Importance

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Abstract

An illumination device includes a light source, a light conversion element with a front side, an optical element, and first and second optical interfaces, wherein (a) an outer surface of the optical element includes a first surface area extending obliquely to the front side, so that secondary light can be 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 the normal of the front side than if the first surface area extended in parallel to the front side of the light conversion element, and/or (b) the outer surface includes a second surface area extending obliquely to the front side of the light conversion element, so that secondary light can be reflected at the second optical interface into the optical element with total reflection in a direction toward the normal of the front side.

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First Claim