Fig. 1. Laser source structure and test platform

Fig. 2. Optical power of laser-driven white source under different power supplies

Fig. 3. Spot detection before and after phosphor

Fig. 4. Spot image incident on the phosphor of different convergent lenses

Fig. 5. Schematic diagram of laser light structure

Fig. 6. Design principle of Fresnel lens

Fig. 7. Whole calculation flow chart

Fig. 8. Calculation flow chart of discrete point of Fresnel lens

Fig. 9. Calculation and modeling of discrete points of Fresnel lens

Fig. 10. Ray tracing results of point source

Fig. 11. Illumination distribution on receiving surface. (a) distance 40 mm from the light source, (b) distance 25 m from the light source

Fig. 12. Ultra-precision machining of Fresnel lens

Fig. 13. Laser Fresnel lamp module

Fig. 14. Lighting experiment of laser lamp