Night Vision Goggles Objectives Lens Focusing Methodology

Abstract

Before performing an airborne mission that uses night vision goggles (NVGs), aircrew must properly set the NVG's various adjustments: interpupillary distance, tilt, eye relief, height, eyepiece and objective lens focus. Currently, aircrew use a Hoffman 20/20 test unit to pre-focus their NVG objective lenses at optical infinity before boarding their aircraft. They may also refocus their objective lenses while in the cockpit and during the course of the mission. This paper examines observers' abilities to resolve targets of different sizes, viewed through NVGs, as a function of different pre-focused distances corresponding to "focusing errors".

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2000
Accession Number
ADA430622

Entities

People

  • Alan Pinkus
  • H. L. Task

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Air Force Research Laboratories
  • Aircrafts
  • Bar Codes
  • Color Temperature
  • Computers
  • Contrast
  • Illumination
  • Images
  • Materials
  • Military Research
  • Night Vision
  • Observers
  • Orientation (Direction)
  • Sensitivity
  • Visual Acuity

Readers

  • Circadian Sleep-Wake Regulation and Chronobiology
  • Geodesy
  • Systems Analysis and Design