| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the data symbol reader which can easily and securely align a data symbol in a symbol read area. SOLUTION: The data symbol reader 1 has a casing 2, in which a read part 3, a lighting means 4, etc., are installed. The lighting means 4 comprises a surface light source 7, an image forming lens 42 which images the light from the surface light source 7, a mirror 41, and a half-mirror 43 which reflects the illumination light so that the optical axis 70 of the illumination light (index light) is aligned with the optical axis 340 of an image pickup lens 34. This lighting means 4 forms an image of the surface light source 7, showing the external frame part and inside part of the symbol read area 8, on a read surface 9. For a read, the data symbol reader 1 is moved and operated so that the data symbol 10 is put in the symbol read area 8.</p> |
