Illumination device

An illumination device, comprising:

• at least one light source configured for emitting a primary light;
• a light conversion element including a front side, the light conversion element being configured for being illuminated using the primary light emitted by the at least one light source and for emitting a secondary light having a different wavelength on the front side;
• and
• an optical element, which is applied to the front side of the light conversion element such that a first optical interface is formed between the light conversion element and the optical element, such that the illumination device is configured for the secondary light being coupled from the light conversion element into the optical element at the first optical interface, the optical element including an outer surface which forms a second optical interface to a surrounding medium, the optical element being configured such that both the primary light and the secondary light pass through the optical element, wherein at least one of:
• (a) the outer surface includes at least one first surface area extending obliquely to the front side of the light conversion element, such that the illumination device is configured for the secondary light being decoupled at the second optical interface from the optical element into the surrounding medium in a direction which has a smaller angle in relation to a normal of the front side of the light conversion element than if the at least one first surface area were to extend parallel to the front side of the light conversion element;
• and
• (b) the outer surface includes at least one second surface area extending obliquely to the front side of the light conversion element, such that the illumination device is configured for the secondary light being reflected at the second optical interface into the optical element in a direction toward the normal of the front side of the light conversion element.