Metallic ND Filter, UV Fused Silica, 50.8x50.8 mm, 0.6 OD at 632.8 nm

The FSQ-ND06 UV Fused Silica Metallic Neutral Density Filter is a 50.8 x 50.8 mm square UV fused silica metallic ND filter with an optical density of 0.6 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for lower power applications. The coating is deposited on one side of an ultra-pure UV grade fused silica substrate providing excellent transmission from the UV to near-infrared. All filters are permanently marked with the optical density.

Specifications

Technical Specs

Size
50.8 x 50.8 mm
Wavelength Range
350 - 2000 nm
Optical Density
0.6
Optical Density Tolerance
±4% @ 632.8 nm
Transmission
25.1% @ 632.8 nm
Angle of Incidence
0°
Material
UV grade fused silica or equivalent
Damage Threshold
30 W/cm² CW, typical; not recommended for pulsed laser use
Thickness
3.0 mm

Surface Flatness
≤2λ at 632.8 nm over the clear aperture
Surface Quality
60-40 scratch-dig
Clear Aperture
≥central 80% of dimensions
Wedge
≤3 arc min
Chamfers
0.25–0.76 mm face width
Chamfers Angle Tolerance
45° ±15°
Durability
MIL-C-48497A, adhesion, humidity, moderate abrasion, and solubility requirements
Cleaning
See How to Clean Optics

Size
50.8 x 50.8 mm
Wavelength Range
350 - 2000 nm
Optical Density
0.6
Optical Density Tolerance
±4% @ 632.8 nm
Transmission
25.1% @ 632.8 nm
Angle of Incidence
0°
Material
UV grade fused silica or equivalent
Damage Threshold
30 W/cm² CW, typical; not recommended for pulsed laser use
Thickness
3.0 mm

Surface Flatness
≤2λ at 632.8 nm over the clear aperture
Surface Quality
60-40 scratch-dig
Clear Aperture
≥central 80% of dimensions
Wedge
≤3 arc min
Chamfers
0.25–0.76 mm face width
Chamfers Angle Tolerance
45° ±15°
Durability
MIL-C-48497A, adhesion, humidity, moderate abrasion, and solubility requirements
Cleaning
See How to Clean Optics

Resources & Downloads

3D Product Models

2D Product Drawings

COLOREDG-S(61 kB, PDF)

Other

FSQ-ND06 RoHS Certificate(264.7 kB, PDF)
FSQ-ND06_ROHS2-2021.pdf(279.1 kB, PDF)

Related Products

Similar

Description	Compatibility
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Metallic ND Filter, UV Fused Silica, 25.4 mm, 0.6 OD at 632.8 nm	UNIVERSAL	Learn More
Neutral Density Filter, Absorptive, 50.8 x 50.8 mm, 0.6 OD at 546.1 nm	UNIVERSAL	Learn More
Neutral Density Filter, Absorptive, 25.4 mm, 0.6 OD at 546.1 nm	UNIVERSAL	Learn More

Compatible

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

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