用光驱动触觉显示，实现高分辨率动态触感呈现。
Tactile Displays Driven by Projected Light
- 通过光热气体膨胀机制，将投影光直接转为毫米级机械位移。
- 支持1511个可寻址像素，响应速度2至100毫秒，性能远超以往。
- 适合需要高精度触觉反馈的虚拟现实、人机交互场景。
能够赋予数字内容实体触感的触觉显示器可能彻底改变人机交互方式。然而，实现感知保真度所需的分辨率、速度和动态范围仍具挑战。本文提出一种触觉显示器，通过带有毫米级光触觉像素的光电机械表面，将投影光直接转化为可见的触觉图案。这些像素利用光致热气体膨胀产生机械位移，在2至100毫秒内实现毫米级响应。采用投影光进行供电与寻址，使系统高度可扩展。我们展示了最多达1,511个可寻址像素的光学驱动显示，其像素数量是此前达到相似性能的触觉显示器的数倍。感知实验表明，该系统能以高保真度再现多样时空触觉模式。本研究为实用化、多功能的高分辨率光驱动触觉显示奠定了基础。
原文摘要 · Abstract (English)
Tactile displays that lend tangible form to digital content could transform computing interactions. However, achieving the resolution, speed, and dynamic range needed for perceptual fidelity remains challenging. We present a tactile display that directly converts projected light into visible tactile patterns via a photomechanical surface populated with millimeter-scale optotactile pixels. The pixels transduce incident light into mechanical displacements through photostimulated thermal gas expansion, yielding millimeter scale displacements with response times of 2 to 100 milliseconds. Employing projected light for power transmission and addressing renders these displays highly scalable. We demonstrate optically driven displays with up to 1,511 addressable pixels -- several times more pixels than any prior tactile display attaining comparable performance. Perceptual studies confirm that these displays can reproduce diverse spatiotemporal tactile patterns with high fidelity. This research establishes a foundation for practical, versatile high-resolution tactile displays driven by light.
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