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Home » Neutral Density Filter (ND Filter) » Circular Variable ND Filters: BK7 (375nm to 2000nm)
 


Circular Variable ND Filters: BK7 (375nm to 2000nm)


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Circular Variable ND Filters: BK7 (375nm to 2000nm)

The circular variable neutral density filter (ND Filter) wheel is a device to linearly attenuate light as the filter is rotated. The filter can be used for white light as well as for lasers. A large finite aperture can be attenuated by counter rotating two filters in series. Sizes are available from 25 mm to over 200 mm in diameter. The useable wavelength range is from 375nm to 2000nm.
  Product Number    Product Name  ThicknessSubstrate MaterialSurface QualityFlatnessParallelismOutside DiameterInside Diameter
R00500-10 CVND: ND = 0 TO 1 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 25mm
 7.5mm
R00500-20 CVND: ND = 0 TO 2 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 25mm
 7.5mm
R00500-30 CVND: ND = 0 TO 3 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 25mm
 7.5mm
R00500-40 CVND: ND = 0 TO 4 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 25mm
 7.5mm
R00500-50 CVND: ND = 0 TO 5 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 25mm
 7.5mm
R00510-10 CVND: ND = 0 TO 1 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 50mm
 7.5mm
R00510-20 CVND: ND = 0 TO 2 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 50mm
 7.5mm
R00510-30 CVND: ND = 0 TO 3 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 50mm
 7.5mm
R00510-40 CVND: ND = 0 TO 4 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 50mm
 7.5mm
R00510-50 CVND: ND = 0 TO 5 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 50mm
 7.5mm

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