Abstract: A lamp for use in connection with an object storage system and intended for being connected to a current supply, the lamp including a lamp housing with at least one light source and a reflector member being at least partially included in a longitudinal extension of the lamp housing, the extension including a light opening. The at least one light source and the reflector member being so disposed as to illuminate, through the light opening, the exposed back sides of objects when stored in the storage system. An external width and height of the lamp housing is proportioned corresponding to the dimensions of such objects as are intended for being stored in the object storage system. Thereby a separate, removable lamp of the insertion type is objected. An illumination system including at least two such lamps, an object storage system as combined with at least one such lamp, and the use of the lamp for illuminating an object storage system is disclosed, too.