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ND Filter Set, Metallic, UV Fused Silica, 25.4 mm, Qty 8

The FR-ND UV Fused Silica Metallic Neutral Density Filter Set is a set of eight, 25.4 mm diameter, UV Fused Silica Metallic ND Filters. 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. Products included in this set are listed below. Please note this set has two FRQ-ND01.

Specifications

Technical Specs

Size
Ø25.4 mm
Wavelength Range
350-2000 nm
Optical Density
0.03, 0.1, 0.3, 0.5, 1.0, 2.0, 3.0
Angle of Incidence
0°
Material
UV Grade Fused Silica
Damage Threshold
30 W/cm² CW, typical; not recommended for pulsed laser use
Thickness
3.0 mm

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
Ø25.4 mm
Wavelength Range
350-2000 nm
Optical Density
0.03, 0.1, 0.3, 0.5, 1.0, 2.0, 3.0
Angle of Incidence
0°
Material
UV Grade Fused Silica
Damage Threshold
30 W/cm² CW, typical; not recommended for pulsed laser use
Thickness
3.0 mm

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

Other

FR-ND RoHS Certificate(263.7 kB, PDF)

Related Products

Products Included in This Set

Description	Compatibility
Metallic ND Filter, UV Fused Silica, 25.4 mm, 0.03 OD at 632.8 nm	UNIVERSAL	Learn More
Metallic ND Filter, UV Fused Silica, 25.4 mm, 0.1 OD at 632.8 nm	UNIVERSAL	Learn More
Metallic ND Filter, UV Fused Silica, 25.4 mm, 0.3 OD at 632.8 nm	UNIVERSAL	Learn More
Metallic ND Filter, UV Fused Silica, 25.4 mm, 0.5 OD at 632.8 nm	UNIVERSAL	Learn More
Metallic ND Filter, UV Fused Silica, 25.4 mm, 1.0 OD at 632.8 nm	UNIVERSAL	Learn More
Metallic ND Filter, UV Fused Silica, 25.4 mm, 2.0 OD at 632.8 nm	UNIVERSAL	Learn More
Metallic ND Filter, UV Fused Silica, 25.4 mm, 3.0 OD at 632.8 nm	UNIVERSAL	Learn More

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Compatible

Description	Compatibility
Optical Filter Mount, Stackable, 1.0 in. Diameter Optics	UNIVERSAL	Learn More
Optical Filter Holder, Drop-in, 25.4 mm Optics	UNIVERSAL	Learn More
Mirror Mount, ULTIMA<sup>®</sup>, Clear Edge, 1.0 in., 3 Locking Knobs	UNIVERSAL	Learn More

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