| 摘要 |
An imager type reader (1) of optical information is described, comprising:
- an image forming device (3) including a sensor (4) including a one-dimensional or two-dimensional array of photosensitive elements (14), and defining an optical reception axis (Z), at least one reading distance (D, D 1 , D 2 ), and a region (16, 16 1 , 16 2 ) framed by the sensor (4) on a substrate (S, S 1 , S 2 ) at said at least one reading distance (D, D 1 , D 2 ),
- an illumination device (6) including an array (17) of adjacent light sources (18), defining an optical illumination axis (A),
- wherein each light source (18) is adapted to illuminate an area (22 m ) smaller than the size of said region (16, 16 1 , 16 2 ) framed by the sensor (4),
- the light sources (18) of the array (17) are micro-emitters, made with gallium nitride (GaN) technology,
- and the illumination axis (A) does not coincide with the reception axis (Z). |
