Waveguide display: Difference between revisions
Xinreality (talk | contribs) No edit summary |
Xinreality (talk | contribs) |
||
| Line 52: | Line 52: | ||
! Technology !! Working Principle !! Key Advantages !! Key Disadvantages !! Efficiency !! Max FOV !! Key Proponents | ! Technology !! Working Principle !! Key Advantages !! Key Disadvantages !! Efficiency !! Max FOV !! Key Proponents | ||
|- | |- | ||
! Geometric (Reflective) | ! [[Geometric]] (Reflective) | ||
| Arrays of embedded partially reflective mirrors guide and extract light | | Arrays of embedded partially reflective mirrors guide and extract light | ||
| • Excellent color uniformity<br>• Minimal rainbow artifacts<br>• High brightness<br>• Achromatic operation | | • Excellent color uniformity<br>• Minimal rainbow artifacts<br>• High brightness<br>• Achromatic operation | ||
| Line 60: | Line 60: | ||
| [[Lumus]], [[Google Glass]] | | [[Lumus]], [[Google Glass]] | ||
|- | |- | ||
! Diffractive (SRG) | ! [[Diffractive]] (SRG) | ||
| Surface relief gratings with 300-500nm periods diffract light | | Surface relief gratings with 300-500nm periods diffract light | ||
| • Scalable manufacturing<br>• Thin form factor<br>• Established supply chain<br>• Low cost potential | | • Scalable manufacturing<br>• Thin form factor<br>• Established supply chain<br>• Low cost potential | ||
| Line 68: | Line 68: | ||
| [[Microsoft HoloLens]], [[Magic Leap]], [[Vuzix]] | | [[Microsoft HoloLens]], [[Magic Leap]], [[Vuzix]] | ||
|- | |- | ||
! Holographic (VHG) | ! [[Holographic]] (VHG) | ||
| Volume holograms recorded in photopolymers | | Volume holograms recorded in photopolymers | ||
| • High angular selectivity<br>• Good transparency<br>• Curved substrate compatible<br>• Roll-to-roll capable | | • High angular selectivity<br>• Good transparency<br>• Curved substrate compatible<br>• Roll-to-roll capable | ||
| Line 76: | Line 76: | ||
| [[DigiLens]], [[Sony]] | | [[DigiLens]], [[Sony]] | ||
|- | |- | ||
! Polarization (PVG) | ! [[Polarization]] (PVG) | ||
| [[Liquid crystal]] structures with helical rotation | | [[Liquid crystal]] structures with helical rotation | ||
| • High diffraction efficiency<br>• Wide bandwidth<br>• Electrically switchable<br>• Simple fabrication | | • High diffraction efficiency<br>• Wide bandwidth<br>• Electrically switchable<br>• Simple fabrication | ||
| Line 84: | Line 84: | ||
| Research stage | | Research stage | ||
|- | |- | ||
! Metasurface | ! [[Metasurface]] | ||
| Subwavelength nanostructures manipulate light | | Subwavelength nanostructures manipulate light | ||
| • Achromatic potential<br>• Ultra-thin<br>• Multifunctional<br>• Aberration correction | | • Achromatic potential<br>• Ultra-thin<br>• Multifunctional<br>• Aberration correction | ||