Flying spot scanner

Details Flying spot scanner Flying spot scanner

H - Electricity

04

N

350/19, 314/28,

H04N 1/04 (2006.01) H04N 3/08 (2006.01) H04N 5/76 (2006.01)

Patent

CA 1066931

ABSTRACT OF THE DISCLOSURE A flying spot scanning system is provided by utilizing reflected light from a multifaceted rotating polygon which is then directed to the scanned medium. A light source illuminates at least two contiguous facets of the polygon during each scanning cycle, to provide the desired sequence of spot scanning. To assure a uniform spot size at the scanned medium, an optical convolution of elements is selected in combination with the light source such that in adequate depth of focus at the medium is assured. In each scanning cycle, information is transmitted to the scanned medium by modulating the light from the light source in accordance with a video signal.

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