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Combining Augmented Reality and 3D Printing to Display Patient Models on a Smartphone

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Multi-plane augmented reality display based on cholesteric liquid crystal reflective films.

Quanming Chen, Zenghui Peng, Yan Li

|May 5, 2019

Summary

This study introduces a novel multi-plane augmented reality (AR) display using cholesteric liquid crystal (CLC) films to solve vergence-accommodation conflict. The new design offers correct focus cues for immersive AR experiences.

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Area of Science:

Optics
Display Technology
Human-Computer Interaction

Background:

Conventional augmented reality (AR) head-mounted displays (HMDs) suffer from the vergence-accommodation conflict.
This conflict degrades visual quality and can cause user discomfort.

Purpose of the Study:

To propose and demonstrate a compact multi-plane display design for AR HMDs.
To resolve the vergence-accommodation conflict by providing accurate focus cues.

Main Methods:

Utilized cholesteric liquid crystal (CLC) reflective films with polarization selectivity.
Employed a polarization switch to control light reflection and achieve multiple focal planes.
Developed a dual-plane prototype and proposed a multi-plane stacking scheme.

Main Results:

Implemented a flicker-free dual-plane AR display prototype.
The prototype provides correct focus cues and operates at a relatively low voltage.
Demonstrated the feasibility of stacking CLC films for more than two depth planes.

Conclusions:

The proposed CLC-based multi-plane display effectively addresses the vergence-accommodation conflict in AR.
This technology offers a pathway to more comfortable and visually realistic AR experiences.
The compact design and stacking potential enable scalable multi-depth AR displays.