Longpass Filter, Colored Glass, 50.8 x 50.8 mm, 850 nm Cut-on, RG850

The FSQ-RG850 Colored Glass Longpass Filter is a 50.8 x 50.8 mm 850 nm cut-on optical filter made of Schott RG850 glass. This long-wave pass edge filter is precision polished for demanding research or OEM applications.

Specifications

Technical Specs

Type
Colored Glass Longpass Filter
Optic Size
50.8 x 50.8 mm
Cut-on Wavelength
850 nm
Angle of Incidence
0°
Material
Schott RG850 or equivalent
Thickness Tolerance
±0.1 mm
Surface Flatness
≤2λ at 632.8 nm over the clear aperture
Thickness
2.0 to 3.0 mm, typical

Size Tolerance
±0.3 mm
Clear Aperture
central ≥ 80% of area
Chamfers
Up to 1 mm face width
Cleaning
See How to Clean Optics
Damage Threshold
30 W/cm² CW, Typical
Wedge
≤3 arc min
Chamfers Angle Tolerance
45° ±15°

Type
Colored Glass Longpass Filter
Optic Size
50.8 x 50.8 mm
Cut-on Wavelength
850 nm
Angle of Incidence
0°
Material
Schott RG850 or equivalent
Thickness Tolerance
±0.1 mm
Surface Flatness
≤2λ at 632.8 nm over the clear aperture
Thickness
2.0 to 3.0 mm, typical

Size Tolerance
±0.3 mm
Clear Aperture
central ≥ 80% of area
Chamfers
Up to 1 mm face width
Cleaning
See How to Clean Optics
Damage Threshold
30 W/cm² CW, Typical
Wedge
≤3 arc min
Chamfers Angle Tolerance
45° ±15°

Resources & Downloads

3D Product Models

2D Product Drawings

COLOREDG-S(61 kB, PDF)

Other

FSQ-RG850_ROHS2-2021_w_ex.pdf(280.9 kB, PDF)

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Compatible

Description	Compatibility
Cylindrical Lens Mount, Adjustable, 50.8 mm Max, +/- 5 Deg., 2 arcs sec	UNIVERSAL	Learn More
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Thick Optical Filter Holder, Thumbscrew Clamp, Up To 12 mm Thick	UNIVERSAL	Learn More

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