Circular/Ø25.4mm/OD=0.1

中密度滤波片用于衰减可见光，光密度和透过率之间的换算公式为：

光密度：OD

透过率（％）：T

OD = Lg（1 / T）

•光密度范围：0.1-3

•两种尺寸可供选择

•支持客制规格

Specifications

Material B270 Glass

Dimension Tolerance +0.0/-0.2mm

Thickness 2.0±0.2mm

Flatness 2λ@632.8nm

Surface Quality 80/50 scratch and dig

Parallelism <5 arc minutes

Clear Aperture >90%

Design Wavelength 400-700nm

Coating Metallic reflective coating

OD Tolerance ±10% of OD