| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a solid-state imaging element and a camera system that can realize divided-pixel addition free from variation in the number of output electrons of a pixel with respect to the incident light amount and are allowed to have such a wide dynamic range that the sensitivity is high when the incident light amount is small and is lowered when the incident light amount is large and the output is not saturated. <P>SOLUTION: A solid-state imaging element includes a pixel unit 110 configured to include a plurality of pixels arranged in a matrix and a pixel signal readout unit 120, 150 configured to include an AD conversion unit that reads a pixel signal from the pixel unit, carries out analog-digital (AD) conversion of a pixel signal read out from the pixel unit. Each one of the pixels in the pixel unit includes a plurality of divided pixels arising from division into regions different from each other in a charge accumulation amount, the pixel signal readout unit reads out divided-pixel signals of the divided pixels in the pixel, the AD conversion unit carries out AD conversion of the divided-pixel signals that are read out, and adds the divided-pixel signals to each other to obtain a pixel signal of one pixel. <P>COPYRIGHT: (C)2010,JPO&INPIT |
