System and method of coin selection

摘要

Coin selector system which comprises, at least:
(i) a first light sender element (1);
(ii) a second receiver element (2) of the light transmitted by the first sender element (1); and
(iii) means to process the signal;
all of which is done in such a way that there is no significant coupling between the sender element (1) and the receiver element (2) without the presence of a coin (10), while there will exist a coupling at the interposition of the coin (10) edge.