Illumination apparatus capable of illuminating different lighting patterns

An illumination apparatus, comprising:

• a transparent substrate, having a first region and a second region adjacent to each other;
• a electroluminescence structure, disposed on the transparent substrate, wherein the electroluminescence structure comprises:
• a first electrode, disposed in the first region;
• an optical adjusting layer, disposed in the second region;
• an organic electroluminescence layer, disposed above the first electrode and the optical adjusting layer, wherein the optical adjusting layer is disposed between the organic electroluminescence layer and the transparent substrate;
• and
• a common electrode, disposed above the organic electroluminescence layer;
• and
• an opposite substrate, wherein the electroluminescence structure is disposed between the transparent substrate and the opposite substrate,
• wherein a first portion of the electroluminescence structure includes the first electrode disposed in the first region, a first portion of the organic electroluminescence layer disposed in the first region and a first portion of the common electrode disposed in the first region, the first portion of the organic electroluminescence layer is disposed above the first electrode, and the first portion of the common electrode is disposed above the first portion of the organic electroluminescence layer;
• a second portion of the electroluminescence structure includes the optical adjusting layer disposed in the second region, a second portion of the organic electroluminescence layer disposed in the second region and a second portion of the common electrode disposed in the second region, the second portion of the organic electroluminescence layer is disposed above the optical adjusting layer, [[and]] the second portion of the common electrode is disposed above the second portion of the organic electroluminescence layer, and the first portion and the second portion of the organic electroluminescence layer emit a singular color light beam;
• a first light beam of the singular color light beam emitted from the first portion is dispersed in a wide angular range, and a second light beam of the singular color light beam emitted from the second portion is concentrated in a narrow angular range;
• wherein the optical adjusting layer is configured to drive the second portion of the organic electroluminescence layer disposed in the second region, and a reflectivity of the optical adjusting layer is greater than a reflectivity of the first electrode.