Longpass Filter, Colored Glass, 50.8 x 50.8 mm, 645 nm Cut-on, RG645 Glass

Colored Glass Absorptive Longpass Filters

The FSQ-RG645 Colored Glass Longpass Filter is a 50.8 x 50.8 mm 645 nm cut-on optical filter made of Schott RG645 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
645 nm
Angle of Incidence
0°
Material
Schott RG645 or equivalent
Thickness Tolerance
±0.1 mm
Surface Flatness
≤4λ at 632.8 nm over the clear aperture
Thickness
2.0 to 3.0 mm, typical
Surface Quality
60-40 scratch-dig

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
645 nm
Angle of Incidence
0°
Material
Schott RG645 or equivalent
Thickness Tolerance
±0.1 mm
Surface Flatness
≤4λ at 632.8 nm over the clear aperture
Thickness
2.0 to 3.0 mm, typical
Surface Quality
60-40 scratch-dig

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

2D Product Drawings

COLOREDG-S(61 kB, PDF)

Other

FSQ-RG645_ROHS2-2021_w_ex.pdf(280.1 kB, PDF)

Related Products

Compatible

	Compare	Description	Compatibility	Drawings, CAD & Specs	Avail.	Price
		FH-2SOptical Filter Holder, Drop-in, 50.8 mm Optics	UNIVERSAL		In Stock FREE 2-day shipping on thousands of products on Newport.com Learn More	$105

Need help?

Contact an Applications Specialist by sending us an email