Luminance thresholds during dark adaption following preadaptation to cathode ray tube displays

Item

Title
Luminance thresholds during dark adaption following preadaptation to cathode ray tube displays
Date
1952
Index Abstract
Coming Soon
Photo Quality
Undetermined
Report Number
WADC TR 52-260
Creator
Herrick, R. M.
Diamond, A. L.
Kuhns, M. P.
Corporate Author
Columbia University
Extent
18
NTRL Accession Number
AD018118
Identifier
AD0018118
Access Rights
Unknown
Distribution Classification
1
DTIC Record Exists
Yes
Distribution Change Authority Correspondence
None
Abstract
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.
Report Availability
Not available via Contrails
Date Issued
1952-02
Index In
DTIC
Type
report