释义 |
right-angle prism right-angle prism[′rīt ¦aŋ·gəl ′priz·əm] (optics) A type of prism used to turn a beam of light through a right angle (90°); it will invert (turn upside-down) or will revert (turn right for left), according to the position of the prism, any light reflected by it. |