| 摘要 |
PROBLEM TO BE SOLVED: To provide the optical scanning device which can realize the miniaturization of the whole device, the weight saving and the low power consumption. SOLUTION: A moving part 14 is supported by an oscillating shaft 13 of a fixing part 12, and a light-emitting part 15 and a light receiving part 16 are disposed along an axis line of the oscillating shaft 13 on an upper surface of the moving part 14. The alternating current is supplied to a coil 20 provided in the moving part 14, the moving part 14 is made to oscillate in a prescribed period around the oscillating shaft 13 by the electromagnetic force which the coil 20 receives from a magnetic circuit consisting of a yoke 18 on the fixing part 12 and a permanent magnet 19. A laser beam L emitted from the light- emitting part 15 scans a bar code 4 and reads the bar code 4 in response to a reflected light L' by the light receiving part. By this configuration, the miniaturization of the device, the weight saving and the low power consumption are realized while preventing deterioration in receiving efficiency. |
