Bandpass Filter, Colored Glass, 12.7 mm, Blue Bandpass, BG40 Glass

Colored Glass Blue Absorptive Bandpass Filters

The FR-BG40 Colored Glass Bandpass Filter is a 12.7 mm diameter blue bandpass optical filter made of Schott BG40 filter glass. These bandpass filters are precision polished for demanding research or OEM applications.

Specifications

Technical Specs

Type
Colored Glass Bandpass Filter
Material
Schott BG40 or equivalent
Center Wavelength
495 nm
FWHM
260 nm
Angle of Incidence
0°
Size
Ø12.7 mm
Size Tolerance
±0.3 mm
Thickness
3 mm
Thickness Tolerance
±0.1 mm
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 BG40 or equivalent
Center Wavelength
495 nm
FWHM
260 nm
Angle of Incidence
0°
Size
Ø12.7 mm
Size Tolerance
±0.3 mm
Thickness
3 mm
Thickness Tolerance
±0.1 mm
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

Other

FR-BG40 RoHS Certificate(263.2 kB, PDF)
FR-BG40_ROHS2-2021.pdf(279.4 kB, PDF)

2D Product Drawings

FR-BG Series 12.7 mm Diameter Drawing(100.6 kB, PDF)

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