In this paper we propose an optical see-through multi-plane display with reverse-mode polymer-stabilized liquid crystal (PSLC). Our design solves the problem of accommodation-vergence conflict with correct focus cues. In the reverse mode PSLC system, power consumption could be reduced to ~1/(N-1) of that in a normal mode system if N planes are displayed. The PSLC films fabricated in our experiment exhibit a low saturation voltage ~20 V, a high transparent-state transmittance (92%), and a fast switching time within 2 ms and polarization insensitivity. A proof-of-concept two-plane color display prototype and a four-plane monocolor display prototype were implemented.
We report a non-interferometric single-exposure technique for fabricating Pancharatnam-Berry (PB) devices with arbitrary wavefronts, via photo-patterning an azo-dye doped LC with a two-dimensional linear polarization field, whose local polarization direction can be controlled by a spatial light modulator (SLM) on the pixel level. Upon one exposure, different local LC orientations are generated simultaneously. The non-interferometric approach is insensitive to environmental disturbance, and moreover, the dynamic phase mask on the SLM can be conveniently reconfigured by a computer. Our fabricated PB gratings, qplates and hologram exhibit good optical performances. Such a simple yet reconfigurable fabrication method enables new PB devices to be developed, and it would open a new gateway towards widespread applications.
Based on fast‐response polymer‐stabilized liquid crystal scattering shutters, we designed a full‐color multi‐plane optical see‐through head‐mounted display for augmented reality applications. Red, green, and blue light‐emitting diodes (LEDs) are used to illuminate a digital micromirror device in time sequence to create a full‐color 3D scene. A quasi‐collimated image projection source, with a large depth of focus, was designed, in order to ensure sharp pictures projected on different polymer‐stabilized liquid crystal films at different depth. Our system provides high‐quality full‐color images with correct depth information and thus solves the accommodation–vergence conflict problem. A proof‐of‐concept binocular full‐color two‐plane optical see‐through head‐mounted display prototype is demonstrated.
In this paper we propose an optical see-through head mounted display (HMD) for augmented reality display by utilizing reverse mode polymer-stabilized liquid crystal (PSLC). The system has lower power consumption compared with our previous work which employs the normal mode PSLC. The HMD provides the depth information accurately and solves the accommodationvergence conflict problem caused in the conventional HMDs.
Author KeywordsMulti-plane; head mounted display; 3D display; augmented reality; reverse mode polymer-stabilized liquid crystal.
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