| 摘要 |
Photo-sensitive element ( 10 ) for electro-optical sensors, comprising at least a photodiode ( 11 ) able to generate a current that is function of the incident light, a conversion circuit ( 40 ) able to convert the current generated into a voltage signal, a comparator ( 12 ) able to commute if the voltage signal reaches or exceeds a determinate threshold signal ( 23 ), and at least a measuring and memorization element ( 15, 33 ) able to measure and memorize the temporal instant of commutation of the comparator ( 12 ) and able to be driven by a reference signal ( 27 ) in order to render available to an output line ( 29 ) a signal estimating the incident light. The reference signal ( 27 ) is of the type that can be programmed from outside.
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