epidiascope

(redirected from overhead projector)
Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.

ep·i·di·a·scope

(ep'i-dī'ă-skōp),
A projector by which images are reflected by a mirror through a lens, or lenses, onto a screen, using reflected light for opaque objects and transmitted light for translucent or transparent ones.
Synonym(s): overhead projector
[epi- + G. dia, through, + skopeō, to view]

epidiascope

A projector used to project by reflection opaque pictures (such as the page of a book) onto a screen.
References in periodicals archive ?
The use of LCD panels will most probably increase, leading manufacturers to create another hybrid overhead projector combining both technologies.
Place the calculator on an overhead projector and the light shines through a window in the calculator's back, projecting the image from its eight-line by 16character LCD window.
Overhead projectors cost about pounds 1,500 each and are now a vital part of classroom teaching, yet it can take weeks to replace those that are stolen while waiting for an insurance payout.
Measured diagonally, displays average 10 inches, which are, in turn, enlarged by the overhead projector.
The overhead projector will be used by Tees Valley Wildlife Trust during talks and school visits.
Given that even a low-end document camera costs 10 times more than an overhead projector, it's not surprising that ELMO sold more than 30,000 overhead projectors last year and only about 17,000 document cameras.
The new DT100 projector can serve as both an overhead projector and a digital desktop projector.