Specification of our Rhombohedral prism as follow:
*Material BK7 Grade A optical glass
*Dimension Tolerance +/-0.2mm
*Beam Deviation Up to 30 arc seconds
*Angle Tolerance Up to 5 arc seconds
*Flatness Up to λ/4 @633nm
*Surface Quality 60/40 scratch and dig
*Chamfer 0.3mm+/-0.1mm
*Coating AR coating available
Rhombic Prisms are used to display a beam laterally without changing it is direction. They maybe coated to transmit part of the beam and produce two parallel and displaced emerging beams. Can be coated to produce a polarizing beam separator. Dimension and coating may be available by custom orders.