Large aperture liquid crystal lens with an imbedded floating ring electrode

Area of Science:

• Optics and Photonics
• Materials Science

Background:

• Conventional large aperture liquid crystal lenses often require thick dielectric layers, leading to higher operating voltages.
• Optimizing electric field distribution is crucial for improving the performance of liquid crystal lenses.

Purpose of the Study:

• To propose and analyze a novel hole-patterned large aperture liquid crystal lens design.
• To reduce the operating voltage and enhance the lens power of large aperture liquid crystal lenses.

Main Methods:

• A 6 mm diameter hole-patterned large aperture liquid crystal lens was designed and fabricated.
• A floating ring electrode was embedded at the interface between the dielectric and liquid crystal layers.
• The electric field distribution and its effect on lens performance were investigated.

Main Results:

• The proposed design effectively concentrates the electric field near the aperture center and distributes fringing fields.
• The required thickness of the dielectric layer was significantly reduced compared to conventional designs.
• The developed lens exhibits a low operating voltage, substantial lens power, and a low wavefront error of approximately 0.07 λ.

Conclusions:

• The embedded floating ring electrode is an effective strategy for enhancing electric field control in large aperture liquid crystal lenses.
• The proposed design offers a promising solution for low-voltage, high-performance large aperture liquid crystal optical systems.