Accession Number : AD0661829

Title :   LEGIBILITY OF VARIOUS SIZED LETTERS UNDER AVIATION RED, LUNAR, AND NEUTRALLY-FILTERED INCANDESCENT WHITE LIGHTING SYSTEMS.

Descriptive Note : Final rept.,

Corporate Author : NAVAL AIR DEVELOPMENT CENTER JOHNSVILLE PA AEROSPACE CREW EQUIPMENT DEPT

Personal Author(s) : Intano,Gabriel Patrick

Report Date : 17 OCT 1967

Pagination or Media Count : 41

Abstract : The legibility of various sized letters was evaluated under Aviation Red, 'Lunar', and Neutrally-Filtered Incandescent White lighting using a simulated instrument panel. Seven brightness levels were employed: 0.005, 0.01, 0.05, 0.10, 0.15, 0.19 FT-L, and the maximum brightnesses obtained at the rated voltage of the lamps. Legibility was significantly better under Aviation Red than either of the 'white' systems. There was no significant differences between the 'white' systems. Increases in performance were found above brightness levels previously reported. It is recommended that work be continued on legibility under various types of lighting using different test material. (Author)

Descriptors :   (*INSTRUMENT PANELS, LIGHTING EQUIPMENT), (*HUMAN FACTORS ENGINEERING, DISPLAY SYSTEMS), COCKPITS, PILOTS, VISUAL ACUITY, BRIGHTNESS, INCANDESCENT LAMPS, PERFORMANCE(HUMAN)

Subject Categories : Aircraft
      Air Condition, Heating, Lighting & Ventilating
      Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE