An Investigation of Stereopsis with AN/AVS-6 Night Vision Goggles at Varying Levels of Illuminance and Contrast

Abstract

The increased reliance on night operations by the military over the last few decades has led to the development of various night imaging devices. Night vision goggles (NVGs) are one device which have gained widespread use in nighttime helicopter operations. However, rotorcraft accident data have indicated an increased occurrence of 'pilot error' type accidents when NVGs are in use. NVG related accidents often can be linked to extremely poor ambient lighting and contrast conditions during nighttime operations as well as the imaging limitations of the NvGs. Research has shown that NVGs reduce visual acuity and depth perception when compared to unaided daylight viewing conditions. In this study the effects of illumination and contrast on stereoscopic vision with and without AN/AVS-6 goggles were investigated. Stereoacuity was measured using a modified Howard-Dolman apparatus with four levels of illumination and three levels of contrast.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1993
Accession Number
ADA275332

Entities

People

  • Jeffrey J. Armentrout

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accidents
  • Air Force
  • Experimental Data
  • Light Sources
  • New York
  • Night Vision
  • Night Vision Devices
  • Optics
  • Perception
  • Psychology
  • Standards
  • Statistical Analysis
  • Systems Engineering
  • Test Methods
  • Theses
  • Visual Acuity
  • Visual Perception

Readers

  • Aviation Safety Risk Assessment.
  • Circadian Sleep-Wake Regulation and Chronobiology
  • Vision Science/Vision Psychology/Cognitive Neuroscience.