Abstract: In a long field lighting fixture or lighting fixture with a linear lighting field, which is capable of forming a light screen or row of light fixtures that is reduced to its functionally critical parts, the lamp housing is composed of a single-piece reflector arrangement that is fashioned mirror-symmetrically with reference to a vertical middle lamp plane. This is composed of a thin-walled material whose surface is finely structured in a stiffening fashion by surface shaping at least in sub-areas. Facing away from its light exit opening, the reflector arrangement also comprises a pair of outwardly salient, mutually spaced legs, which are spaced apart by a cover surface, for the acceptance of electrical and/or mechanical lighting fixture component parts. Connector elements for a screen arrangement are formed either by end face parts or plates of the lighting fixture itself or by individual elements.