Bandpass Filter, Colored Glass, 25.4 mm, UV Bandpass, UG11 Glass

Colored Glass Absorptive UV Bandpass Filters

The FSR-UG11 Colored Glass Bandpass Filter is a 25.4 mm diameter UV bandpass optical filter made of Schott UG11 filter glass. This bandpass filter is precision polished for demanding research or OEM applications.

Warning – this filter material is naturally hygroscopic. When exposed to a humid environment, they will start to discolor and stain. The stains cannot be wiped off and the damage is permanent. We offer the , a coated version of this filter for humid environments. It prevents moisture from contaminating filter material, preventing stains, discoloration, and contamination. It also has 3% increase of transmission compared to uncoated version.

Specifications

Technical Specs

Type
Colored Glass Bandpass Filter
Material
Schott UG11 or equivalent
Center Wavelength
325 nm
FWHM
110 nm
Angle of Incidence
0°
Size
Ø25.4 mm
Size Tolerance
±0.3 mm
Thickness
2.0 to 3.0 mm, typical
Surface Flatness
≤1λ at 632.8 nm over the clear aperture

Surface Quality
60-40 scratch-dig
Damage Threshold
30 W/cm² CW, Typical
Wedge
≤3 arc min
Clear Aperture
central ≥ 80% of diameter
Chamfers
Up to 1 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Type
Colored Glass Bandpass Filter
Material
Schott UG11 or equivalent
Center Wavelength
325 nm
FWHM
110 nm
Angle of Incidence
0°
Size
Ø25.4 mm
Size Tolerance
±0.3 mm
Thickness
2.0 to 3.0 mm, typical
Surface Flatness
≤1λ at 632.8 nm over the clear aperture

Surface Quality
60-40 scratch-dig
Damage Threshold
30 W/cm² CW, Typical
Wedge
≤3 arc min
Clear Aperture
central ≥ 80% of diameter
Chamfers
Up to 1 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Resources & Downloads

2D Product Drawings

FBR-NDXX-S(62 kB, PDF)

Other

FSR-UG11 RoHS Certificate(701.6 kB, PDF)

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