| 摘要 |
The device has an LED (101) emitting light rays towards a diffusion module having an input zone (110) provided with an optical system to receive and collimate the rays. A central zone (120) is provided with another system (121). An output zone (130) is provided with a third system to receive and ensure diffusion, where the module is formed of a monoblock piece in a transparent material and the systems are composed of Fresnel lens. The third system has a trench (132) extending along a part of an output width, where the trench has input and output surfaces (133, 134) to form refracting surfaces. |
