專業Neutral Density Filters 廠商

Neutral density (by absorption) filters are designed to feature even and flat transmission over particular wavelength range and defined by optical density (OD). Overall optical attenuation is a sum of optical absorption in neutral density optical glass and Fresnel reflection losses. Neutral density optical filters densities adds up, if used in series.

Main features

• Optical density selection from 0,1 to 4
• ⌀25,4 mm standard diameter
• Excellent for low-power applications
• Custom dimensions, optical densities are available upon request

Application examples

• Overexposure prevention for cameras and other detectors