineered to absorb visible wavelengths while transmitting targeted ultraviolet spectral bands.
4. Transmittance curves reflect actual physical sample measurement data and are subject to minor manufacturing tolerances between production lots while remaining strictly within engineering optical specifications.
5. Absorptive optical glass components are generically referred to as "colored glass filters" or "color filters."
6. Spectral transmittance curves represent physical sample measurements captured at normal incidence (0° angle of incidence).
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