The confocal optical inspection apparatus that acquires a confocal image of an object and inspects the object includes a light source that emits illumination light; a first opening member that divides the illumination light emitted from the light source into illumination light beams, the first opening member having openings; an imaging device that acquires an image according to the respective illumination light beams reflected by the object; and an information processor that acquires a corrected confocal image in which distortion of an optical transmission path of the confocal optical inspection apparatus is removed from a time delayed integration (TDI) image obtained by a TDI operation of the imaging device, using a pre-measured point spread function (PSF) indicating optical characteristics of the confocal optical inspection apparatus.
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