Sorry, this product is no longer offered for sale. The recommended replacement product is 50G02AV.1.
Circular Variable Metallic ND Filter, UV Silica, 127 mm, 0.05-1.0 OD

The 50Q04AV.1 Circular Variable Metallic ND Filter is a circular variable metallic neutral density filter, made of UV Fused Silica. It is 127 mm in diameter with surface flatness of ≤λ/2 , and coated for an OD range of 0.05-1.0. Our circular variable neutral density filters are designed to simplify attenuation and beam splitting in the visible to NIR. The variable attenuation and beam splitting around a 270° circle is achieved by a thin, reflective aluminum film. A broadband, visible AR coating on the back side allows the filter to be left in the beam path at all times with minimal losses or ghost images.
Specifications
- SizeØ127.0 mm
- Optical Density0.05 - 1
- Optical Density Tolerance±0.15 over 270° @ 0° AOI
- MaterialUV Grade Fused Silica
- Damage Threshold75 W/cm2 CW, 10 mJ/cm2 with 10 nsec pulses at the specified wavelength, typical
- Size Tolerance+0/-0.25 mm
- Thickness9.53 mm
- Thickness Tolerance±0.38 mm
- Surface Flatness≤λ/2
- Surface Quality30-10 scratch-dig
- Clear ApertureFrom 33 mm to 101 mm diameter
- Chamfers0.50–1.52 mm face width
- Chamfers Angle Tolerance45° ±15°
- DurabilityMetalized area MIL-M-13508C, AR coated area MIL-C-675, moderate abrasion
- Inside Diameter25.4 mm
- Cleaning

Resources & Downloads
Other
50Q04AV.1_ROHS(389.9 kB, PDF)
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