Absorption type neutral density filter

Ruicheng photoelectric absorption type neutral density filter adopts a precise process of processing and polishing neutral gray glass, with surface smoothness and parallelism reaching high-quality levels. Unlike reflective neutral density filters, absorptive neutral density filters use substrate materials with different parameters and achieve different light attenuation indicators by controlling the thickness. This type of filter has low surface reflection and a flat spectral response in the visible light range. It can be widely used in machine vision systems, spectral measurement, imaging optical systems, and low-power laser light output attenuation applications.


Material: Neutral gray glass
Wavefront error: wavelength/4 @ 633nm
Parallel difference:<1 point
Surface smoothness: Level 4
Dimensional error:+0/-0.2mm
Thickness tolerance:+-0.5mm
Application band: 400nm-700nm
Optical density error:+-5% @ 633nm

Kind reminder: If the surface needs to be coated with anti reflective film, please explain to the salesperson!