Illumination – Illuminated scale or dial – Edge illuminated modifier or light rod/pipe
Patent
1994-06-13
1995-05-09
Oberley, Alvin E.
Illumination
Illuminated scale or dial
Edge illuminated modifier or light rod/pipe
362 31, G01D 1128
Patent
active
054145988
ABSTRACT:
A light wedge (300) formed from light conducting material comprises a first surface (308) for receiving light rays from a light emitting source (515), the first surface (308) having a first axial length, and a second surface (310) substantially opposite the first surface (308) and having a second axial length. The light wedge (300) additionally comprises two side surfaces (315, 320) further bounding the light conducting material between the first surface (308) and the second surface (310) and a plurality of sidewalls (325, 330, 333) positioned about an axis substantially parallel to a line of symmetry between the two side surfaces (315, 320), the plurality of sidewalls (325, 330, 333) forming a cavity within the light conducting material, wherein the plurality of sidewalls (325, 330, 333) receives and distributes a first portion of the light rays through the light conducting material.
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Motorola Technical Publication, entitled "Low-Profile LCD Retainer/Mount and Lightpipe", by Roshitsh, published by Motorola, Inc., Oct. 1990.
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"Parts That Glow", by Blumenfeld et al., reprinted from Machine Design, Oct. 29, 1959.
Perez, Richard A., "Electronic Display Devices", published by TAB Professional and Reference Books, Blue Ridge Summit, Pa., 1988, pp. 270-295.
Gardner Kelly A.
Moore John H.
Motorola Inc.
Nguyen Chanh
Oberley Alvin E.
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