| 摘要 |
PROBLEM TO BE SOLVED: To improve the reading work efficiency by irradiating with proper guiding light, in an optical information reader. SOLUTION: A guiding light irradiation part 40 is provided in a case 5 forming a reading window 5a. The part 40 is provided with a high luminance light emitting diode 41, a lens 42 and a hole board 43 and visible light emitted from the diode 41 is condensed by the lens 42 and passes through a hole 43a formed at the board 43 to be projected as guiding light to a scanning range formed by an optical reading part 8. At this time, the visible light as the guiding light emitted from the diode 41 in particular is provided with a wave length different from that of light for reading emitted from the laser diode 12 of the part 8 does not pass an optical filter 19 and entering a photodiode 20. Consequently, it is not required to turn off guiding light in a reading period and a scanning range is securely grasped at the time of reading. |
