发明名称 |
EINRICHTUNG ZUM UEBERTRAGEN VON INFORMATION ZWISCHEN ZWEI IN BEZUG AUFEINANDER VERDREHBAREN BAUTEILEN |
摘要 |
Apparatus for transmitting an information signal from one to the other of two relatively rotatable members comprises one or a plurality of light sources radiating into a light guide having an output face which extends over a substantial arc of a circle around which are spaced a plurality of optical detectors. The arc of the circle subtended by the output face of the light guide is greater than the circumferential separation between adjacent optical detectors (assuming they are regularly spaced). Various modifications may be made to the light guide in order to attenuate or enhance the transmission or reflection characteristics, particularly at its surface, so as to obtain a uniform illumination along the whole of the arc of the output face thereof from illumination by one or more discrete light sources. |
申请公布号 |
DE2700407(A1) |
申请公布日期 |
1977.07.14 |
申请号 |
DE19772700407 |
申请日期 |
1977.01.07 |
申请人 |
THE RANK ORGANISATION LTD. |
发明人 |
RAYMOND COOPER,PETER |
分类号 |
H04B5/00;H04B10/00;(IPC1-7):08C17/00;41H7/02 |
主分类号 |
H04B5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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