IMAGE SENSOR OF THE TDI TYPE WITH SELF-ADAPTED DYNAMICS BASED ON IMAGE POINT

The invention relates to an image sensor of the TDI type comprising: a detection column of M photosensitive pixels (Pi), an image to be detected marching past the detection matrix so that a point (Iz) of the image to be detected is detected at successive time periods by the M pixels of the detection column, an addition column comprising M adders (Aj) and a transfer device adapted for adding, in the same adder (Aj) of said addition column, the electrical tensions corresponding to a same point (Iz) of the image to be detected, as said point is detected by the successive pixels of the detection column. The sensor is characterized in that the transfer device comprises a means for adjusting the dynamics of the sensor, point-by-point, adjusting, for each point (Iz) of the image to be detected, the number (Mj) of additions to be carried out according to the illumination of the point (Iz) and/or the threshold of the associated adder (Aj).