Amici prism


Also found in: Wikipedia.

Amici prism

[ə′mēch·ē ‚priz·əm]
(optics)
A compound prism, used in direct-vision spectroscopes, that disperses a beam of light into a spectrum without causing the beam as a whole to undergo any net deviation; it is made up of alternate crown and flint glass components, refracting in opposite directions. Also known as direct-vision prism.
References in periodicals archive ?
Unless it has very large errors, a single Amici prism will not by itself introduce image rotation--a significant advantage over normal multiprism binocular designs.
The design I settled upon consists of a pair of small telescopes equipped with Amici prisms to provide a correct, non-inverted view.
Like most Amici prisms designed for use in telescopes, mine have rather restricted clear apertures of 21 mm--significantly smaller than the field stops in my chosen eyepieces.