An imaging device comprising one or more pixels, each of the one or more pixels including a permittivity modulation element that includes a first terminal, a second terminal, and a permittivity modulation structure between the first terminal and the second terminal, a permittivity of the permittivity modulation structure being configured to change according to a radiation of light, a capacitive element that includes a first electrode and a second electrode, the second electrode being electrically connected to the second terminal of the permittivity modulation element, and a detection circuit that outputs a signal corresponding to a potential of the second terminal, the imaging device further comprising: a voltage supply circuit that applies a first voltage in a first period and a second voltage in a second period different from the first period to one of the first terminal of the permittivity modulation element and the first electrode of the capacitive element; and a signal processing circuit that generates a third signal, the third signal being a difference between a first signal output from the detection circuit in the first period and a second signal output from the detection circuit in the second period, wherein a potential difference between the first terminal and the first electrode when the second voltage is applied to the one is less than a potential difference between the first terminal and the first electrode when the first voltage is applied to the one. each of the one or more pixels including a permittivity modulation element that includes a first terminal, a second terminal, and a permittivity modulation structure between the first terminal and the second terminal, a permittivity of the permittivity modulation structure being configured to change according to a radiation of light, a capacitive element that includes a first electrode and a second electrode, the second electrode being electrically connected to the second terminal of the permittivity modulation element, and a detection circuit that outputs a signal corresponding to a potential of the second terminal, a permittivity modulation element that includes a first terminal, a second terminal, and a permittivity modulation structure between the first terminal and the second terminal, a permittivity of the permittivity modulation structure being configured to change according to a radiation of light, a capacitive element that includes a first electrode and a second electrode, the second electrode being electrically connected to the second terminal of the permittivity modulation element, and a detection circuit that outputs a signal corresponding to a potential of the second terminal, the imaging device further comprising: a voltage supply circuit that applies a first voltage in a first period and a second voltage in a second period different from the first period to one of the first terminal of the permittivity modulation element and the first electrode of the capacitive element; and a signal processing circuit that generates a third signal, the third signal being a difference between a first signal output from the detection circuit in the first period and a second signal output from the detection circuit in the second period, wherein a voltage supply circuit that applies a first voltage in a first period and a second voltage in a second period different from the first period to one of the first terminal of the permittivity modulation element and the first electrode of the capacitive element; and a signal processing circuit that generates a third signal, the third signal being a difference between a first signal output from the detection circuit in the first period and a second signal output from the detection circuit in the second period, wherein a potential difference between the first terminal and the first electrode when the second voltage is applied to the one is less than a potential difference between the first terminal and the first electrode when the first voltage is applied to the one.