Light pick-up device

Details Light pick-up device Light pick-up device

H - Electricity

04

N

350/16

H04N 1/04 (2006.01) H04N 1/028 (2006.01) H04N 1/029 (2006.01) H04N 1/48 (2006.01)

Patent

CA 1188788

ABSTRACT A light pick-up device for transparency and/or opaque scanning in either a drum or flat bed scanning device consists of a hollow body, which exhibits a light entry opening for the modulated light coming from the master. The inside surface of the hollow body, which is designed as a light pick-up surface for the opto-electronic conversion of the scanning light into an image signal, consists of a multitude of sub-surfaces, whose surface normals are oriented in the direction of the incoming scanning light. The sub-surfaces are the light surfaces of either opto- electronic transducers or are the end faces of optical fibers whose other end faces are coupled to an opto- electronic transducer. Because the disruptive influence of scratches and shadow edges in the master is suppressed, a high efficiency and a good uniformity of the scanning are achieved with the light pick-up device.

402412

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