DESIGN AND OPTIMIZATION OF A HIGH-EFFICIENCY GROUND PROJECTION SYSTEM FOR AUTOMOTIVE APPLICATIONS

Abstract

This study presents the design and evaluation of a highefficiency ground projection system for automotive applications. The system projects a magnified image, such as a logo or safety symbol onto the ground when the vehicle door is opened, enhancing both aesthetic appeal and functional safety. It comprises a high-power OSRAM CP7P 1W LED, an aspheric condenser lens, an aspheric imaging lens, and a logo pattern plate. The optical design was simulated using ZEMAX and TracePro, while SolidWorks supported mechanical integration. A 100× image magnification was achieved with a measured deviation of less than 2%, confirming the system’s accuracy. Experimental tests conducted in a controlled darkroom environment showed a luminous efficiency of approximately 85% and an average illuminance of 250 lux at a 1-meter projection distance, closely matching simulation predictions. Minor variations in brightness and image clarity were attributed to manual lens alignment and LED placement tolerances. Future enhancements may include automated optical alignment, anti-reflective coatings, and adaptive brightness control. The results demonstrate that the proposed system is a feasible and energy-efficient solution for automotive lighting, suitable for vehicle branding, safety indicators, and smart lighting applications.