| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical information reader capable of reading an optical pattern having a long horizontal width in the direction of reading column singly. SOLUTION: This optical information reader includes a light illumination means, a converging optical system 5, a two-dimensional electronic scanning type reading sensor 8, a signal binarization means, and a signal overlapping part cancelling means. The two-dimensional electronic scanning type reading sensor 8 includes, for example, a first light receive region 81 and a second light receive region 82, and the converging optical system 5 includes, for example, a first image formation lens 51 and a second image formation lens 52. When the optical pattern 3 is put across the maximum reading distance in the front so as to be long horizontally, reflected light fluxes originated in a first reflection region 3c1 and a second reflection region 3c2 in a linear reflection region 3c are photoelectrically converted in the first and second linear light receive regions 81 and 82, respectively. A signal overlapping part originated in overlapping parts in the first and second reflection regions 3c1 and 3c2 is cancelled by the signal overlapping part cancellation means. |
