Accession Number : AD0631315
Title : GONIOPHOTOMETER TO MEASURE DIFFUSION CHARACTERISTICS OF REAR PROJECTION SCREENS.
Descriptive Note : Final rept., Dec 64-Oct 65,
Corporate Author : DAYTON UNIV OHIO RESEARCH INST
Personal Author(s) : Smith,Edgar A. ; Williams,Guy S. ; Mohlman,Henry T.
Report Date : DEC 1965
Pagination or Media Count : 28
Abstract : A goniophotometer was developed for use in measuring the diffusion characteristics of rear projection screen materials. Rear projection screens provide a wide range of possible diffusion characteristics. Similarly, different applications require different characteristics. The goniophotometer will facilitate the selection of screens most suitable for a particular application. Primary components of the device include a light tight chassis, a light source mounted on an arm which can be rotated plus or minus 60 degrees, a holder for screen specimens, a specifically designed photometer, and two interior ambient light panels and associated interior foot candle meters. Schematics, wiring diagrams, and drawings necessary for the fabrication of additional units are included. (Author)
Descriptors : (*PHOTOMETERS, MOTION PICTURE SCREENS), GONIOMETERS, DIFFUSION, TRAINING DEVICES, LIGHT, DISPLAY SYSTEMS
Subject Categories : Humanities and History
Distribution Statement : APPROVED FOR PUBLIC RELEASE