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100mm Diameter Unmounted 0.04-1.0 OD, Circular Variable Filter

Stock #43-767
Qty 1-10
Qty 11
Volume Pricing
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Angle of Incidence (°):
Inner Diameter (mm):
Optical Density OD:
0.04 - 1.0
Outer Diameter (mm):
Surface Quality:
Thickness (mm):
Thickness Tolerance (mm):
Neutral Density Filter
Blocking Wavelength Range (nm):
400 - 700
Parallelism (arcmin):
Dimensional Tolerance (mm):
±0.10 ID, ±0.20 OD
Linearity (%):
Coating Specification:
Continuously Variable Inconel from 0 - 270°

Regulatory Compliance

Reach 181:
RoHS 2015:

Product Family Description

  • Continuously Variable Over 270°
  • Spectrally Flat from 400-700nm
  • Mounted and Unmounted Versions Available

These neutral density filters are continuously variable over 270° of the filter. Circular variable filters provide linear attenuation of incident light by rotating the filter. Designed to be spectrally flat from 400 to 700nm, they provide excellent attenuation for spectrometers and other optical instruments. The 50mm OD filters are available mounted or unmounted. The durable anodized aluminum mount has an indicator arrow that accurately identifies the angular position of the filter for increased repeatability. The 360° rotating mount comes complete with 4" L, 0.5" Dia. stainless steel post.

Technical Information

Optical Density
  25.4mm Outer Diameter (OD)
7.5mm Inner Diameter (ID)
50.0mm Outer Diameter (OD)
7.5mm Inner Diameter (ID)
100.0mm Outer Diameter (OD)
25.4mm Inner Diameter (ID)
50.0mm Outer Diameter (OD)
7.5mm Inner Diameter (ID)
0.04-1.0 #43-759 #43-763 #43-767 #54-534
0.04-2.0 #43-760 #43-764 #43-768 #54-535
0.04-3.0 #43-761 #43-765 #43-769 #54-536
0.04-4.0 #43-762 #43-766 #43-770 #54-537

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