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Beamsplitter Penta Prisms

issue date:2016-3-31 15:35:44 visit frequency:2773

Beamsplitter Penta Prisms

Combine the function of a beamsplitter with the convenience of the penta prism for adjustment free 90 degree reflection. By adding a wedge and a partially reflective coating on the interface surface, the penta prism can be used as a beamsplitter.


N-BK7 grade A, fine annealed optical glass

Dimension Tolerance



λ/4 @ 632.8 nm

Surface Quality

40/20 scratches and dig

Clear Aperture


Beam Deflection

90,180 deg +/-10’’


50/50 +/-5%@450-650nm


Entrance and exit surfaces are MgF2 AR coated,

Surface S1 is BS coated, surface S2 is HR coated