参数Parameter

单位unit

数据data

直径公差Diameter
  Tolerance

mm

+0.0/-0.1mm

厚度公差Thickness Tolerance

mm

±0.1mm

焦距公差Focal Tolerance

mm

±1%

面型surface accuracy

λ/2

光洁度surface quality

40-20

偏心centration

<3'

有效孔径clear aperture

>90%

倒边bevelling

&lt;0.2×45°

镀膜coating

根据客户要求customers requirement

材料material

Bk7..石英玻璃fused silicon