Light pick-up device

Details Light pick-up device Light pick-up device

1982-05-05

1984-09-25

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 75, 358901, 250227, 250228, H04N 1024

Patent

active

044738480

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.

REFERENCES:
patent: 1970312 (1934-08-01), Ives
patent: 3566119 (1971-02-01), Lewis
patent: 3581102 (1971-05-01), Nagao
patent: 3603730 (1971-09-01), Weigi et al.
patent: 3882270 (1975-05-01), Ogawa
patent: 4080634 (1978-03-01), Schrieber
patent: 4177487 (1979-12-01), Takenouchi et al.
patent: 4259948 (1981-04-01), Urban

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