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.
References in periodicals archive ?
Contract awarded for Diamond Right-Angle Prism, 3 x 3 x 3 mm
Contrinex's new M18 photoelectric sensors include an integral right-angle prism to improve the reliability of conveyor control.
The inner (larger) figures are for use with a reversed image, such as you get with a right-angle prism.
Other products include: a light crystal, a right-angle prism, magnets, a compass, a puzzle, strategy games, Moire' Array-a set of films and cards, Reflecto-a mirrorized activity toy, and the new Flippers, which are colorful plastic pieces that retail for slightly more than $2.