UNIVERSITE DE LILLE;ECOLE CENTRALE DE LILLE;UNIVERSITE POLYTECHNIQUE HAUTS-DE-FRANCE;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE;YNCREA HAUTS DE FRANCE
Optical sensor (1), especially an artificial retina, comprising at least one photosensitive cell, each cell including:- an integration capacitor (Cm),- a read circuit (10) the operation of which depends on the charge on the integration capacitor (Cm),- at least one MOS transistor (3； 31； 32) operating subthreshold, and the drain-source current of which influences the charge on the integration capacitor (Cm),at least one photodiode (2； 21； 22) operating in photovoltaic mode and connected to the gate of this transistor, such that the drain-source current of the MOS transistor depends on the optical power received by the photodiode.本發明揭示一種光學感測器(1)，特別地一人造視網膜，其包括至少一個光敏電池，各電池包含：- 一積分電容器(Cm)，- 一讀取電路(10)，其之操作取決於該積分電容器(Cm)上之電荷，- 至少一個MOS電晶體(3；31；32)，其在亞臨限值操作，且其之汲極-源極電流影響該積分電容器(Cm)上之該電荷，- 至少一個光二極體(2；21；22)，其在光電壓模式操作，且經連接至此電晶體之閘極，使得該MOS電晶體之該汲極-源極電流取決於由該光二極體接收之光功率。
