Metallic ND Filter, UV Fused Silica, 25.4 mm, 1.0 OD at 632.8 nm

The FRQ-ND10 UV Fused Silica Metallic Neutral Density Filter is a 25.4 mm diameter UV Fused Silica Metallic ND Filter with an optical density of 1.0 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
Ø25.4 mm
Wavelength Range
350 - 2000 nm
Optical Density
1
Optical Density Tolerance
±4% @ 632.8 nm
Transmission
10.0% @ 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
Size Tolerance
±0.25 mm

Thickness Tolerance
±0.25 mm
Surface Flatness
≤1λ 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
Ø25.4 mm
Wavelength Range
350 - 2000 nm
Optical Density
1
Optical Density Tolerance
±4% @ 632.8 nm
Transmission
10.0% @ 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
Size Tolerance
±0.25 mm

Thickness Tolerance
±0.25 mm
Surface Flatness
≤1λ 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

FBR-NDXX-S(62 kB, PDF)

Other

FRQ-ND10 RoHS Certificate(265.3 kB, PDF)
FRQ-ND10_ROHS2-2021.pdf(281 kB, PDF)

Related Products

Frequently Purchased Together

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, 0.2 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, 1.5 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
Metallic ND Filter, UV Fused Silica, 25.4 mm, 4.0 OD at 632.8 nm	UNIVERSAL	Learn More

Similar

Description	Compatibility
Neutral Density Filter, 1.0 Optical Density, 1.0 in. Diameter	UNIVERSAL	Learn More
ND Filter, Metallic, Optical Crown Glass, 25.4 mm, 1.0 OD at 632.8 nm	UNIVERSAL	Learn More
ND Filter, Metallic, Optical Crown Glass, 50.8 x 50.8 mm, 1.0 OD	UNIVERSAL	Learn More
Metallic ND Filter, UV Fused Silica, 50.8x50.8 mm, 1.0 OD at 632.8 nm	UNIVERSAL	Learn More
Neutral Density Filter, Absorptive, 50.8 x 50.8 mm, 1.0 OD at 546.1 nm	UNIVERSAL	Learn More

Compatible

	Compare	Description	Compatibility	Drawings, CAD & Specs	Avail.	Price
		Optical Filter Mount, Stackable, 1.0 in. Diameter Optics	UNIVERSAL				Learn More
		Optical Filter Holder, Drop-in, 25.4 mm Optics	UNIVERSAL				Learn More

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