| 摘要 |
The arrangement has LED-crystal pieces (12, 14, 16), and two supply lines (20, 22) for the pieces, where the pieces are connected with a power supply unit by the lines. A crystal-support device (18) is provided for supporting the pieces, so that its limitation surfaces freely lies in proximity to the crystal areas emitting light. The pieces and the device are arranged in a transparent housing, where the housing is evacuated, filled with inert gas e.g. helium, and made from colorless glass or colorless plastic material. |
