Abstract: In a solid-state imaging element that measures a distance, distance measurement accuracy is improved. The solid-state imaging element includes a photon number detection unit, a histogram generation unit, and a distance measurement unit. The photon number detection unit detects the number of photons incident on a pixel array unit over a predetermined number of times and outputs a detection result including the number of photons and a detection timing. The histogram generation unit generates, for each number of photons, a histogram indicating a detection frequency of the number of photons as a frequency for each detection timing, on the basis of the detection result. The distance measurement unit measures a distance to a predetermined object on the basis of the histogram generated.

Abstract: In a solid-state imaging element that measures a distance, miniaturization of pixels is facilitated. The solid-state imaging element includes a pixel array unit and a photon number detection unit. In the solid-state imaging element including the pixel array unit and the photon number detection unit, the pixel array unit is provided with a plurality of pixels that generates a predetermined analog signal depending on incidence of a photon and a signal line to which the plurality of pixels is connected in common. Furthermore, in the solid-state imaging element, the photon number detection unit detects the number of photons incident, on the basis of the analog signal transmitted via the signal line.