There are many types of optical prisms,such as wedge prisms,righe angle prism,rhombohedral prism,dispersing prism etc.each having a particular geometry to achieve the reflections necessary to perform a specific imaging task. Wedge prism is commonly used in laser system for eliminating the reflections from the second surface or for beam steering. Specification of our wedge prism as follow: *Material:BK7 or(JGS1 JGS2 JGS3) *Glass Qualityz:nd +/-0.001 to +/-0.0001 vd +/-0.8% to +/-0.1% *Dimension Tolerance:+/-0.20mm to +0.01/-0.01mm *Thickness Tolerance:+/-0.20mm to +/-0.005mm *Surface Quality:80-50 to 10-5 Scratch/Dig *Surface Flatness: at 632.8nm lambda to lambda /20 per 25mm *Clear Aperture:80% -- 100% *Angle Tolerance:3-5 minutes to 3 second *Chamfer:0.3+/-0.20mm *45degree *No Chamfer *Coating Optional