Patent ID: 11877076
Assignee: FUJIFILM CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 19:
20. An imaging method comprising:
a step of causing a first polarizer to align a polarization direction of light transmitted through a first pupil region, a second pupil region, and a third pupil region of an imaging optical system, which has a pupil region including the first pupil region, the second pupil region different from the first pupil region, and the third pupil region different from the first pupil region and the second pupil region, with a first polarization direction;
a step of causing a wave plate to convert linearly polarized light aligned in the first polarization direction by the first polarizer into circularly or elliptically polarized light;
a step of causing a second polarizer to transmit light in a second polarization direction different from the first polarization direction in the light which has been transmitted through the first pupil region and has been converted into the circularly or elliptically polarized light;
a step of causing a third polarizer to transmit light in a third polarization direction different from the first polarization direction and the second polarization direction in the light which has been transmitted through the second pupil region and has been converted into the circularly or elliptically polarized light;
a step of causing a fourth polarizer to transmit light in a fourth polarization direction different from the first polarization direction, the second polarization direction, and the third polarization direction in the light which has been transmitted through the third pupil region and has been converted into the circularly or elliptically polarized light; and
a step of performing a crosstalk removal process on pixel signals of a first pixel, a second pixel, and a third pixel of an imaging element, which receives the light transmitted through the first pupil region, the second pupil region, and the third pupil region and has a plurality of pixel units each of which is a set of the first pixel, the second pixel, and the third pixel receiving light in different polarization directions, and generating a first image corresponding to the light transmitted through the first pupil region, a second image corresponding to the light transmitted through the second pupil region, and a third image corresponding to the light transmitted through the third pupil region on the basis of the pixel signals subjected to the crosstalk removal process.