An imaging device, comprising: an imaging element including: a photoelectric conversion member configured to generate charge due to an internal photoelectric effect when receiving light in a state where a voltage in a first predetermined range is applied, and to generate no charge due to the internal photoelectric effect when receiving light in a state where a voltage in a second predetermined range is applied; and a plurality of pixel circuits, each pixel circuit being configured to accumulate, in a corresponding one of a plurality of pixels, the charge generated by the photoelectric conversion member, the imaging element configured to output a frame image based on an amount of charge accumulated in the plurality of pixel circuits; a voltage controller configured to control a voltage to be applied to the photoelectric conversion member; and a corrector configured to perform correction on a frame image output from the imaging element to reduce dark current signal components, the voltage controller is further configured to perform the control in such a manner that, during an exposure period included in a predetermined frame cycle, the voltage in the first predetermined range is applied to the photoelectric conversion member, and during a light-shielding period other than the exposure period in the predetermined frame cycle, the voltage in the second predetermined range is applied to the photoelectric conversion member, the imaging element is further configured to output, every frame cycle, a signal frame image based on an amount of charge accumulated in the plurality of pixel circuits during the exposure period, and a light-shielding frame image based on an amount of charge accumulated in the plurality of pixel circuits during the light-shielding period, and the corrector is further configured to perform the correction on the signal frame image output from the imaging element by using the light-shielding frame image output from the imaging element, and characterized in that a ratio of the exposure period to the light-shielding period is n: 1, where n is an integer equal to or greater than 2, an added image generator configured to sequentially generate added light-shielding frame images by adding pixel values of corresponding pixels in a plurality of light-shielding frame images, using n successive light-shielding frame images output from the imaging element in a chronological order, the corrector is further configured to perform the correction by subtracting, from a pixel value of each pixel forming the signal frame image to be corrected, a pixel value of a corresponding pixel forming the added image generated by the added image generator using n successive light-shielding frame images including the light-shielding frame image output from the imaging element in a same frame cycle as the signal frame image. a photoelectric conversion member configured to generate charge due to an internal photoelectric effect when receiving light in a state where a voltage in a first predetermined range is applied, and to generate no charge due to the internal photoelectric effect when receiving light in a state where a voltage in a second predetermined range is applied; and a plurality of pixel circuits, each pixel circuit being configured to accumulate, in a corresponding one of a plurality of pixels, the charge generated by the photoelectric conversion member, the imaging element configured to output a frame image based on an amount of charge accumulated in the plurality of pixel circuits; a voltage controller configured to control a voltage to be applied to the photoelectric conversion member; and a corrector configured to perform correction on a frame image output from the imaging element to reduce dark current signal components, the voltage controller is further configured to perform the control in such a manner that, during an exposure period included in a predetermined frame cycle, the voltage in the first predetermined range is applied to the photoelectric conversion member, and during a light-shielding period other than the exposure period in the predetermined frame cycle, the voltage in the second predetermined range is applied to the photoelectric conversion member, the imaging element is further configured to output, every frame cycle, a signal frame image based on an amount of charge accumulated in the plurality of pixel circuits during the exposure period, and a light-shielding frame image based on an amount of charge accumulated in the plurality of pixel circuits during the light-shielding period, and the corrector is further configured to perform the correction on the signal frame image output from the imaging element by using the light-shielding frame image output from the imaging element, and characterized in that a ratio of the exposure period to the light-shielding period is n: 1, where n is an integer equal to or greater than 2, an added image generator configured to sequentially generate added light-shielding frame images by adding pixel values of corresponding pixels in a plurality of light-shielding frame images, using n successive light-shielding frame images output from the imaging element in a chronological order, the corrector is further configured to perform the correction by subtracting, from a pixel value of each pixel forming the signal frame image to be corrected, a pixel value of a corresponding pixel forming the added image generated by the added image generator using n successive light-shielding frame images including the light-shielding frame image output from the imaging element in a same frame cycle as the signal frame image.