Lecteur Optique Laser Miroir Polygonal Code Barre 57
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Mechanical part of an old-generation barcode reader.
Polygonal metallic mirror (5 faces) transforming a rotation at constant speed into a scanning.
Date: Circa 1980
Light source: neon Helium laser.
Note the optical alignment by a reflector placed on a plane and oriented by 3 screws.
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