To provide a close contact type sensor promoting a light utilizing efficiency, there is provided a close contact type sensor featured in that in a close contact type sensor having a sensor circuit portion and an irradiation window portion, a plurality of the irradiation windows are arranged and positions...http://www.google.de/patents/US7279673?utm_source=gb-gplus-sharePatent US7279673 - Sensor, scanner and portable information terminal each having liquid crystal display
