| 摘要 |
The lamp (1) has a monoblock cylindrical optical ring (3) forming an optical system, where the ring is made of a plastic material i.e. polycarbonate material. The ring includes, at its lower part, a collecting surface for collecting light from LEDs. The ring has an outer side face (31) through which the light is directed outside of the ring towards outside of the lamp. A reflecting face is provided at an inner part of the ring for deflecting the light from the LEDs arriving by the collecting surface towards the outer side face. |
