Accession Number : AD0787122

Title :   Analysis of Directional Drum Lens Performance,

Corporate Author : COAST GUARD BALTIMORE MD FIELD TESTING AND DEVELOPMENT CENTER

Personal Author(s) : Ciccolella,Joseph A.

Report Date : 16 JAN 1957

Pagination or Media Count : 31

Abstract : The performance of a Corning designed directional drum lens is analyzed in terms of the following photometric measurements and calculations: physical dimensions of each prism, peak beam candlepower of the illumination transmitted by each prism, azimuth in which the peak of the candlepower curve for each prism is directed, candlepower of each prism which is directed towards the hot spot of the lens, and calculated per cent of peak hot spot candlepower contributed by each prism. (Modified author abstract)

Descriptors :   *Navigational lights, *Lenses, Incandescent lamps, Illumination, Filaments

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE