K9 OPTICAL RIGHT-ANGLE PRISM ​ ​Precision isosceles right-angle prism made from K9 optical glass. The hypotenuse is aluminum-coated for efficient internal or external reflection in optical experiments, imaging systems, alignment setups and instrument assemblies. ​ ​Specifications ​• Material: K9 optical glass ​• Prism type: Isosceles right-angle prism ​• Hypotenuse coating: Aluminum, reflectance above 92% ​• Angular tolerance: +/- 6 arcmin ​• Surface quality: 60-40 ​• Surface flatness: 1/4 wave at 632.8 nm ​• Available equal-side sizes: 3, 5, 6, 8, 10, 15, 20, 25, 30, 40, 50, 60 and 80 mm ​• Extended options: a=b 30 mm with c=50, 100, 150 or 200 mm ​ ​Package includes ​1 x optical prism in protective packaging. ​ ​Please choose the required size before ordering. Handle only by the edges and keep optical surfaces clean.