Light guide structure and keypad having the same

Details Light guide structure and keypad having the same Light guide structure and keypad having the same

2006-11-17

2008-11-25

Sawhney, Hargobind S (Department: 2885)

Illumination

With control console

C200S314000, C362S030000

Reexamination Certificate

active

07455416

ABSTRACT:
A light guide structure installed in a keypad includes a light guide plate and a plurality of light emitting components. The light guide plate has a plurality of light guiding areas, each having a center light guiding circle with a plurality of light guide rings extended outward. The light guiding area and the adjacent light guiding area form light guide rings connected with an intersection, and the center light guiding circle and the light guide rings have a plurality of arc light guiding particles. The light emitting component is installed under the light guide plate and at the corresponding center position of the center light guiding circle. If the light emitting component is lit, light is projected onto the light guide plate and refracted by the light guiding particles to produce a light transmission effect for showing a number or a figure on the surface of the push button.

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