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A pentaprism is a five-sided optical device with two reflecting surfaces that rotates a beam 90 degrees without altering the orientation of the image, as do two mirrors at 45 degrees.


The view is a 2D cross section from the side. You can shift or rotate the light source or the prism by dragging the red or blue dots, or by using the sliders.


Contributed by: Andrew Wesly, Ann Williamson and Donald Barnhart (Optica Software, a division of iCyt Mission Technology) (March 2011)
Open content licensed under CC BY-NC-SA



This Demonstration was created using Optica 3. See

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