Bandpass Filter, Colored Glass, 50.8 x 50.8 mm, Blue Bandpass, BG18 Glass

Colored Glass Blue Absorptive Bandpass Filters

Colored Glass Blue Absorptive Bandpass Filters

Colored Glass Blue Absorptive Bandpass Filters

The FSQ-BG18 Colored Glass Bandpass Filter is a 50.8 x 50.8 mm square, blue bandpass optical filter made of Schott BG18 filter glass. These bandpass optical filters are precision polished for demanding research or OEM applications.

Specifications

Technical Specs

Type
Colored Glass Bandpass Filter
Material
Schott BG18 or equivalent
Center Wavelength
493 nm
FWHM
160 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
≤4λ 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 BG18 or equivalent
Center Wavelength
493 nm
FWHM
160 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
≤4λ 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

2D Product Drawings

COLOREDG-S(61 kB, PDF)

Other

FSQ-BG18 RoHS Certificate(702 kB, PDF)

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