| 摘要 |
The reflector lighting fixture according to the invention radiates the light energy principally as far as exclusively in the useful range between an upper emission angle and a lower emission angle. By contrast with what is known, in the lighting fixture according to the invention the light energy radiated into the useful range is substantially increased by the component which has previously been directly emitted outside the useful range in what is known. Since the reflector lighting fixture according to the invention radiates no light or only very little in the range below the lower emission angle, troublesome reflections of the lamp body on a glossy visual task are not perceptible. The invention uses a light distribution plate known per se, which has been applied to date in such a way that although it has produced a non-glare range below an angle approximately comparable to the lower emission angle, the guidance of the light in specific privilege directions has been effected exclusively by means of the light distribution plate which has, consequently, also covered the entire light exit opening of the previously known lighting fixture. However, the invention uses the known light distribution plate only partially with a narrow basic form of a long rectangle (in the case of elongated tubular lamps) or with a basic form approximately having the shape of a circular disc with a relatively small diameter (in the case of essentially spherical lamps).
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