外50mm內8mm/OD=0.04-1/不含支架

可变中性密度滤波器通过围绕其中心旋转滤波器来提供光的连续可变的线性衰减。这是衰减光的经济解决方案。

Specifications

Material BK7

Dimension Tolerance +0.0/-0.2mm

Thickness Tolerance ±0.2mm

Flatness <2λ@632.8nm

Surface Quality 60/40 scratch and dig

Parallelism <3 arc minutes

Clear Aperture >90%

Design Wavelength 400-700nm

Coating Metallic reflective coating

Coating Area 0-270°

OD Tolerance ±5% of OD Extremes