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 ?
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. Whichever set of figures you use, always orient the Micro Guide so that the primary star is nearer to the zero p.a.
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.
This 6-inch reflector uses a small corrector lens and right-angle prism in place of the usual Newtonian diagonal mirror.
Berliner Glas's prism systems offer 20[micro]m optical path length difference or [lambda]/10 of wavefront accuracy, while Esco Optics' right-angle prisms, equilateral prisms and laser prisms have a surface quality better than laser grade, 10-5, or [lambda]/20.