Coated Colored Glass Absorptive UV Bandpass Filters

The colored glass bandpass optical filters transmit in the ultraviolet (UV) wavelength region and absorb in the visible wavelength region. They are offered in 12.7 and 25.4 mm diameter or 50.8 mm square sizes and are coated for better resistance to humid environments.

UV transmitting & visible absorbing
12.7 and 25.4 mm diameter or 50.8 mm square
Coated for better resistance to humid environments

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Showing 10 of 11 total products

Compatibility:

Description	Compatibility	Size	Thickness	Center Wavelength	Avail.	Price
FR-UG11-CColored Glass Filter, Coated, Ø12.7 mm, UV Bandpass, UG11	UNIVERSAL	Ø12.7 mm	1.9 to 3.1 mm	325 nm	In Stock	$66
FSR-UG5-CColored Glass Filter, Coated, Ø25.4 mm, UV Bandpass, UG5	UNIVERSAL	Ø25.4 mm	1.9 to 3.1 mm	318 nm	In Stock	$93
FSR-UG11-CColored Glass Filter, Coated, Ø25.4 mm, UV Bandpass, UG11	UNIVERSAL	Ø25.4 mm	1.9 to 3.1 mm	325 nm	In Stock	$102
FSR-U330-CColored Glass Filter, Coated, Ø25.4 mm, UV Bandpass, U330	UNIVERSAL	Ø25.4 mm	1.9 to 3.1 mm	330 nm	In Stock	$102
FSR-U340-CColored Glass Filter, Coated, Ø25.4 mm, UV Bandpass, U340	UNIVERSAL	Ø25.4 mm	1.9 to 3.1 mm	340 nm	In Stock	$92
FSR-UG1-CColored Glass Filter, Coated, Ø25.4 mm, UV Bandpass, UG1	UNIVERSAL	Ø25.4 mm	1.9 to 3.1 mm	355 nm	In Stock	$93
FSQ-UG5-CColored Glass Filter, Coated, 50.8x50.8 mm, UV Bandpass, UG5	UNIVERSAL	50.8 x 50.8 mm	1.9 to 3.1 mm	318 nm	In Stock	$182
FSQ-UG11-CColored Glass Filter, Coated, 50.8x50.8 mm, UV Bandpass, UG11	UNIVERSAL	50.8 x 50.8 mm	1.9 to 3.1 mm	325 nm	In Stock	$226
FSQ-U330-CColored Glass Filter, Coated, 50.8x50.8 mm, UV Bandpass, U330	UNIVERSAL	50.8 x 50.8 mm	1.9 to 3.1 mm	330 nm	In Stock	$213
FSQ-U340-CColored Glass Filter, Coated, 50.8x50.8 mm, UV Bandpass, U340	UNIVERSAL	50.8 x 50.8 mm	1.9 to 3.1 mm	340 nm	In Stock	$172

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Specifications

Type
Colored Glass Bandpass Filter
Material
Schott, Hoya or equivalent
Coating Type
SiO₂
Angle of Incidence
0°
Size Tolerance
±0.3 mm
Thickness
1.9 to 3.1 mm
Thickness Tolerance
±0.1 mm

Surface Quality
60-40 scratch-dig
Damage Threshold
30 W/cm² CW, Typical
Wedge
≤3 arc min
Clear Aperture
Central ≥ 80% of size
Chamfers
Up to 1 mm face width
Chamfers Angle Tolerance
45° ±15°
Edge Finish
Coated

Features

Optical Filter Mounts

We offer a wide variety of optical filter mounts for securing and locating your optical filter. Popular types include:

Coated Colored Glass Bandpass Filters

Coated for Better Humidity Resistance

Select color filters are made from hygroscopic material which, when exposed to a humid environment, will start to discolor. Our new colored glass filters are coated with SiO₂ film that protects the hygroscopic material from humidity and prevents staining. Humidity tests were conducted per MIL-C-48497 specifications. The film layer proved intact and optical performance of the filter remained the same after the test. In addition, the coated filters have a lower per surface reflectivity resulting in ~3% increase in transmission compared to the uncoated filters.