| 摘要 |
<p>This invention concerns a procedure to measure the dimensions of a body (2) in movement, the procedure being performed by projection of an image of such body (2) onto a linear sensor (9) and by selection of rays parallel to an optical axis (10) by means of a telecentric filter (6), the rays being made parallel downstream of the telecentric filter (6) for projection onto the sensor (9). The invention concerns also an optoelectronic device which carries out such procedure and comprises a front lens (5), a telecentric filter (6) consisting of a stop, and a linear sensor (9), the device including also a rear lens (7) positioned downstream of the stop (6) and having a focus coinciding with the aperture of the stop (6).</p> |
