Optical system for facsimile scanners and the like
作者： Raymond Scott , Edmund F Priessnetz
DOI:
关键词: Coaxial 、 Lens (optics) 、 Facsimile 、 Aperture 、 Engineering 、 Optics
摘要: A simplified and effective optical system for facsimile scanners the like wherein a plurality of prefocussed lamps illuminate scanning spot coaxial lens directs reflected light through an aperture disposed in front photo-electric device producing electrical signal response to changes contrast spot.
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