page_title: Porro prism
hierarchical_section_title: Porro prism
caption_attribution_description: Magyar: Visszatükrözés egyenlőszárú derékszögű prizmán. English: Retroreflection in prism. Deutsch: Retroreflexion im Prisma.
context_page_description: In optics, a Porro prism, named for its inventor Ignazio Porro, is a type of reflection prism used in optical instruments to alter the orientation of an image.
context_section_description: In optics, a Porro prism, named for its inventor Ignazio Porro, is a type of reflection prism used in optical instruments to alter the orientation of an image.
caption: Total internal reflection in Porro prism
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