Contrails
The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Test and Evaluation of Electronic Image Generation and Projection Devices. Volume III - Evaluation of projection Screens

Report Number: AMRL TR 65-116 Vol. III
Author(s): John H. Harshbarger; James D. Basinger
Corporate Author: Systems Research Laboratories, Inc.; Aerospace Medical Research Laboratories
Laboratory: Aerospace Medical Research Laboratories
Date of Publication: 1965-12
Pages: 70
Contract: AF 33(615)-1889
Project: 6114
Task: 611405
AD Number: AD0630659

Abstract:
The report presents data from an evaluation of seven types of projection screen surfaces to determine which surface best meets the requirements of visual simulation for astronautical flight training. In order to evaluate the various screen surfaces in terms of their brightness and the angle through which incident light is reflected, methods of measurement were devised which compared each screen to a given reference surface. Two materials were tried as the reference surface, the traditional matte white surface of magnesium carbonate and a special type of white paint applied to masonite. The latter surface reflected the more uniform pattern of light, but proved difficult to duplicate due to the great care needed to apply the paint evenly. Thus the report recommends continued use of magnesium carbonate block as the standard reference for display screen measurements. The test data on the seven screen surfaces indicates a wide variation in display characteristics. Apparently the user must accept an appropriate compromise between brightness and viewing angle -- the more confined the viewing angle the brighter the display. It was also noted that flaws in the screen surface are particularly apparent in the more directive, brighter screen materials. It is thus essential that screens employing such materials be manufactured with extreme care.

Download this report

(PDF, 1.51 MB, 70 pages)

Other options for obtaining this report

Via the Defense Technical Information Center (DTIC):
A record for this report, and possibly a full-image download of the report, exists at DTIC

Via National Technical Information Service:
This report may have been digitized and made freely available for public download, or made publicly available for purchase by the National Technical Information Service through their online database, the National Technical Reports Library

Indications of Public Availability
No digitial image of an index entry indicating public availability is currently available
There has been no verification of an indication of public availability from an inside cover statement