Fig. 1. （a）Exposure orientation picture generated by the simulator；（b）Flow chart for the production of liquid crystal mixed q-plate；（c）~（e）Optical structure of the inner and outer ring radius ratios of 1∶3，1∶1，and 3∶1 under a polarizing microscope.

Fig. 2. Diffraction experiment optical path device diagram

Fig. 3. Comparison of numerical simulation results and diffraction experimental results of liquid crystal mixed q-plate

Fig. 4. Simulation results of diffraction of inner and outer rings in liquid crystal mixed q-plate

Fig. 5. Simulation results of liquid crystal mixed q-plate with q₁=0，q₂=-1.

Fig. 6. Simulation results of the influence of the positive and negative topological charge numbers of the inner and outer rings on the diffraction spots in liquid crystal mixed q-plate

Fig. 7. Effect of phase difference between inner and outer circles of liquid crystal mixed q-plate on diffraction spot，q₁∶q₂=1∶-1.

Fig. 8. Fresnel diffraction patterns of liquid crystal mixed q-plate at different distances.（a）r₁∶r₂=1∶3；（b）r₁∶r₂=1∶1；（c）r₁∶r₂=3∶1.