Signal receiver having light guide for guiding light...

Details Signal receiver having light guide for guiding light... Signal receiver having light guide for guiding light...

2007-07-31

2007-07-31

Sedighian, M. R. (Department: 2613)

Optical communications

Receiver

Including optical waveguide

C398S207000, C398S141000, C385S032000, C385S039000, C385S104000

Reexamination Certificate

active

10373108

ABSTRACT:
A signal receiver which receives an optical signal from a remote control includes a light guide for guiding a light passing through a front panel window toward a photodetector mounted on a circuit board. The light guide is made of a homogeneous material. A light guiding portion of the light guide extending from an entrance end to an exit end has a substantially circular cross section and is curved gently, not angularly. The exit end is configured to have a concave surface which is coaxial with the axes of both the cross section of the light guiding portion and a light-receptive portion of the photodetector. The exit end is disposed adjacent and opposite to the light-receptive portion.

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