Evaluation of the Seattle Photonics Light Shape Diffuser

Abstract

Under a Cooperative Research Development Agreement between Seattle Photonics (Seattle, Washington) and the U.S. Army Aeromedical Research Laboratory (Fort Rucker, Alabama), a novel product called the Seattle Photonics' Light Homogenizing Sheet (LHS) is evaluated for use as a backlight in helmet-mounted display designs. The LHS is designed to spread the light from a source uniformly over a well-defined area with high light efficiency. Seattle Photonics provided two demonstration units (DEMO 1 and DEMO 2). The Seattle Photonics LHS contained in both DEMO 1 and DEMO 2 produced greater illumination uniformity and light efficiency than did a comparable device representing current technology. In the evaluation, the LHS in both DEMO 1 and DEMO 2 produced approximately 1.7 to 1.9 times greater light efficiency than did the comparison device. The illumination from the LSD screen is best described as a Gaussian distribution and produces a more highly uniform light distribution.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2004
Accession Number
ADA428530

Entities

People

  • Clarence E. Rash
  • Howard H. Beasley
  • Maria E. Raatz
  • Thomas H. Harding

Organizations

  • United States Army Aeromedical Research Lab

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Cameras
  • Charge Coupled Devices
  • Demonstrations
  • Diffusers
  • Diffusion
  • Efficiency
  • Gaussian Distributions
  • Helmet Mounted Displays
  • Illumination
  • Images
  • Light Sources
  • Optics
  • Photographs
  • Photonics
  • Power Supplies
  • Standards
  • Test And Evaluation

Readers

  • Human-Computer Interaction (HCI).
  • Military Science
  • Research Science/Academic Research