Superior homogeneity and efficient five-face emitting DLED module optimized optical design and practical application for automotive signal lighting

This research is a preceding study of high-brightness surface emitting technology to overcome functional limitations while compensating for light loss due to design pattern and proposes a tapered five-face emitting technology that increases light efficiency in 3D pattern lamps and is cost-effective. Bevel five-face LED technology is a cost-optimized solution compared to Top-view in terms of uniformity and brightness by applying the side wall angle, which irradiates light in five directions and has the highest light extraction efficiency. The beam angle of the five-face LED is about 150 degrees, and the light extraction efficiency increased by 20% when tilted at a specific angle to the side wall of LED. In the future, it is thought that high-brightness surface light emitting technology will help to implement technical research or 3D effects that can implement both functions simultaneously in the same area.