This invention relates to an image capturing apparatus for illuminating and capturing an image of an object using reflected light therefrom, and is objective to a miniaturized construction and simplified assembly. A plurality of light-emitting devices is mounted around an image sensor, and a light guide member guides the light of the light-emitting devices to an image capturing region for illumination. The image capturing apparatus having the closely disposed image capturing system and illumination system, the miniaturized image capturing apparatus is assembled by pressing a projection of the light guide member to the lower end of the hood for cutting outside lights from the image capturing range and by pressing the upper end of the hood to the filter. Thus, it becomes possible to assemble with less adhesion points and improve working ability of assemble of the image capturing apparatus to make defect ratios of productions low and improve production efficiency.