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Title
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Luminance thresholds during dark adaption following preadaptation to cathode ray tube displays
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Date
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1952
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Index Abstract
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Coming Soon
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Photo Quality
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Undetermined
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Report Number
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WADC TR 52-260
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Creator
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Herrick, R. M.
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Diamond, A. L.
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Kuhns, M. P.
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Corporate Author
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Columbia University
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Extent
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18
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NTRL Accession Number
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AD018118
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Identifier
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AD0018118
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Access Rights
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Unknown
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Distribution Classification
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1
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DTIC Record Exists
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Yes
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Distribution Change Authority Correspondence
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None
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Abstract
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The luminance thresholds were measured following preadaptation to CRT displays, which consisted of a vertical trace line moving horizontally across the screen at 1, 30, or 60 times/sec. The thresholds were determined during different stages of dark adaptation by the identification of the position of a luminous dial pointer. The initial thresholds were relatively low (-2.0 lg mL), and dark adaptation was complete in about 5 min. Viewing CRT displays resulted in a temporary detrimental effect upon the visual efficiency of aircraft personnel and there by impaired their ability to read instrument dials and perceive objects external to the aircraft.
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Report Availability
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Not available via Contrails
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Date Issued
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1952-02
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Index In
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DTIC
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Type
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report