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US 6,550,927 B1Granted
Light guide for a communication unit
AssigneeNokia Mobile Phones Ltd.
InventorAtle Messel
Life of this patent
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AssigneeNokia Mobile Phones Ltd.
InventorAtle Messel
Estimating the term…
A communication unit including a light guide for illuminating a display including a substantially transparent plate-formed element with reception means for receiving light from light sources and for guiding the light into the transparent plate-formed element of the light guide. The reception means includes light in-coupling surfaces each facing towards a light source and being substantially parallel with a main surface of the light guide. The reception means includes a lens and a diffuser, for dispersing the light substantially parallel with the main surface of the light guide to illuminate the display. The light guide also has means for illuminating a keyboard. The means to illuminate the keyboard includes keyholes through the light guide, the keyholes having chamfered surfaces for reflecting the light in the light guide perpendicular to the surface of the light guide onto the keyboard. The light guide also incorporates a dome sheet having a reflector sheet attached to one side of the light guide and a keyboard flexibly attached to another side of the light guide.
A light guide for illuminating a display or a keyboard including a substantially transparent plate-formed element with reception means for receiving light from light sources and guiding the light into the transparent plate-formed element of the light guide, the reception means includes light in-coupling surfaces each facing towards a light source, the light in-coupling surfaces are substantially parallel with a main surface of the light guide, and means are provided for dispersing the light substantially parallel with the main surface of the light guide.
A light guide for illuminating a display or a keyboard, including a substantially transparent plate-formed element with reception means for receiving light from light sources and guiding the light into the transparent plate-formed element of the light guide;
A communication unit provided with a light guide for illuminating a display or a keyboard, including a substantially transparent plate-formed element with multiple reception means each receiving light from separate light sources, the reception means guiding the light into the transparent plateformed element of the light guide, the reception means includes light in-coupling surfaces facing towards respective light sources, the in-coupling surfaces are substantially parallel with the main surface of the light guide, the reception means further includes means for dispersing the light substantially parallel with a main surface of the light guide.
A communication unit provided with a light guide for illuminating a display or a keyboard, including a substantially transparent plate-formed element that includes multiple reception means for receiving light from separate light sources and for guiding the light into the transparent plate-formed element of the light guide, the light guide further includes keyhole openings through the light guide and a plastic dome sheet mounted on a back side of the light guide, said plastic dome sheet is provided with holes through, which the corresponding reception means having light in-coupling surfaces and means for dispersing the light substantially parallel with a main surface of the light guide, the keyholes have means for reflecting the light in the light guide perpendicular to a lower surface of the light guide, said plastic dome sheet is provided with a reflector sheet positioned on the plastic dome sheet adjacent the display.
Dependencies are inferred from the claim text.