Illumination – Plural light sources – Particular wavelength
Reexamination Certificate
2000-02-10
2001-06-05
O'Shea, Sandra (Department: 2875)
Illumination
Plural light sources
Particular wavelength
C362S333000
Reexamination Certificate
active
06241363
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of The Invention
The present invention relates to a colored light mixing device, particularly to a colored light mixing device having least one light source set with three light generating units, as selected, generating light rays of three colors, passing through a mixing plate from where light with uniform intensity and variable hue emanates.
2. Description of Related Art
Light sources and lamps have been in use for a long time. With the development of society, lamps have acquired functions besides simple lighting, e.g., decorating, advertising, warning, guiding and entertaining is Nowadays, in all places of daily life many types of light sources are found, like electric bulbs, fluorescent tubes and light emitting diodes, all used for the above-mentioned purposes.
Regular light bulbs and fluorescent tubes, however, emit only yellow or white light. To produce another color a colored shade has to be provided, again delivering light of a single color only. Varying gas fillings of the lamps allow for different colors, but a given lamp still emits only a single color. Mixing colors allows new colors generated, but conventionally there is no way to generate mixed colors of uniform hue and intensity.
SUMMARY OF THE INVENTION
It is therefore the object of the present invention to provide a device for mixing colored lights, generating light with uniform intensity and variable hue.
The present invention can be more fully understood by reference to the following description and accompanying drawings.
REFERENCES:
patent: 4542449 (1985-09-01), Whitehead
patent: 5097258 (1992-03-01), Iwaki
Dougherty & Troxell
O'Shea Sandra
Sawhney Hargobind S.
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