Precision optical prism PTP series

BK7

Penta prism can deviate an incident beam without inverting or reversing 90°.The deviation angle of 90°is independent of any rotation of the prism about an axis parallel to the line of intersection of the two reflecting faces.It is commonly used in plumb level, surveying, alignment, range finding and optical tooling.The reflecting surfaces of this Prism must be coated with a metallic or dielectric coating.The standard Penta Prism reflecting surfaces are coated with aluminum or enhanced aluminum. Material BK7 Grade A Optical Glass Dimension Tolerance +/-0.2mm 90°Deviation Tolerance According to the Table Flatness λ/2(Standard λ/4(High Precision)@633nm) Reflectivity R>95% per Face @400-700nm Surface Quality 60/40 scratch/dig Coating on Input and Output Surface Uncoated