Equipment on automotive vehicle is controlled by a system including at least one semiconductor light sensor having variable sensitivity to light. Each light sensor generates a light signal indicative of the intensity of light incident on the light sensor. Control logic varies the sensitivity of the light...http://www.google.com.tw/patents/US7361875?utm_source=gb-gplus-share專利 US7361875 - Vehicle headlamp control utilizing a light sensor having at least two light transducers