9376467

Clear aperture: >90
Wavelength, nm: 400-700
Dimensions tolerance, mm: +0/-0.2
Dimensions, mm: Ø20
Material: Neutral density glass
Mount: Unmounted
Optical density: 4
Surface quality, S-D: 60-40
Thickness, mm: 3
Transmitance, %: 0.01
Wedge / Parallelism error: <3 arcmin