Abstract: A spacer, including a spacer body, a light transmissive film, and a light absorbing film, is provided. The spacer body has an outer side surface, an inner inclined surface, an object side surface, and an image side surface. The object side surface faces an object side and connects the outer side surface with the inner inclined surface. The image side surface faces an image side and connects the outer side surface with the inner inclined surface. The inner inclined surface is located between an optical axis of the spacer and the outer side surface, and includes an inner edge adjacent to the optical axis and an outer edge away from the optical axis. The inner edge forms a light through hole. The light transmissive film and the light absorbing film are disposed on the inner inclined surface. All surfaces facing the optical axis are inclined relative to the optical axis.