Fig. 1. Top view of the liquid crystal diaphragm

Fig. 2. Cross section view of the liquid crystal diaphragm

Fig. 3. Diaphragm principle

Fig. 4. Voltage distribution diagram

Fig. 5. Normalized coordinate system of the effective area

Fig. 6. Circular electric field distribution of liquid crystal diaphragm

Fig. 7. Elliptical electric field distribution of liquid crystal diaphragm

Fig. 8. Electric field distribution.（a）V₁=5.7 V，V₂=3.5 V，V₃=5.4 V，V₄=3.8 V；（b）V₁=3.8 V，V₂=5.4 V，V₃=3.5 V，V₄=5.7 V；（c）V₁=V₂=V₃=V₄=4.5 V.

Fig. 9. Test system optical path

Fig. 10. Elliptic distribution of liquid crystal diaphragm

Fig. 11. Electric field center movement

Fig. 12. Comparison of simulation results