Towards Eyeglass-style Holographic Near-eye Displays with Statically
| Autor: | Xinxing Xia, Henry Fuchs, Andrei State, Yunqing Guan, Tat-Jen Cham, Praneeth Chakravarthula |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Spatial light modulator
business.industry Computer science Holographic optical element Holography Phase (waves) 020207 software engineering Field of view 02 engineering and technology 01 natural sciences law.invention 010309 optics Optics Virtual image law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Holographic display Focus (optics) business |
| Zdroj: | ISMAR |
| Popis: | Holography is perhaps the only method demonstrated so far that can achieve a wide field of view (FOV) and a compact eyeglass-style form factor for augmented reality (AR) near-eye displays (NEDs). Unfortunately, the eyebox of such NEDs is impractically small ($\sim \lt$ 1 mm). In this paper, we introduce and demonstrate a design for holographic NEDs with a practical, wide eyebox of $\sim$ 10 mm and without any moving parts, based on holographic lenslets. In our design, a holographic optical element (HOE) based on a lenslet array was fabricated as the image combiner with expanded eyebox. A phase spatial light modulator (SLM) alters the phase of the incident laser light projected onto the HOE combiner such that the virtual image can be perceived at different focus distances, which can reduce the vergence-accommodation conflict (VAC). We have successfully implemented a bench-top prototype following the proposed design. The experimental results show effective eyebox expansion to a size of $\sim$ 10 mm. With further work, we hope that these design concepts can be incorporated into eyeglass-size NEDs. |
| Databáze: | OpenAIRE |
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