Accession Number : ADA019443

Title :   Map Illuminator Test, Phase I.

Descriptive Note : Final rept.,


Personal Author(s) : Tavernetti,Leonard R. ; Morkes,Leroy J. ; Orsinger,R. J.

Report Date : SEP 1975

Pagination or Media Count : 56

Abstract : The documant presents the results of an experiment conducted on the utility of four experimental devices for reading maps at night. The experimental devices employ white light at a low level together with a light control film and are intended for use in the field at night. The standard military flashlight with a red filter is used for control. Ten officers were dark-adapted, asked to read a variety of topographic line and photo maps, and timed on their ability to recover their night vision after using the devices. None of the devices permitted the user to read all the details of a map. The flashlight had significantly more effect on the night vision of the users than did the map illuminators. The experiment demonstrated that the mean error on map reading at night was over 40 percent and that Model D of the map illuminators was the best device tested for night map reading.

Descriptors :   *Lighting equipment, *Map reading, Low light levels, Night vision, Field tests, Flashlights, Optical filters, Dark adaptation, Field conditions, Field equipment, Illumination, Color vision

Subject Categories : Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE