Light sensor system and a method for detecting ambient light

摘要

A light sensor assembly 10 and a method for detecting ambient light 100 which logarithmically amplifies a first signal which is representative of the certain amount of sensed light and a second offset signal and which adds the logarithmically amplified signals to a voltage signal, thereby allowing an accurate signal to be produced which indicative of the sensed amount of light by use of only a positive type electrical power supply and which is effective to allow the output signal to fall within the relatively narrow operating range of a cost effective digital to analogue converter.