Name: Neutral Density Filter
Brand: ECOPTIK(CHINA)LTD

Neutral Density Filter

Neutral optical density filter is often used in imaging or laser applications to avoid strong light damage to camera sensors or other optical components. This kind of optical density filters absorb or reflect untransmitted light to evenly reduce transmission in a given part of the spectrum.

Ecoptik China provides different types of neutral optical density filter wholesale. If you want to get the neutral optical density lens filters price, please feel free to contact us.

Uses Neutral Density Filter 

Descriptions of Neutral Density Filter

Ecoptik China makes fixed OD value neutral density filter by depositing Inconel film on a clear cubstrate. The advantage of the optical density filter is in the broader band and lower ripple than that of absorptive density filter. The coated wavelengthcan be extended to 200nm to 1100nm or more. The disadvantage is that there is some reflective light on the optical filter glass. The OD value can vary from 0.1 to 0.5. The OD value is controlled by coating inconel thin film thickness. Regular thickn thickness of the NDF is 1.1mm or 0.55mm.

This kind of optical density filters can be used for video, waterfalls, ophthalmology and landscape photography.

Specifications of Neutral Density Filter

Material	BK7
Diameter tolerance	+0.0/-0.1mm
Thickness tolerance	±0.1mm
Parallelism	<3 arc min
Flatness	λ~λ/10
Clear aperture	>90%
Density tolerance	±2%

Part No.	Wanvelength Range (nm)	Optical Density (OD) @550nm
ND01	400-1100	0.1
ND02	400-1100	0.2
ND03	400-1100	0.3
ND04	400-1100	0.4
ND05	400-1100	0.5
ND06	400-1100	0.6
ND07	400-1100	0.7
ND08	400-1100	0.8
ND09	400-1100	0.9
ND10	400-1100	1
ND20	400-1100	2
ND30	400-1100	3
ND40	400-1100	4
ND50	400-1100	5

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Neutral Density Filter

Descriptions of Neutral Density Filter

Specifications of Neutral Density Filter

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