Imaging device

Abstract

An imaging element comprising: an imaging unit that has: a plurality of groups each including at least one pixel; and a plurality of signal readout units that are each provided to each of the groups and read out a signal from the pixel; and a control unit that controls the signal readout unit in at least one group among the plurality of groups is provided. Each of the plurality of groups may include a plurality of the pixels. The control unit may select at least one group among the plurality of groups and control the signal readout unit by using a control parameter that is different from a control parameter that is used for another group among the plurality of groups.

What is claimed is: 
     
         1 . An imaging sensor comprising:
 a plurality of pixels;   a first output line connected directly to each of a plurality of first pixels arranged side-by-side in each of a row direction and a column direction, among the plurality of pixels, and to which a first signal from the plurality of first pixels is outputted;   a second output line connected directly to each of a plurality of second pixels arranged side-by-side in each of the row direction and the column direction, among the plurality of pixels, and to which a second signal from the plurality of second pixels is outputted, the second output line being different from the first output line;   a first current source that is connected to the first output line and includes a first circuit for supplying current to the first output line;   a second current source that is connected to the second output line and includes a second circuit for supplying current to the second output line, the second circuit being different from the first circuit;   a first computing circuit that computes a first evaluation value by using the first signal outputted to the first output line;   a second computing circuit that computes a second evaluation value by using the second signal outputted to the second output line; and a control unit that controls the plurality of first pixels based on the first evaluation value and that controls the plurality of second pixels based on the second evaluation value, wherein:   the plurality of pixels are arranged in a first semiconductor chip;   the first circuit, the second circuit, the first computing circuit, the second computing circuit, and the control unit are arranged in a second semiconductor chip that is connected to the first semiconductor chip;   the first semiconductor chip is stacked on the second semiconductor chip;   the plurality of first pixels are arranged in a first area of the first semiconductor chip;   the plurality of second pixels are arranged in a second area of the first semiconductor chip;   the first area and the first computing circuit are arranged such that the first area and the first computing circuit overlap with each other in a stacked direction of the first semiconductor chip and the second semiconductor chip; and   the second area and the second computing circuit are arranged such that the second area and the second computing circuit overlap with each other in the stacked direction.