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Neutral Density Filter
Specifications
 
Material Absorptive Glass
Dimension Tolerance +0.0/-0.2mm
Thickness Tolerance ±0.2mm
Flatness 2λ@632.8nm
Surface Quality 80/50 scratch and dig
Parallelism <5 arc minutes
Clear Aperture >90%
OD Tolerance ±10%

 

Optical Density: OD

Transmission: T

OD=Log(1/T)

 
 
Standard Products Series
 
 

Part No.

Dimension(mm)

Standard OD

NDF25

ø25.0

0.1, 0.2, 0.3, 0.4, 0.5, 0.8, 1.0, 2.0, 3.0

NDF50

50.0x50.0

 

 

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