尺寸公差................................................................+0.00, -0.05mm
定向................................................................ 0.1°
波前畸变..................................................................λ/10 @632.8nm
相位延迟..................................................................λ/2, λ/4,  

延迟.................................................................< λ/500
平行度....................................................................< 1 arc second
有效孔径...................................................................> 90%
光洁度.....................................................................20-10
崩边.......................................................................< 0.02mm