Fig. 3

Analysis and optimization of inkjet printing process. a Schematic illustration of color crosstalk and resulted stray lights (readapted from Code V, scale bar: 10 mm). b Simulated diffraction efficiencies in left, center and right regions of a green DOE with uniform pitch and thickness distribution. The wavelengths of RGB lasers in display engine are represented by the colored vertical lines. Optimized distribution of c thickness and d pitch. e Captured image of the printing process. Scale bar: 100 μm f Photo of the green DOE sample with eight sections noted by the numbered arrows. Scale bar: 10 mm