| 摘要 |
<p>The present invention concerns a portable optical reading device (1) for the optical acquisition of images or characters appearing on a document (2), comprising a grip support (3) by which it is held during an acquisition and an image acquisition system (4) incorporated into said support (3), characterised in that it further comprises two sources (5) emitting narrow non-divergent light beams, said sources (5) being disposed on the portable support (3) such that there is at least one point of intersection of said beams in the depth of field of the image acquisition system.</p> |
