Dual layer electrode liquid crystal lens for 2D/3D tunable endoscopy imaging system.

Area of Science:

• Optics and Photonics
• Biomedical Engineering
• Materials Science

Background:

• Current 3D endoscopes rely on double fixed lenses, limiting adaptability.
• Existing endoscopic lenses lack dynamic focusing capabilities and mode switching.
• Miniaturization of endoscopic optical components is crucial for improved medical imaging.

Purpose of the Study:

• To develop a compact, multi-functional liquid-crystal lens (MFLC-lens) for advanced endoscopic applications.
• To enable switchable 2D and 3D imaging modes with dynamic focus adjustment.
• To investigate the optimization of a high-resistance layer for enhanced MFLC-lens performance.

Main Methods:

• Design and fabrication of a dual-layer electrode structure for the MFLC-lens.
• Application of a high-resistance layer to achieve gradient electric-field distribution.
• Investigation of high-resistive layer parameters to optimize lens performance.
• Characterization of the MFLC-lens for switchable 2D/3D modes and focus adjustability.

Main Results:

• Demonstration of a 1.42mm diameter MFLC-lens, significantly smaller than existing 3D endoscopic lenses.
• Successful implementation of switchable 2D and 3D imaging modes.
• Achieved dynamic focus adjustment capability in both 2D and 3D modes.
• Identified optimal parameters for the high-resistance layer to induce ideal liquid crystal molecule alignment.

Conclusions:

• The developed MFLC-lens offers a significant advancement over conventional fixed-lens systems in 3D endoscopy.
• The lens's compact size, mode-switching, and focus adjustability enhance endoscopic imaging potential.
• Further optimization of the high-resistance layer parameters can lead to improved MFLC-lens performance for various applications.