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Home » Neutral Density Filter (ND Filter) » Linear Variable ND Filters: BK-7 (375nm to 2000nm)
 


Linear Variable ND Filters: BK-7 (375nm to 2000nm)


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Linear Variable ND Filters: BK-7 (375nm to 2000nm)

The linear variable neutral density filter (ND Filter) is used to attenuate light as the filter is translated. The filters can be used with white light as well as with low power lasers. A large finite aperture can be attenuated by translating two filters in opposite directions. The filters are available in lengths from 5mm to over 200mm. These ND filters are more sensitive to position at lower density values than are linear transmission filters. The useable wavelength range is from 375nm to 2000nm.
  Product Number    Product Name  ThicknessSubstrate MaterialSurface QualityFlatnessParallelismLengthWidth
R00221-10 LINEAR VARIABLE ND FILTER: D= 0 to 1 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 50mm
 25mm
R00222-20 LINEAR VARIABLE ND FILTER: D= 0 to 2 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 50mm
 25mm
R00223-30 LINEAR VARIABLE ND FILTER: D= 0 to 3 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 50mm
 25mm
R00224-40 LINEAR VARIABLE ND FILTER: D= 0 to 4 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 50mm
 25mm
R00225-50 LINEAR VARIABLE ND FILTER: D= 0 to 5 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 50mm
 25mm
R00231-10 LINEAR VARIABLE ND FILTER: D= 0 to 1 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 75mm
 25mm
R00232-20 LINEAR VARIABLE ND FILTER: D= 0 to 2 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 75mm
 25mm
R00233-30 LINEAR VARIABLE ND FILTER: D= 0 to 3 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 75mm
 25mm
R00234-40 LINEAR VARIABLE ND FILTER: D= 0 to 4 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 75mm
 25mm
R00235-50 LINEAR VARIABLE ND FILTER: D= 0 to 5 2mm ±0.2mm
 BK-7
 80-50 Scratch & Dig
 < 2 Fringes / Inch @ 632.8nm
 < 3 Arc Minutes
 75mm
 25mm

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