| CPC H10F 39/8057 (2025.01) [H10F 39/18 (2025.01); H10F 39/809 (2025.01); H10F 39/811 (2025.01)] | 19 Claims |

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1. A solid-state image sensor, comprising:
a photodiode configured to photoelectrically convert incident light to generate a photocurrent;
a conversion circuit configured to convert the photocurrent into a voltage signal;
a luminance change detection circuit configured to detect a change in luminance of the incident light on a basis of the voltage signal; and
a light-shielding unit configured to shield incidence of light on an impurity diffusion region included in a circuit that inputs the voltage signal to the luminance change detection circuit.
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