| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical information reader for intuitively notifying a user of a state in or out of focus without impairing reading work efficiency. <P>SOLUTION: The optical information reader has a guide light module 4 irradiating guide light showing a readable region, estimates a focus state based on information obtained from a distance sensor 5 or the like, and irradiates guide light almost continuously while controlling the output of guide light according to the estimated focus state. <P>COPYRIGHT: (C)2007,JPO&INPIT |
