Light adaptation: night vision goggle effect on cockpit instrument reading time.
Aviat Space Environ Med
; 72(6): 529-33, 2001 Jun.
Article
en En
| MEDLINE
| ID: mdl-11396558
BACKGROUND: Light adaptation to the intensified image provided by a night vision device may handicap pilots who have set cockpit instrument luminance too low. METHODS: Under conditions simulating night flying, subjects adapted to an NVG image at 3 or 10 footlamberts (fL), then used a joystick to indicate the position of the horizon in an ADI illuminated by NVIS-compatible light at luminances 2 to 3.5 log units lower than the NVG image. RESULTS: Response times increased no more than a few tenths of a second when the decrease in luminance was only 2 log units. Greater decreases produced correspondingly longer delays in response, reaching as much as 5.5 s for subjects in their twenties and 8-15 s for older subjects. CONCLUSIONS: While a decrease of more than 2 log units is not likely to occur under most operational conditions, it is certainly possible, and pilots should be aware that significant risk can be incurred by setting cockpit instruments to luminance levels below 0.03 fL.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Lectura
/
Adaptación Ocular
/
Medicina Aeroespacial
/
Anteojos
/
Personal Militar
Tipo de estudio:
Clinical_trials
/
Etiology_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Adult
/
Humans
/
Middle aged
País/Región como asunto:
America do norte
Idioma:
En
Revista:
Aviat Space Environ Med
Año:
2001
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos