optical prism

/ˌɑptəkəl ˌprɪzəm/
IPA guide

Definitions of optical prism
  1. noun
    optical device having a triangular shape and made of glass or quartz; used to deviate a beam or invert an image
    synonyms: prism
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    types:
    erecting prism
    a right-angled optical prism used to turn an inverted image upright
    type of:
    optical device
    a device for producing or controlling light
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