Illumination device for use in daylight conditions

Details Illumination device for use in daylight conditions Illumination device for use in daylight conditions

2007-02-20

2007-02-20

O'Shea, Sandra (Department: 2875)

Illumination

Daylight lighting

Including selected wavelength modifier

C362S084000, C362S812000, C362S555000, C362S558000, C362S231000, C362S326000

Reexamination Certificate

active

11456136

ABSTRACT:
An illumination device for use in daylight conditions includes a light-diffusing member provided with one or more dyes and a light source extending along and positioned adjacent a light-receiving surface of the light-diffusing member, with the light source emitting light that is substantially unabsorbed by the dyes as it passes through the light-diffusing member. Accordingly, in daylight conditions, the dyes are activated by sunlight to emit light such that light perceived along a light-emitting surface of the light-diffusing member is a combination of light from said light source and light from the dyes, thus increasing the output of the illumination device in daylight conditions.

REFERENCES:
patent: 3027669 (1962-04-01), Hardesty
patent: 7011421 (2006-03-01), Hulse et al.
patent: 2005/0111236 (2005-05-01), Hulse
patent: 2005/0195603 (2005-09-01), Hulse
patent: 2006/0198119 (2006-09-01), Hulse

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