Colored Glass Visible Absorbing UV Bandpass Filters

These dark glass filters absorb in the visible wavelength region and transmit in the ultraviolet (UV) wavelength region. They are made with high quality Hoya U-330 / U-340 or Schott UG visible absorbing coloered glass. They are designded for extracting UV wavelengths.

UV transmitting / visible absorbing colored glass filters
Hoya U-330 or U-340 dark glass
Schott UG series blue glass
25.4 mm diameter or 50.8 x 50.8 mm

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Showing 7 of 7 total products

Compatibility:

Description	Compatibility	Size	Center Wavelength	Avail.	Price
FSQ-U330Optical Filter, Visible Absorbing, 50.8 x 50.8 mm, Hoya U-330 Glass	UNIVERSAL	50.8 x 50.8 mm	330 nm	In Stock	$198
FSQ-U340Optical Filter, Visible Absorbing, 50.8 x 50.8 mm, Hoya U-340 Glass	UNIVERSAL	50.8 x 50.8 mm	340 nm	In Stock	$157
FSR-U330Optical Filter, Visible Absorbing, 25.4 mm Diameter, Hoya U-330 Glass	UNIVERSAL	Ø25.4 mm	330 nm	In Stock	$91
FSR-UG5Bandpass Filter, Colored Glass, 25.4 mm, UV Bandpass, UG5 Glass	UNIVERSAL	Ø25.4 mm	318 nm	In Stock	$82
FSR-UG11Bandpass Filter, Colored Glass, 25.4 mm, UV Bandpass, UG11 Glass	UNIVERSAL	Ø25.4 mm	325 nm	In Stock	$91
FSR-UG1Bandpass Filter, Colored Glass, 25.4 mm, UV Bandpass, UG1 Glass	UNIVERSAL	Ø25.4 mm	355 nm	In Stock	$82
FSQ-UG5Bandpass Filter, Colored Glass, 50.8 x 50.8 mm, UV Bandpass, UG5 Glass	UNIVERSAL	50.8 x 50.8 mm	318 nm	In Stock	$112

Specifications

Type
Visible Absorbing Filter
Angle of Incidence
0°
Size Tolerance
±0.3 mm
Thickness
2.0 to 3.0 mm, typical
Surface Quality
60-40 scratch-dig
Damage Threshold
30 W/cm CW², Typical

Wedge
≤3 arc min
Clear Aperture
central ≥ 80% of area
Chamfers
Up to 1 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Features

Hoya U-330 or U-340 Glass

Hoya ultraviolet transmitting / visible absorbing filter glass is used to pass UV wavelengths while blocking the visible spectrum. Please see the transmittance curve for more information.