Image acquisition device

Abstract

An image acquisition device includes a mask member that includes a mask pixel that changes a transmittance of some parallel waves from a subject on a plane intersecting with an incident direction of the parallel wave, a detector that includes a plurality of pixels that is arranged in a direction intersecting with the incident direction of the parallel wave and detects the parallel wave that has passed through the mask member, and an image processing device that reconstructs an image using compressed sensing based on data regarding a relative moving amount between the mask member and the subject and detection signals of the plurality of pixels input from the detector, in which a size of the mask pixel of the mask member on the plane is smaller than a size of the plurality of pixels along the plane.