| 摘要 |
Switch including a support control organ in motion relative to a fixed device, the organ and the support being in such a relationship that a plurality of distinct relative positions produce differentiatable data producing different effects. One of the organ or the support includes at least one laser diode emitting a light beam and at least one photodetector, the other including a least one zone situated in the path of the laser beam and provided with computer-generated holograms forming elementary coding cells in order to perform spatial coding of the relative organ/support position. The beam sent by the laser diode is diffracted by the holograms in order to form a binary optical code which can be read by the photodetector and directly and instantaneously transformed into a binary electronic code.
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