Novel LED navigation lamp design

A novel optical lens for Light-emitting Diode (LED) light source is designed based on side-collimation method and two-dimensional prescribed intensity design method in nonimaging optics. Unlike rotational-collimation method used in many collimating optical systems, the side-collimation method collimates the incident rays only vertically. The 2D prescribed intensity design method is also used to design an optical surface that can distribute light uniformly in horizontal direction. The designed optical lens can collimate the light in vertical direction within plus/minus 5 degrees, while distribute the light energy uniformly in horizontal direction within 120 degrees. A LED navigation lamp system can be constructed easily using the novel optical lens. Simulation results show that constructed navigation lamp system is very efficient, whose peak intensity can reach 83cd/w under current level of white LED’s luminous efficiency.