Illumination apparatus for use in an illuminatable pushbutton ke

Details Illumination apparatus for use in an illuminatable pushbutton ke Illumination apparatus for use in an illuminatable pushbutton ke

1977-05-20

1978-11-07

Nelson, Peter A.

Illumination

Illuminated scale or dial

Edge illuminated modifier or light rod/pipe

362 24, 362 30, 362 32, G01D 1128

Patent

active

041248791

ABSTRACT:
An illumination apparatus which includes a plurality of indicating means arranged in rows, a light source, a light pipe assembly having a plurality of transparent light pipes disposed between the rows of indicating means, and means for distributing the light rays from the light source so that the indicating means are evenly and uniformly illuminated.

REFERENCES:
patent: 3137447 (1964-06-01), Dorman
patent: 3617727 (1971-11-01), Balfour-Lynn
patent: 3619591 (1971-11-01), Korski
patent: 3712724 (1973-01-01), Courtney-Pratt
patent: 3718814 (1973-02-01), Van Slyke
patent: 3774021 (1973-11-01), Johnson
patent: 3781537 (1973-12-01), Ramsey
patent: 3819928 (1974-06-01), Kuroyama et al.
patent: 3853088 (1974-12-01), Marko

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