Fig. 1. Outline design of lampshade in LightTools. (a) Fill outline; (b) network cable outline

Fig. 2. CD pattern model. (a) Overall model of lampshade; (b) diffuser surface

Fig. 3. Comparison of CD pattern sizes. (a) Center line width is 100 um, and peripheral line width is 200 μm; (b) line width is 300 μm

Fig. 4. Ray tracing simulation of LED downlight lighting system. (a) Ray tracing of single light source; (b) ray tracing with receiver

Fig. 5. Simulation results of ray tracing. (a) Light power density distribution; (b) illumination display curve

Fig. 6. Simulation results of ray tracing at line width of 100 μm. (a) Light power density distribution; (b) illumination display curve

Fig. 7. Simulation results of ray tracing at line width of 200 μm. (a) Light power density distribution; (b) illumination display curve

Fig. 8. Simulation results of ray tracing at a line width of 300 μm. (a) Light power density distribution; (b) illumination display curve

Fig. 9. Injection molding process

Fig. 10. LIGA mold making technology process

Fig. 11. Flow chart of electroforming mold process

Fig. 12. Diagrams of CD pattern microstructure. (a) 3D outline display; (b) 2D flat display

Fig. 13. Diameter test schematic

Fig. 14. Depth test schematic

Fig. 15. Comparison of CD pattern microstructure diffuser and ordinary diffuser. (a) Microstructure diffuser; (b) general diffuser; (c) without diffuser

Fig. 16. Diffusion effect diagrams of light diffusers. (a) CD pattern microstructure diffuser; (b) general diffuser