An image acquisition device comprising: a light source for outputting an irradiation light (L0); a spatial light modulator for modulating the irradiation light (L0); a control unit for controlling a modulating pattern to be presented on the spatial light modulator so that a plurality of light converging points (P1, P2) are formed in an observation object (B); a light converging optical system for converging the modulated irradiation light (L1) so that the plurality of light converging points (P1, P2) are formed in the observation object (B); a scanning unit for scanning positions of the plurality of light converging points (P1, P2) in the observation object (B) in a scanning direction intersecting an optical axis of the light converging optical system ; a photodetector for detecting a plurality of observation lights (L2) generated from the plurality of light converging points (P1, P2); and an image creating unit for creating an image of the observation object (B) using a detection signal from the photodetector , characterized in that the control unit is configured to set a center spacing (W) between adjacent light converging points (P1, P2) in the direction orthogonal to the optical axis direction on the basis of the positions of the plurality of light converging points (P1, P2) in a depth direction of the observation object (B), the control unit is configured to set each scanning area so that the scanning areas of adjacent light converging points partially overlap, and the control unit is configured to combine a plurality of image data while weighting overlapping portions of the scanning areas. a light source for outputting an irradiation light (L0); a spatial light modulator for modulating the irradiation light (L0); a control unit for controlling a modulating pattern to be presented on the spatial light modulator so that a plurality of light converging points (P1, P2) are formed in an observation object (B); a light converging optical system for converging the modulated irradiation light (L1) so that the plurality of light converging points (P1, P2) are formed in the observation object (B); a scanning unit for scanning positions of the plurality of light converging points (P1, P2) in the observation object (B) in a scanning direction intersecting an optical axis of the light converging optical system ; a photodetector for detecting a plurality of observation lights (L2) generated from the plurality of light converging points (P1, P2); and an image creating unit for creating an image of the observation object (B) using a detection signal from the photodetector , characterized in that the control unit is configured to set a center spacing (W) between adjacent light converging points (P1, P2) in the direction orthogonal to the optical axis direction on the basis of the positions of the plurality of light converging points (P1, P2) in a depth direction of the observation object (B), the control unit is configured to set each scanning area so that the scanning areas of adjacent light converging points partially overlap, and the control unit is configured to combine a plurality of image data while weighting overlapping portions of the scanning areas. <EOS>