Illumination – Light source and modifier – Including selected wavelength modifier
Patent
1994-08-31
1996-07-30
Gromada, Denise L.
Illumination
Light source and modifier
Including selected wavelength modifier
362 801, 362328, 362336, 362309, 340472, B60Q 144
Patent
active
055418252
ABSTRACT:
A stoplight system that includes a light source for providing a light output, and an array of non-overlapping lenslets comprised of first lenslets and second lenslets, each first lenslet configured to refract a portion of the light output of the light source into a first predetermined angular field comprising a central angular region having vertical and horizontal extent, and each second lenslet configured to refract a portion of the light output of the light source into a second predetermined angular field comprising first and second peripheral angular regions that are horizontally on either side of the central angular region, whereby the portions of the light output of the light source that are refracted by the first and second lenslets form stoplight illumination.
REFERENCES:
patent: 3735124 (1973-05-01), Stahlhut
patent: 4652979 (1987-03-01), Arima
patent: 4703405 (1987-10-01), Lewin
patent: 4823246 (1989-04-01), Dilouya
patent: 4862330 (1989-08-01), Machida et al.
patent: 4991073 (1991-02-01), Levin
patent: 5050051 (1991-09-01), Machida et al.
Gunther John E.
Virgadamo Michael
Wreede John E.
Alkov Leonard A.
Denson-Low Wanda K.
Gromada Denise L.
Hughes Aircraft Company
Sember Thomas M.
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