AR glasses: Difference between revisions
Xinreality (talk | contribs) No edit summary |
Xinreality (talk | contribs) No edit summary |
||
| Line 22: | Line 22: | ||
=== Optics and Displays === | === Optics and Displays === | ||
Most systems employ transparent [[waveguide]] combiners or reflective [[prism]]s to channel light from [[microdisplay]]s into the user’s eyes. A 2021 review summarized state-of-the-art grating, holographic and reflective waveguide architectures.<ref name="ARDisplaysReview" /> Common display engines are [[microdisplay]]s (small [[OLED]], [[LCD]], or [[LCoS]] panels) or [[pico projector]]s. For [[binocular]] systems, dual displays provide [[stereoscopy]]. [[Holographic display]]s or [[spatial light modulator]]s are emerging in research systems.<ref name="ARDisplaysReview" /> The optics collimate and focus the image, often using precision [[waveguide]]s (e.g. [[diffractive grating|diffractive]] or [[holography|holographic]] patterns) embedded in thin glass layers. Key specifications include [[field-of-view]] (FOV), [[resolution]], and brightness ([[nits]]) to compete with ambient light. Research directions now include inverse-designed [[metasurface]] gratings that could enable full-colour holographic AR in eyeglass-scale optics.<ref name="NatureMetasurface"> | Most systems employ transparent [[waveguide]] combiners or reflective [[prism]]s to channel light from [[microdisplay]]s into the user’s eyes. A 2021 review summarized state-of-the-art grating, holographic and reflective waveguide architectures.<ref name="ARDisplaysReview" /> Common display engines are [[microdisplay]]s (small [[OLED]], [[LCD]], or [[LCoS]] panels) or [[pico projector]]s. For [[binocular]] systems, dual displays provide [[stereoscopy]]. [[Holographic display]]s or [[spatial light modulator]]s are emerging in research systems.<ref name="ARDisplaysReview" /> The optics collimate and focus the image, often using precision [[waveguide]]s (e.g. [[diffractive grating|diffractive]] or [[holography|holographic]] patterns) embedded in thin glass layers. Key specifications include [[field-of-view]] (FOV), [[resolution]], and brightness ([[nits]]) to compete with ambient light. Research directions now include inverse-designed [[metasurface]] gratings that could enable full-colour holographic AR in eyeglass-scale optics.<ref name="NatureMetasurface"> | ||
Gopakumar, M.; Lee, G-Y.; Choi, S. <i>et al.</i> (2024). | |||
“Full-colour 3D holographic augmented-reality displays with metasurface waveguides”. | |||
<i>Nature</i> 629 (800): 791–797. doi:10.1038/s41586-024-07386-0. | |||
Retrieved 30 April 2025. | |||
https://www.nature.com/articles/s41586-024-07386-0 | |||
</ref><ref name="NVIDIAAI">NVIDIA Blog (May 30, 2024). "NVIDIA Research Unveils AI-Powered Holographic Glasses Prototype". Retrieved 30 April 2025. https://blogs.nvidia.com/blog/ai-holographic-glasses/</ref> | |||
=== Sensors and Tracking === | === Sensors and Tracking === | ||