An Efficient Projector Concept to Meet the Challenge of Signal Road Projection at Daytime

The projection of a reversing symbol or a turn indicator symbol onto the road has been demonstrated to increase the visibility of the signal to other road users, thereby potentially mitigating the occurrence of accidents. However, for the projected symbol to be clearly visible and effectively capture the attention of other road users, it must stand out against the background illumination with high contrast. This task is readily achievable during nighttime hours when ambient illumination is minimal. However, it becomes increasingly challenging during daytime hours when the surrounding natural light exceeds 10 000 lx. odelo has developed a highly efficient signal projector capable of generating a road projection with luminous intensity values reaching the legal maximum stipulated in proposed regulations. The turn indicator signal projected by the device has a luminous intensity of 2 500 lx o 3 000 lx, ensuring visibility even during daylight hours, particularly in overcast conditions or shaded areas on sunny days. The device's compact design allows for integration into headlamps or rear combination lamps. The system's high efficiency reduces power consumption to levels that enable passive cooling, a crucial requirement for integrating it into tail lamps.