| 摘要 |
PURPOSE: A sign board for laser projections is provided to prevent laser beams from being transmitted by attaching a filter on an display installation surface, thereby enhancing safety. CONSTITUTION: A sign board(100) for laser projections comprises a signal converting unit(10), an image modulation unit(20), a laser light source unit(30), a light coupling unit(140), a micro electro-mechanical system unit(50), and a lens assembly(60). The signal converting unit receives image signals from outside, thereby converting the same into digital signals. The image modulation unit modulates images by receiving the output of a signal converter. The laser light source unit receives the modulated image signals from the image modulation unit, thereby transmitting a laser light source. The electro-mechanical system unit receives the modulated image signals and the laser signals. The lens assembly receives signals generated in the electro-mechanical system unit, thereby projecting image signals to the outside. |
