Bandpass Filter, Colored Glass, 50.8 x 50.8 mm, UV Bandpass, UG5 Glass

Colored Glass Absorptive UV Bandpass Filters

The FSQ-UG5 Colored Glass Bandpass Filter is a 50.8 x 50.8 mm UV bandpass optical filter made of Schott UG5 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 UG5 or equivalent
Center Wavelength
318 nm
FWHM
175 nm
Angle of Incidence
0°
Size
50.8 x 50.8 mm
Size Tolerance
±0.3 mm
Thickness
2.0 to 3.0 mm, typical
Surface Flatness
≤2λ 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 area
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 UG5 or equivalent
Center Wavelength
318 nm
FWHM
175 nm
Angle of Incidence
0°
Size
50.8 x 50.8 mm
Size Tolerance
±0.3 mm
Thickness
2.0 to 3.0 mm, typical
Surface Flatness
≤2λ 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 area
Chamfers
Up to 1 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Resources & Downloads

Drawings And Cad

COLOREDG-S(61 kB, PDF)

Other

FSQ-UG5 RoHS Certificate(701.5 kB, PDF)

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Compatible

Description	Compatibility	Price
CYM-2RCylindrical Lens Mount, Adjustable, 50.8 mm Max, +/- 5 Deg., 2 arcs sec	UNIVERSAL	$211
FH-2SOptical Filter Holder, Drop-in, 50.8 mm Optics	UNIVERSAL	$103
M-PPL17Thick Optical Filter Holder, Thumbscrew Clamp, Up To 12 mm Thick	UNIVERSAL	$151