This guide explores ten real-life prism examples, from cereal boxes, books, tents and hexagonal pencils to precision optical prisms used in binoculars, cameras, periscopes and laser systems. It explains how rectangular, triangular and hexagonal prisms are identified, how prisms differ from pyramids, and how optical prisms redirect, fold, disperse or shape light. The article also compares everyday prism-shaped objects with precision components, introduces common prism types, and outlines the material, wavelength, coating, tolerance and inspection information needed when specifying a custom optical prism.
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