An imaging device is descried herein. The imaging device includes a first imaging structure and a second imaging structure that are respectively and sequentially stacked from bottom to top. The first imaging structure performs amplitude modulation on a light signal based on a first drive signal, and outputs amplitude-modulated light carrying pixel information of a first image and pixel information of a second image, and the first drive signal is determined based on light intensity of the first image and light intensity of the second image. The second imaging structure performs phase modulation on the amplitude-modulated light based on a second drive signal, where phase-modulated light is decomposed into light having two polarization components, which are used when forming the first image and the second image, and the second drive signal is determined based on the light intensity of the first image and the light intensity of the second image.