An electronic device according to various embodiments disclosed herein may include a lens assembly having a structure in which at least one meta-lens and a spacer member are stacked, and an image sensor assembly attached to one side of the lens assembly to receive light passing through the lens assembly and convert the light into an optical signal. The spacer member may be fixed to one side of the lens assembly between the image sensor assembly and the lens assembly such that a cavity is defined by an inner side surface of the spacer member, a bottom surface of the lens assembly, and a top surface of the image sensor assembly.