Effect of Projection Visor Transmissivity and Reflectivity Level on Visual Acuity in Low Light Conditions.

摘要

The purpose of this study was to determine the effect of projection visor transmission and reflection properties on a pilot's ability to detect a visual target. Five visor configurations were used to analyze the effect of transmissivity. They were no visor, a visually coupled acquisition and targeting systems (VCATS) 50% visor, VCATS 35% visor, VCATS 25% uncoated visor, and a standard USAF 12% visor. Two visors were used to analyze the effect of reflectivity. They were a VCATS 25% uncoated visor and a VCATS 24% coated visor. Results showed there was a reduction in mean target detection range with a decrease in visor transmissivity except for the paring of no visor to the VCATS 50% visor and the VCATS 35% visor to the VCATS 25% uncoated visor. In these two comparisons no statistical significance was found in detection range. No statistical significance was found in the detection range for the visors used in the reflectivity analysis.