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Penta Prism Beamsplitters

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  • 50% Reflection / 50% Transmission
  • Beam Deviation Insensitive to Alignment
  • Designed for Visible Wavelengths

Penta Prism Beamsplitters are constructed by cementing a precision penta prism and a wedge prism together, and applying an appropriate interference coating to one of the traditionally reflective surfaces. Since slight movements of a penta prism do not affect the true right angle at which light rays are reflected, the deviation between the transmitted and reflected light rays is highly controllable and will not vary by more than 10arcsec.

Note: Outgoing beams are partially polarized.

Penta Prism Ray Path
Penta Prism Ray Path
Penta Prism Tunnel Diagram
Penta Prism Tunnel Diagram

Technical Information

 
Stock No. A B C D E
#66-632 12.70mm 12.70mm 5.26mm 13.75mm 12.70mm
#66-633 20.00mm 20.00mm 8.28mm 21.65mm 20.00mm
#66-634 25.40mm 25.40mm 10.52mm 27.49mm 25.40mm