Right angle bending prisms work effectively by total intern alreflection.They are anti-reflection coated on the legs.Optionally,the hypoten use may be coated with second-surface aluminum protected by black sealing paint to ensure grazing incidence reflection.These prisms are suitable for optical delay lines and for high power use.

parameter:

Material: BK7,Fused silica
Dimension Tolerance: ±0.10mm
Surface Flatness: λ/8@633nm over clear aperture
Surface quality: 20/10
Angle Tolerance: ±10arc sec---±3arc min
Perpendicularity: ±2arc min
Clear Aperture: 90% of central circular dimension
Bevel: 0.3mmx45°