The fixture provides mainly direct downward illumination. The shade is lit up from within and creates a soft diffuse upwards light. Depending on the choice of optics, the downward lighting characteristics will vary. The optics types have been designed in different variations to provide differint asymmetrical distributions of light. The LED-upgrade kit (also referred to as LED Retrofit kit) allows you to replace the old electrical components with a complete modern new LED unit, while retaining the original fixture.