The Aoy lamp was born after the observation of the common table lamps, composed by a base, a vertical support and a diffusor. To avoid the light from falling mainly at the stem of the lamp, Castiglioni designs an “invisible” support, a transparent crystal cylinder (diameter 30cm, height 60cm) with a parabolic opening along the base profile to allow continuity between the internal space and support surface of the lamp, useful for cleaning the enclosed bottom of the base. At the top of the cylinder is set the diffuser, a truncated cone in opaline glass that supports a reflector made of satin-finish opaline glass. The latter holds the naked silver-dome bulb. The lighting fixture, having no metal components, offers direct, indirect and diffused light at the same time.