发明授权
US4018504A Retro-reflective multiple-X optical scanning system 失效
反光多重X光扫描系统

Retro-reflective multiple-X optical scanning system
摘要:
Optical scanning apparatus for scanning and sensing information contained on a label-bearing article includes a light source, a rotatable member having a reflective surface, optical means for directing light from the source to the reflective surface and optical means for directing light reflected from the reflective surface to form a scanning pattern on a predetermined plane; the scanning pattern being comprised of a plurality of segments together forming at least one pair of overlapping X-shaped traces.
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