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Netural Filters

25 Aug 2021

ND(Neutral Density) filters include absorptive and reflective filters,which are used in attenuating lasers and other optical signals. Absorptive filters minimize back reflections, which can be reduced further by adding an antireflection coating to the filter. Reflective filters are available with either a BK7 or UV Fused Silica substrate.

Specifications:
Materials: Colored Gray Glass
Diameter Tolerance: +/-0.20mm
Thickness: 0.5-3.0 mm
Parallelism<3 arc minute
Surface Quality: 60-40/80/50
Surface Figure: 2λ per 25mm 
Clear Aperture> 85%   
Optical Density Tolerance: +/-5% 
Coating: Specified by customers

              ND filter Chart:
  OD data Transmittance
ND2 0.3 50%
ND4 0.6 25%
ND8 0.9 12.50%
ND16 1.2 6.25%
ND32 1.5 3.12%
ND64 1.8 1.56%
ND128 2.1 0.78%
ND256 2.4 0.39%
ND500 2.7 0.20%
ND1000 3.0 0.10%
ND2000 3.3 0.01%
ND32000 4.5 0.00%
 
     

CONTACT DETAILS
Changchun Yutai Optics Co., Ltd.
NO.1688
changshen road
qiche zone
Changchun
Jilin
130000
China
Tel: 86-431-87911611
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