Illumination – Supported by vehicle structure – Condition responsive
Patent
1989-05-08
1991-02-05
Arnold, Bruce Y.
Illumination
Supported by vehicle structure
Condition responsive
350612, 350286, 362346, G02B 512
Patent
active
049899481
ABSTRACT:
The invention provides a reflective sheeting material having a structured reflective surface having a linear ray of isosceles prism reflecting elements, each element including a pair of reflective surfaces at an angle of about 120.degree. therebetween. The invention also provides a reflective sheeting material having a structured reflective surface comprising an array of reflecting elements, each comprising a polyhedron having three paralellogram faces. The invention also provides an apparatus such as a light pole for transporting light and reflecting the light in a broad, uniform pattern. The apparatus comprises (a) a columnar light conduit, for transporting light therealong, the conduit having a proximate end and a distal end; (b) a light source provided at the proximate end of the light conduit,and (c) a light distributing reflective member, such as the reflective sheeting material described above, comprising a multiplicity of repeating reflecting elements. The reflective member is positioned at the distal end of the light conduit so that the light exiting the distal end of the conduit is reflected in a broad, uniformly distributed pattern.
REFERENCES:
patent: 3671101 (1972-06-01), Finch
patent: 3806232 (1974-04-01), Gray
patent: 4260220 (1981-04-01), Whitehead
patent: 4360863 (1982-11-01), Barnes et al.
patent: 4468094 (1984-08-01), Inokuchi
patent: 4615579 (1986-10-01), Whitehead
patent: 4712867 (1987-12-01), Malek
patent: 4750798 (1988-01-01), Whitehead
patent: 4805984 (1989-02-01), Cobb, Jr.
Arnold Bruce Y.
Ben Loha
Kirn Walter N.
Little Douglas B.
Minnesota Mining and Manufacturing Company
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