Penta Prism

Penta prism can deviate an incident beam without inverting or reversing to 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.

Specifications
Material:	BK7 Grade A optical glass
Dimension Tolerance:	±0.2mm
90° Deviation Tolerance:	30"/10"/1'
Flatness:	λ/2(Standard), λ/4(High Precision)@633nm
Reflectivity:	R > 95% per face @400-700 nm
Surface Quality:	60-40 scratch and dig
Coating on input and output sides:	Uncoated