A PRELIMINARY STUDY OF A PROTECTIVE MASK LENS DESIGN TO REDUCE OCCLUSION OF VISUAL FIELD IN OPTICAL FIRE CONTROL INSTRUMENTS.

Abstract

This report describes a preliminary human factors engineering study to resolve the incompatibility between optical fire control instruments and the M17 Protective Mask. The visual field of the instruments is reduced when the mask is worn because the critical distance from the cornea to the instrument lens is shorter than the distance from the cornea to the mask lens. A proposed recessed lens for the M17 mask is described. Limited tests of the modified lens indicate that the design reduces occlusion of the visual field of optical fire control instruments, is compatible with the mask, is capable of field installation, and has a potential for providing lenses. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1965
Accession Number
AD0477237

Entities

People

  • Charles W. Houff

Organizations

  • Edgewood Chemical Biological Center

Tags

DTIC Thesaurus Topics

  • Biological Sciences
  • Biomedical Engineering
  • Biotechnology
  • Engineering
  • Human Factors Engineering
  • Human Systems Integration
  • Interdisciplinary Science
  • Masks
  • Protective Masks
  • Systems Engineering
  • Systems Science
  • Vascular System Injuries

Fields of Study

  • Physics

Readers

  • Human-Computer Interaction (HCI).
  • Systems Analysis and Design
  • Vision Science/Vision Psychology/Cognitive Neuroscience.