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Optical Filters>Neutral Density Filter(NDF)

Application:
Imaging Systems,Measuring Instruments
Substrate:Color glass

Neutral Density Filter(NDF, absorptive type,glass)

Part No Thickness Trans% Tolerance Test Plot
NDFA-02 2mm 2.0% 0.5~3.0%
NDFA-05 2mm 5.0% 1.0~9.0%
NDFA-10 2mm 10.0% 6.0~15.0%
NDFA-25 2mm 25.0% 18.0~32.0%
NDFA-30 2mm 30.0% 23.0~37.0%
NDFA-50 2mm 50.0% 41.0~59.0%
NDFA-65 2mm 65.0% 58.0~72.0%
NDFA-70 2mm 70.0% 63.0~77.0%

Custom size available according to size and qty.

 
Neutral Density Filter reduces the brightness of an image without changing the color of the scene.  It allows all wavelengths to pass through equally.    OD=Log(1/T)
OD Trans% OD Trans%
0.10 79% 0.15 70%
0.20 63% 0.30 50%
0.40 40% 0.50 32%
0.60 25% 0.70 20%
0.90 12.5% 1.00 10%
1.30 5% 1.50 3.2%
2.00 1.0% 2.50 0.3%
3.00 0.1% 4.00 0.01%
5.00 0.001% 6.00 0.0001%
 
Neutral Density Filter(NDF, coating type,plastic)

Application:
Imaging Systems,Measuring Instruments
Substrate:
Plastic,0.1mm
Part No Thickness Trans% Test Plot
NDFP-07 0.1mm 7%
NDFP-12 0.1mm 12%
NDFP-23 0.1mm 23%
NDFP-30 0.1mm 30%
NDFP-50 0.1mm 50%
 
Variable Density Filter(VND)

variable density filter,

Circular Variable Density Filter(CVND)

optical attenuator,NDF filter

Linear Variable Density Filter(LVND)

Application:
Imaging Systems,Measuring Instruments
Substrate:
Soda-lime glass
Thickness:0.7,1.1,1.9mm
Surface Quality
S/D:20/10,40/20,60/40(typical),80/50

Spectral Data
waverange:400~700nm
Optical Density Tolerance:\5
Optical Density:OD0-OD4
Default effective aperture:>90

The main purpose of using neutral density filters is to reduce the amount of light that can pass through the lens. As a result, if a shutter speed is kept the same, after adding a neutral density filter, a larger aperture must be used to obtain the same exposure. Similarly, if an aperture is kept the same, after adding a neutral density filter, a slower shutter speed must be used to obtain the same exposure.

Circular Variable  Neutral Density Filter (CVND)
Part No Outside Dia (mm) Inside Dia (mm)  Optical Density Plot
CVND-10 23 6 0.04  to 1.0
         
         
Linear Variable  Neutral Density Filter (LVND)
Part No Optical Density Size(mm) Plot
LVND-10 0.04  to 1.0  

       

 

 

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