Analysis of Optical Filters for Contrast Enhancement of LED Multi-Mode- Matrix Cockpit Displays.
Research and development technical rept. Jun-Sep 74,
ARMY ELECTRONICS COMMAND FORT MONMOUTH NJ
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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.
- Electrooptical and Optoelectronic Devices
- Test Facilities, Equipment and Methods