Accession Number : ADD006507
Title : Graphic Aid for Projectors.
Descriptive Note : Patent Application,
Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC
Personal Author(s) : Heisler,James M
Report Date : 20 Jun 1979
Pagination or Media Count : 8
Abstract : During the projection of visual material on a screen by an overhead projector it is frequently desirable to index, indicate or designate material referred to by a commentator. A graphic aid visually emphasizing information being projected from a transparency onto a screen by means of an overhead projector is provided herein. The graphic aid is in the form of a strip of a transparent material whose light transmission properties differ from those of the transparency.
Descriptors : *Patent applications, *Image projectors, *Indicators, Visual aids, Transparence, Light transmission
Subject Categories : Printing and Graphic Arts
Distribution Statement : APPROVED FOR PUBLIC RELEASE