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Porro Prism

Porro Prism is used to alter the orientation of an image through the use of reflection. Incoming light beam enters the face of the prism, reflected along the roof surface through total internal reflection twice before the light beam exits through the same surface parallel to the incoming light beam. An image traveling through a Porro prism is rotated by 180° but not inverted.

Simtrum provides a selection of substrates such as: BK7, UVFS