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