Longpass Filter, Colored Glass, 50.8 x 50.8 mm, 665 nm Cut-on, RG665 Glass

Colored Glass Absorptive Longpass Filters

The FSQ-RG665 Colored Glass Longpass Filter is a 50.8 x 50.8 mm 665 nm cut-on optical filter made of Schott RG665 filter 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
665 nm
Angle of Incidence
0°
Material
Schott RG665 or equivalent
Surface Quality
60-40 scratch-dig
Surface Flatness
≤4λ at 632.8 nm over the clear aperture
Thickness Tolerance
±0.1 mm
Thickness
2.0 to 3.0 mm, typical

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

Type
Colored Glass Longpass Filter
Optic Size
50.8 x 50.8 mm
Cut-on Wavelength
665 nm
Angle of Incidence
0°
Material
Schott RG665 or equivalent
Surface Quality
60-40 scratch-dig
Surface Flatness
≤4λ at 632.8 nm over the clear aperture
Thickness Tolerance
±0.1 mm
Thickness
2.0 to 3.0 mm, typical

Size Tolerance
±0.3 mm
Clear Aperture
central ≥ 80% of area
Wedge
≤3 arc min
Damage Threshold
30 W/cm² CW, Typical
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-RG665_ROHS2-2021_w_ex.pdf(279.7 kB, PDF)

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