| 摘要 |
An optical element for influencing light emitted by a plurality of LEDs, which has a light entrance region for entrance of the light, and a light exit region situated opposite the light entrance region and serving for exit of the light. An arrangement for light emission comprising such an optical element and the LEDs are also disclosed. An axis (A) running both through the light entrance region and through the light exit region is defined by the shape of the optical element; the light exit region is subdivided by a ring-shaped indentation into a central middle region and an edge region arranged around the middle region. The light entrance region and the light exit region are shaped in such a way that, as viewed in a direction along the axis (A), they have an n-fold rotational symmetry, wherein n is a natural number greater than 2. |
