| 摘要 |
<p>PROBLEM TO BE SOLVED: To attain miniaturization of a bar code reader. SOLUTION: In a bar code reader that reads a bar code 1 by having a laser diode 2 to radiate a laser light La and a light receiving element to receive its reflected light Lb, the light receiving element 3 is arranged along a irradiation direction of the laser light La radiated by the laser diode 2. Thus, since the laser diode 2 and the light receiving element 3 are in the most efficient arrangement for saving the space, miniaturization of the bar code reader can be attained.</p> |
