ANVIS Objective Lens Depth of Field.

Abstract

Users of the AN/AVS-6 Aviator Night Vision Imaging System (ANVIS) need to know the minimum required distance for focusing the objective lenses to obtain infinity focus. With the increasing use of eye lanes to focus night vision devices, many users have the impression that 20 or 30 feet is 'optical infinity' for the eyes as well as the ANVIS. Depth of field of a night imaging device is especially important to infantry soldiers. If a soldier focuses at infinity, near objects will be out of focus and vice versa. This study describes the ANVIS depth of focus using photographic techniques and provides data on changes in resolution with different viewing and focused distances (i.e., resolution vs. different amounts of defocus).

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1996
Accession Number
ADA306571

Entities

People

  • William E. McLean

Organizations

  • United States Army Aeromedical Research Lab

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Biomedical
  • Human Systems
  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Army
  • Cameras
  • Computer Programs
  • Contrast
  • Data Analysis
  • Images
  • Infantry
  • Light Sources
  • Measurement
  • Night Vision
  • Night Vision Devices
  • Optics
  • Photographic Film
  • Photographs
  • Photography
  • Standards

Fields of Study

  • Physics

Readers

  • Circadian Sleep-Wake Regulation and Chronobiology
  • Image Processing and Computer Vision.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.