| 摘要 |
An illumination device, comprising a light emitting diode ( 11 ) fixed on a circuit board ( 12 ). The illumination device furthermore has an optical element ( 10 ) disposed downstream of the light emitting diode ( 11 ) in a main emission direction ( 15 ), the optical element ( 10 ) being configured for directing a first portion ( 6 a) of the electromagnetic radiation ( 9 ) emitted by the light emitting diode ( 11 ) during operation through the circuit board ( 12 ) in a direction away from the circuit board ( 12 ).
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