Neutral density filter

The neutral density filter can attenuate the light intensity by using the absorption or reflection characteristics of the material to the light. After passing through the neutral density filter, the light from the visible light region to the near-infrared light region attenuates in the same proportion at different wavelengths, so that the optical elements maintain approximately equal light energy transmittance in the wide band. Also known as neutral density filter, neutral filter, ND filter, attenuator, fixed density filter, etc.

Borisun Optics is a professional neutral density filter supplier, providing more than 17 kinds of transmittance, optical density from od0-od4, wavelength from near ultraviolet to far infrared neutral attenuators in different bands. For product inventory information, welcome to inquire.

1% filter
Technical parameters
Items Parameters
Product index customizable
Size range 10-100mm
Thickness 2 ± 0.1mm
Density tolerance ± 2%
Luminous aperture > 90%
Materials green plate glass, K9 glass, fused quartz
Attenuation band (1) UV (ultraviolet band): 250nm~380nm, attenuation 20%, 50%; (2) VIS (visible light band): 400nm~700nm attenuation: 99%, 90%, 80%, 70%, 50%, 30%, 20%, 10%; (3) Vis+NIR (visible band and near infrared band): 400nm~1000nm; (4) Optical communication band: 1200nm, 1310nm, 1550nm, transmittance after attenuation 70%, 20%, 50%, 1%, etc.
spectral curve

In addition, We can customize the optical filters according to customer requirements or drawings.

For details, please consult:

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