When the size of the chip decreases, it is possible to place more matrices on a same wafer and this makes the rice of each individual chip decrease. The price of CCDs is principally determined by the manufacturing cost of wafers of semiconductors. The decrease in optical format is linked to cost. However, it is good to know this fact in scientific applications including the use of image correlation or stereophotogrammetry. For professionals of video, this asymmetry does not come as a source of significant disruption of the image quality. Thus, the active surface of a pixel is rectangular with interline transfer systems. It means that the active width of the detector is half the width of the pixel. However, and in particular for interline transfer systems, approximately half of the pixel is dedicated to the vertical shielded transfer register. Table 1: CCD matrice size for standard formatsĪlthough each manufacturer provides a sensor and pixel size slightly different, the nominal sizes of 640 x 480 matrix are given in table 2.
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