Porro prism

短语

普罗棱镜

词形变化

Porro prisms 复数 Porro prisms

释义与例句

n.
  1. 1.

    A reflection prism used in optical instruments to alter the orientation of an image. It consists of a block of glass shaped as a right geometric prism with right-angled triangular end faces.

词源

Named after its inventor, Ignazio Porro.

来源：wiktionary