Accession Number:

ADA003920

Title:

Analysis of Optical Filters for Contrast Enhancement of LED Multi-Mode- Matrix Cockpit Displays.

Descriptive Note:

Research and development technical rept. Jun-Sep 74,

Corporate Author:

ARMY ELECTRONICS COMMAND FORT MONMOUTH NJ

Report Date:

1974-12-01

Pagination or Media Count:

21.0

Abstract:

An experimental analysis of a number of optical filters developed for contrast enhancement of LED displays was performed. These filters were designed to allow viewing of the displays in a 10,000 fc environment. A number of contrast formulas are described using these formulas a contrast of 61 at 10, 000 fc ambient light levels is desirable. It is shown that a contrast of 2.51 has been achieved at the stated ambient condition using a complex filter consisting of a circular polarizer, bandpass filter and anti-reflective coatings. Suggestions are given for further improving the contrast in order to achieve the desired result.

Subject Categories:

  • Electrooptical and Optoelectronic Devices
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE