SBIR Phase I: Subtractive-waveguide based Display for Augmented Reality Smart Glasses using Spatial-temporal Multiplexed Single-CMOS Panels

SBIR 第一阶段：使用时空复用单 CMOS 面板的基于减法波导的增强现实智能眼镜显示器

• 批准号: 2335927
• 负责人: SAJJAD KHAN
• 金额: $ 27.5万
• 依托单位: COGNI TRAX
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-03-01 至 2025-02-28
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2335927&HistoricalAwards=false
• 关键词: SBIR; Phase; Subtractive; waveguide; based

The broader impact of this Small Business Innovation Research (SBIR) Phase I project is the realization of Augmented Reality (AR) displays for smart glasses that can show digital content in the full dynamic range, including the black color. The conventional optical components currently used in AR smart glasses cause the digital content to appear translucent and, hence, lack realism. The proposed work is on developing a display technology that controls per-pixel transparency in the virtual image plane, virtual objects, and 3D holograms for black color. The blocking of light for black-colored parts in a hologram can show as realistic physical objects over the background reality. Using this approach, each display pixel can be made black, semi-transparent, or transparent at a user’s will, making visibility of digital content possible even in direct sun-lit environments.This SBIR Phase I project proposes a holistic display solution for AR smart glasses that consists of three key elements: a spatially-multiplexed Total Internal Reflection–based subtractive-waveguide combiner; a single photo-reflective spatial light modulator (SLM) that is illuminated by two spatially-multiplexed illuminants; and a temporal multiplexing algorithm whereby the two spatially-multiplexed illuminants can be selectively modulated by the SLM during their dedicated sub-frame times. Since pixel-wise transparency control allows hard-edge occlusion, hence the proposed smart spatiotemporal multiplexed approach enables a single display that achieves pixel-wise hard-edge occlusion using only a single silicon display panel, thereby reducing cost and complexity while increasing see-through efficiency and battery life performance. These technological improvements are industry firsts and together allow for addressing a market need for AR devices for outdoor well-lit scenarios.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这项小型企业创新研究（SBIR）I阶段项目的更广泛影响是实现了智能眼镜增强现实（AR）显示器的实现，可以在包括黑色在内的整个动态范围内显示数字内容。当前在AR智能眼镜中使用的常规光学组件使数字内容显得半透明，因此缺乏现实主义。拟议的工作是开发一种显示技术，该技术可以控制虚拟图像平面，虚拟对象和黑色3D全息图中的每个像素透明度。全息图中黑色零件的光阻断可以显示为背景现实的逼真的物理对象。使用这种方法，每个显示像素都可以在用户的​​意愿下制成黑色，半透明或透明，即使在Direct Sun-Lit环境中也使数字内容的可见性成为可能。该SBIR I阶段I期项目建议AR智能玻璃的整体显示解决方案，该镜头由三个关键元素组成：一个由空间上层状的内部反射式内部反射式式副标题 - 基于基础的亚副套件;一个单一的光反射空间调制器（SLM），由两种空间上的照明剂照亮；以及一种临时多路复用算法，通过该算法在其专用的子框架时间期间，SLM可以选择性地调节两个空间上的照明剂。由于Pixel和Pixel的透明度控制允许硬边的闭塞，因此提出的智能时空多路复用方法可以实现单个显示，该显示器仅使用单个硅显示面板即可实现像素硬边的闭塞，从而降低了成本和复杂性，同时提高了透视效率和电池寿命。这些技术的改进是行业的第一步，共同允许满足对AR设备的市场需求，用于户外光线充足的方案。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响审查标准，通过评估被认为是珍贵的支持。