Multicolor picture element with merged colors

Details Multicolor picture element with merged colors Multicolor picture element with merged colors

1988-06-27

1991-02-05

DeMeo, Palmer C.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Polarizer or special ray transmission

313116, 313318, 313493, 313634, 362242, 362246, H01J 516, H01J 6130, H01J 6140

Patent

active

049908219

ABSTRACT:
A plug-in lamp assembly for use as a picture element in large-screen information display systems. The lamp assembly includes red, green and blue discharge lamps for selectively generating different colors. Each discharge lamp has electrical leads extending from a first end and a light output region at a second end. The lamp assembly further includes a base having spaced-apart, plug-in electrical connectors, a cap covering the second ends of the lamps and a sleeve around the discharge lamps and interconnecting the cap and the base. The base provides mechanical support for the discharge lamps and permits easy replacement of the lamp assembly. The sleeve blocks light emitted from the sides of the discharge lamps. The cap includes a diffuser and a filter for altering the output spectrum of one or more of the discharge lamps. The diffuser can be mounted in a spaced relationship to the second ends of the discharge lamps at a distance therefrom selected such that the light from each different color lamp substantially fills the area of the diffuser. As a result, the light outputs from the discharge lamps are merged at the diffuser.

REFERENCES:
patent: 1963962 (1934-06-01), Barclay
patent: 3924227 (1975-12-01), Stolov
patent: 4300073 (1981-11-01), Skwirut et al.
patent: 4426602 (1984-01-01), Mollet et al.
patent: 4481442 (1984-11-01), Albrecht et al.
patent: 4559480 (1985-12-01), Nobs
patent: 4722028 (1988-01-01), Brannon et al.
patent: 4743799 (1988-05-01), Loy
patent: 4786841 (1988-11-01), Fohl et al.

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