产 品 说 明                                                                                                                    

Specifications
Material:SF11 Grade A optical glass
Dimension Tolerance:+0.0, -0.2 mm
Clear Aperture:>80%
Flatness:λ /8 @633 nm
Theta:q = 29°27'±3"
Surface Quality:60-40 scrach and dig
Coating:MgF2 single layer on perpendicular surface