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. == Description == It consists of a block of material shaped like a right geometric prism with right-angled triangular end faces.
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. == Description == It consists of a block of material shaped like a right geometric prism with right-angled triangular end faces.
Source: Wikipedia "Porro prism" · CC BY-SA 4.0
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