pentaprism

(redirected from Roof pentaprism)
Related to Roof pentaprism: Single-lens reflex camera

pentaprism

(ˈpɛntəˌprɪzəm)
n
(General Physics) a five-sided prism that deviates light from any direction through an angle of 90°, typically used in single-lens reflex cameras between lens and viewfinder to present the image the right way round
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