Bar code reader with polygon mirror having curved reflection surfaces

A bar code reader includes a polygon mirror being located opposite to a laser beam projecting unit with a surrounding reflection mirror set arranged between them. The polygon mirror includes a plurality of sides, each of which is a curved reflection surface, and is driven by a motor to rotate, so th...

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Bibliographic Details
Main Author LIAO JERRY
Format Patent
LanguageEnglish
Published 29.03.2007
Subjects
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Summary:A bar code reader includes a polygon mirror being located opposite to a laser beam projecting unit with a surrounding reflection mirror set arranged between them. The polygon mirror includes a plurality of sides, each of which is a curved reflection surface, and is driven by a motor to rotate, so that a laser beam projected from the projecting unit is reflected by the curved reflection surfaces of the polygon mirror and projected toward the surrounding reflection mirror set.
Bibliography:Application Number: US20050235223