Visible metal film neutral density filter

  • Neutral density filters (ND filters) are commonly used in imaging or laser applications to avoid damage to camera sensors or other optical components caused by strong light.
  • The ND filter will absorb or reflect the part of the light that is not transmitted, so as to uniformly reduce the transmittance in the spectrum of a certain part.
Technical parameters
Items Parameters
Material Optical grade float glass (B270)
Surface quality 40/20-60/40
Effective aperture 90%
Parallel error <30″
Diameter error +0.0/-0.1mm
Application wavelength range 400-1100nm
Transmitted wavefront error λ/4@633nm
Optical density error ±5%@550nm
Optical density (OD) 0.1- 3
spectral curve

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

For details, please consult:

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