LENS ASSEMBLY

A lens assembly is provided. The lens assembly includes a plurality of lenses disposed along an optical axis, a spacer disposed between a rearmost lens, disposed in a rearmost position in an optical axis direction, among the plurality of lenses, and a lens disposed adjacent to the rearmost lens, and a lens barrel in which the plurality of lenses and the spacer are accommodated. The rearmost lens is configured to be screw-fastened to the lens barrel. The lens, disposed adjacent to the rearmost lens, or the spacer is screw-fastened to the lens barrel. The lens barrel has a through-hole which passes through a side surface of the lens barrel. A side surface of a component that is screw-fastened to the lens barrel, among the lens disposed to be adjacent to the rearmost lens and the spacer, opposes the through-hole.