| 摘要 |
<p>PCT No. PCT/GB95/02043 Sec. 371 Date May 20, 1997 Sec. 102(e) Date May 20, 1997 PCT Filed Aug. 30, 1995 PCT Pub. No. WO96/10809 PCT Pub. Date Apr. 11, 1996In a coin sensing station, coins pass edgewise along a passageway through a transparent block and interrupt three optical sensing beams that transverse the passageway at spaced locations. The beams are produced by light emitting diodes which direct light into the block where it is directed by reflection from inclined surfaces integrally molded into the block. By use of a beam splitting means, it is possible to direct the first and second sensing beams from a single source beam, across the passageway at different, spaced apart locations.</p> |
