Beamsplitter Penta Prisms

This penta beamsplitter assembly combines the transmitting/reflecting function of a beamsplitter with the 90° path bend associated with a penta prism (no inversion or reversion). This assembly is not only lighter than a solid prism assembly, but also an order of magnitude more accurate. The 2° wedge enables extreme angular accuracy often needed in laser applications. The clear aperture of 10x10mm makes it ideal for imaging systems. Comprised of BK7 sections coupled with UV adhesive, these assemblies uniformly react to temperature changes.


By adding a wedge and with partial reflective coating on surfaces S1, Penta Prism can be used as Beamsplitter. it is often used in Plumb Level, Serveying, Alignment, Ranbefinding and Optical Tollong. Transmission/reflection (T/R) ratio of 20/80, 50/50 or others for Beamsplitter Penta Prism is available upon request.