An imaging apparatus includes: a lens unit in which a plurality of optical elements including one or more wafer-level lenses and a spacer are laminated an imaging element configured to receive light incident from the lens unit, perform photoelectric conversion on the light, and generate an image signal and a moisture-proof member that is bent and arranged so as to come in contact with at least a part of side surfaces of the lens unit to prevent moisture from entering a gap between the optical element and the spacer and/or a gap between the optical elements.
