FUNDAMENTAL LIMITATIONS IN THE LOW LIGHT-LEVEL PERFORMANCE OF DIRECT-VIEW IMAGE-INTENSIFIER SYSTEMS,

Abstract

To assess the improvement in visual perception of low light level events obtainable with a given image-intensifier system, one must take into account not only the prevailing photometric conditions in the field of view but also the non-ideal optical and electron-optical characteristics of the separate elements of the image-inatensifier system, and the eye. The effects of these factors on the overall perception characteristics of direct-view systems are examined, with particular reference to the limitations associated with objective lens parameters, photon-noise, contrast-transfer, image-tube photosensitivity, limiting resolution, luminance-gain and integration-time. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1969
Accession Number
AD0697511

Entities

People

  • E. A. Richards

Tags

DTIC Thesaurus Topics

  • Contrast
  • Detection
  • Electrons
  • Elementary Particles
  • Image Tubes
  • Low Light Levels
  • Luminance
  • Mental Processes
  • Perception
  • Photons
  • Photosensitivity
  • Psychological Phenomena And Processes
  • Subatomic Particles
  • Visual Perception

Fields of Study

  • Physics

Readers

  • Human-Computer Interaction (HCI).
  • Image Processing and Computer Vision.

Technology Areas

  • Microelectronics