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System for High Contrast Color Displays

IP.com Disclosure Number: IPCOM000069832D
Original Publication Date: 1978-Jun-01
Included in the Prior Art Database: 2005-Feb-21

Publishing Venue

IBM

Related People

Authors:
Young, JER [+details]

Abstract

With the availability of modern phosphors and color filters, it is now possible to design a system of white light illumination for a room which is compatible with high contrast on CRT color displays. The system requires the following: 1. The three color phosphors used in the CRT displays should be selected so as to produce three narrow spectral bands spaced over the visible spectrum. 2. The room in which the display screens are viewed is lit by light produced from fluorescent tubes with color lamp phosphors having emission bands lying between those of the CRT phosphors. 3. An optical filter which transmits the frequencies emitted by the display but absorbs those of the ambient light is fixed to the front of each CRT screen.