Accession Number:

ADA214895

Title:

Attenuating the Luminous Output of the AN/PVS-5A Night Vision Goggles and Its Effects on Visual Acuity

Descriptive Note:

Final rept.

Corporate Author:

ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL

Report Date:

1989-09-01

Pagination or Media Count:

36.0

Abstract:

Aviators in combat may be subjected to a variety of noxious light stimuli. Filters and other eye protective devices may be used to counter these threats. At night, filters may be used in conjunction with image intensification devices e.g., night vision goggles to provide useful low-light vision as well as protection from deleterious light sources e.g., lasers, pyrotechnics, nuclear fireballs, etc.. Technologies may be combined in a single, integrated head gear unit. The present study was performed in order in consider the effects on visual acuity after reducing night vision goggle luminous output from 0-99 percent. A range of target contrasts and ambient illumination levels was investigated. ANPVS-5A goggles were selected based upon their compatibility with current phosphor display technology and their current ubiquity within aviation units. Visual acuity was assayed behaviorally because of its critical importance in flying performance. The results of the study provide normative acuity data with goggles alone and document the effects on goggle visual acuity with reduce goggle luminances as might be produced by protective materials placed between the goggles and the eyes. Keywords Light filters Human factors engineering Night vision devices.

Subject Categories:

  • Stress Physiology
  • Optics
  • Human Factors Engineering and Man Machine Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE