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Circular Variable Neutral Density (ND) Filters

Mounted Circular Variable Neutral Density (ND) Filters

Mounted Circular Variable Neutral Density (ND) Filters Unmounted Circular Variable Neutral Density (ND) Filters
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  • Continuously Variable Over 270°
  • Spectrally Flat from 400-700nm
  • Mounted and Unmounted Versions Available

Common Specifications

Linearity (%):
±5
Thickness (mm):
1.52
Thickness Tolerance (mm):
±0.25
Parallelism (arcmin):
±3
Dimensional Tolerance (mm):
±0.10 ID, ±0.20 OD
Angle of Incidence (°):
0.00
Substrate:
Coating:
Variable
Surface Quality:
60-40
Blocking Wavelength Range (nm):
400 - 700
Optical Density Tolerance (%):
±5
Coating Specification:
Continuously Variable Inconel from 0 - 270°

Products

 Outer Diameter (mm)   Inner Diameter (mm)   Optical Density OD (Average)   Thickness (mm)   Mount   Compare   Stock Number   Price  Buy
25.4 7.5 0.04 - 1.0 1.52 Unmounted
25.4 7.5 0.04 - 2.0 1.52 Unmounted
25.4 7.5 0.04 - 3.0 1.52 Unmounted
25.4 7.5 0.04 - 4.0 1.52 Unmounted
100.0 25.4 0.04 - 1.0 1.52 Unmounted
100.0 25.4 0.04 - 2.0 1.52 Unmounted
100.0 25.4 0.04 - 3.0 1.52 Unmounted
100.0 25.4 0.04 - 4.0 1.52 Unmounted
50.0 7.5 0.04 - 1.0 1.52 Unmounted
50.0 7.5 0.04 - 2.0 1.52 Unmounted
50.0 7.5 0.04 - 3.0 1.52 Unmounted
50.0 7.5 0.04 - 4.0 1.52 Unmounted
50.0 7.5 0.04 - 1.0 1.52 Mounted
50.0 7.5 0.04 - 2.0 1.52 Mounted
50.0 7.5 0.04 - 3.0 1.52 Mounted
50.0 7.5 0.04 - 4.0 1.52 Mounted

Product Details

Circular Variable Neutral Density (ND) Filters are continuously variable over 270° of the filter. These 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. Circular Variable Neutral Density (ND) Filters, with a durable anodized aluminum mount, have an indicator arrow that accurately identifies the angular position of the filter for increased repeatability. The 50mm OD filters are available mounted or unmounted. The 360° rotating mount comes complete with a 4" Length, 0.5" Diameter stainless steel post. 

Technical Information

 
Optical Density
Unmounted
Mounted
  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

Accessories

Title CompareStock Number  Price Buy
Circular Variable Filter Mount Only, 50mm Diameter #54-570 S$307.40 Qty 11+ S$276.95   Request Quote
  • Contact Us
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50mm Diameter Substrate for Circular Variable Filter #47-376 S$88.45 Qty 11+ S$79.75   Request Quote
  • 3-5 days
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