Keypad having optical waveguides
作者： John M. Lutian , Kennard E. Nielsen , II R. Thomas Gibbons
DOI:
关键词:
摘要: A keypad includes a light emitting source, detector and waveguide assembly adapted to receive from the source having plurality of branches conduct detector. user actuated keys is provided. Each key moveable engaging member disposed proximate branch engage as function operation.
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