Display lighting with matched narrow band filter and light sourc

Details Display lighting with matched narrow band filter and light sourc Display lighting with matched narrow band filter and light sourc

1995-09-25

1997-11-25

Lazarus, Ira S.

Illumination

Light source and modifier

Including selected wavelength modifier

362231, 34081541, 34081556, F21V 900

Patent

active

056904215

ABSTRACT:
A narrow band light source is combined with a narrow band filter on the face of a traffic light to reduce the problem of sun glare reflected from one traffic light, reducing intensity of the sunlight glare while light from the narrow band source passes through the filter essentially unattenuated, allowing system efficiency to remain high.

REFERENCES:
patent: 2403685 (1946-07-01), Sachtleben et al.
patent: 4214168 (1980-07-01), Kulka et al.
patent: 5448461 (1995-09-01), Fast et al.

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