| 摘要 |
An image capturing device (2) of the imager type is described, comprising: - an image forming device (3) including a sensor (4) defining an optical reception axis (Z), at least one reading distance (D, D1, D2), and a region (16, 16-1, 162) framed by the sensor (4) on a substrate (S, Si, S2) at said at least one reading distance (D, D1, D2), - an illumination device (6) including an array (17) of adjacent light sources (18), defining an optical illumination axis (A), characterised: - in that the light sources (18) are individually drivable and each light source (18) is adapted to illuminate an area of a size much smaller than the size of said region (16, 16i, 162) framed by the sensor (4), - in that the illumination axis (A) does not coincide with the reception axis (Z), and - by comprising a driver (13) of the light sources (18) adapted to drive the light sources (18) so as to switch off at least the light sources (18) that illuminate outside of the boundary of the region (16, 16i, 162) framed by the sensor (4) on the substrate (S, S-i, S2) at said at least one reading distance (D, Di, D2). |
