2 Light distribution design for the supplementary lighting systems and the analysis for illuminance and light intensity
2.1. Light distribution design for the supplementary lighting systems
Since the lighting illuminance of a single LED can not meet the national general lighting standard, it is generally used in the array multiple LED lamp beads to make into rectangular, circular, and a series of trapezoidal shaped light source lighting systems to meet different lighting needs. Because the light intensity distribution of the target plane contributed by all the LED light in the array after superposing the light intensity of each one is Lambertian distribution, so the light intensity and the spatial distribution of light intensity on the target plane are mainly determined by the number of LEDs in the array [5]. In this paper, we use LXHL-PD01's red LED and LXHL-PB01 blue LED of Lumileds company for out experiment. Mechanical model and light distribution curve of the LEDs are displayed in Fig. 2 and Fig. 3.