## 3 Results and Discussion  
### Experimental Results and Discussion  
Figure 1 illustrates our adjustable polarizing flip plate and headlight filters. Figure 2 shows the LED headlights on the left, which presented significant glare, whereas the headlight on the right was attached with a set of polarizing filters and thus exhibited much less observable glare. Figure 3 presents the polarizing equipped headlights, observed with and without the polarizing flip plate, demonstrating a further reduction in glare when using the flip plate. From Figures 2 and 3, we can see a drastic diminishing of glare. This is a satisfactory result, albeit qualitative. Figure 1: The polarizing flip plate (**top**) and headlight filters (**bottom**) used in our experiment. To quantify the effectiveness of our polarized system, we sought to measure its illuminance and luminance in comparison to conventional headlights. Figure 4 includes the illuminance measurements from four different types of lamps: 25 W (LED), 28 W (LED), 30 W (LED), and 60 W (Halogen). The results of our experiments demonstrate that the polarized 30 W LED headlight could provide the same illuminance (approximately 32,000 lux) as the 60 W halogen bulb. This means that our polarized LED system could replace the standard 60 W halogen headlights while providing adequate illumination for the driver. Figure 3: Pictures of polarizing filter-equipped LED headlights, observed with (**right**) and without (**left**) the polarizing flip plate. Figure 2: Pictures of LED headlights with (**right**) and without (**left**) polarizing filters. Figure 5 illustrates our illuminance measurements through two polarizing filters (the filters attached to both the headlights and flip plate). In all three cases of LEDs, the illuminance was reduced by approximately 97.5%, meaning that a driver using our proposed system only receives 2.5% of the illuminance from a car moving in the opposite direction. This reduction in illuminance corresponds with the near elimination of glare observed in Figure 3.  
Figure 6 shows our illuminance measurements after the light passed through only the headlight's polarizing filter. We measured a luminance reduction of approximately 56%, which is consistent with our illuminance findings for light passing through one polarizing filter in Figure 4.  
Figure 4: Illuminance measurements of LED (25 W, 28 W, and 30 W) and halogen headlights (60 W). Figure 5: Illuminance measurements of LED headlights with different powers (25 W, 28 W, and 30 W). Polarized measurements are taken after light passed through both the polarized headlights’ filter and flip plate. Figure 7 is our luminance measurements after light passed through both the polarized headlight filter and the flip plate. The results depict a net luminance reduction of about 97.5%, which is consistent with the values recorded for the illuminance of light passing through two polarizing filters in Figure 5.  
Figure 8 shows the temperature measurements of the polarizing filters in the halogen and LED lighting systems. According to this figure, it is apparent that the filter's temperature in the halogen system increased by nearly 30 \({}^{\circ}\)C, whereas the LED filter only experienced a 5 \({}^{\circ}\)C increase over the same period. Because of lower temperatures, the polarizing filters in the LED lighting system will have a significantly higher operating lifes  
Figure 6: Luminance measurements of LED headlights with different powers (25 W, 28 W, and 30 W). Polarized luminance measurements were taken after light passed through only the headlights’ polarizing filter. Figure 7: Luminance measurements of LED headlights with different powers (25 W, 28 W, and 30 W) after the light passed through both the polarizing filter and polarizing flip plate. pan.