100mm Diameter 0.04-4.0 OD, Circular ND Filter

Stock #54-082 3-4 days
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Diameter (mm):
Angle of Incidence (°):
Optical Density OD (Average):
0.04 - 4.0
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Inner Diameter (mm):
Thickness (mm):
Neutral Density Filter
Blocking Wavelength Range (nm):
400 - 700
Parallelism (arcmin):
Optical Density Tolerance (%):
Coating Specification:
Continuously Variable Inconel from 0 - 310°

Regulatory Compliance

Certificate of Conformance:

Product Family Description

  • Complete Package
  • Smooth Rotation
  • Stainless Steel Post is Included

Circular ND filters provide continuously variable, linear attenuation of incident light by rotating the filter about its center. The transmitted intensity is varied as a function of the optical density range. An inexpensive, ergonomic hub assembly holds the glass filter securely to the mount block. The Delrin® hub ensures a protective surface against the filter. A convenient ¼-20 tapped hole in the aluminum mount block permits a variety of mounting configurations. The filter is rotated manually by turning along the outside edge, front knob, or rear turning screw. A 4" long, 0.5" diameter stainless steel post is included.