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FOREIGN PATENT DOCUMENTS
0471291A2 7/1991 European Pat. Off. .
Primary Examiner—John Shepperd
[57] ABSTRACT
Electrical power consumption is saved in a low-cost scanner for reading bar code symbols by oscillating a tall, narrow light collector, e.g., mirror, either by mechanical power along or by a low-power electrical drive. The collecting mirror has a width along the scan direction which is no more than about one-fifth its height, as considered along an orthogonal non-scan direction. A linear array of light emitting diodes is employed to illuminate the symbols.
26 Claims, 7 Drawing Sheets
