| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical security system such that a key is hardly duplicated.SOLUTION: A transmission device of an optical security system includes a light emission part 11 and a first control unit 12. The light emission part 11 has a plurality of light sources 110 which each emit light having a predetermined spectrum, and emits light having a spectrum pattern composed of light beams from at least two of the light sources 110. The first control unit 12 controls lighting-on and lighting-out of the plurality of light sources 110 according to a predetermined key data so as to let the light emission part 1 emit light having a spectrum pattern corresponding to the key data. A reception part includes a light reception part which receives light from the transmission device, a storage part which stores waveform data on the spectrum pattern corresponding to the key data, and a second control unit which collates the spectrum pattern of the received light with the stored waveform data and cancels the security when they match each other. |
