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Vik Parthiban (MIT Media Lab): AR Technologies: Lightfields vs Holograms
- 1. AR hardware Vik Parthiban 2
- 2. AR hardware Vik Parthiban 3 Advances in AR technology By Vik Parthiban
- 3. AR hardware Vik Parthiban 4 AR platforms • Phone/Tablet-based AR (Snapchat World Lenses, Apple ARkit, Google ARcore) • Wearable AR Displays (Google Glass, Lumus Vision) • Wearable MxR Displays (Microsoft Hololens, Magic Leap) • Non-wearable experiences
- 4. AR hardware Vik Parthiban 5 Phone/Tablet-based AR
- 5. AR hardware Vik Parthiban 6 Pokémon GO and Snapchat lensstudio.snapchat.com *Note the shadows under each object pokemongo.com
- 6. AR hardware Vik Parthiban 7 Apple ARkit Wingnut AR backed by director Peter Jackson (Lord of the Rings, Hobbit, etc)
- 7. AR hardware Vik Parthiban 8 Mobile AR applications ARmeasure
- 8. AR hardware Vik Parthiban 9 Constraints • Restricted to phone or tablet • Not really immersive
- 9. AR hardware Vik Parthiban 10 AR headsets
- 10. AR hardware Vik Parthiban 11 How AR optics work Google Glass Lumus Vision Microsoft Hololens https://uploadvr.com/waveguides-smartglasses/ Pupil expansion technique
- 11. AR hardware Vik Parthiban 12 Google Glass • Monocular • Prism optics • Full-color • Image plane very close • $1500 x.company/glass. Image by JM Internet Group
- 12. AR hardware Vik Parthiban 13 Google Glass Video by Youtube user, JerryRigEverything
- 13. AR hardware Vik Parthiban 14 Lumus Vision Tech: • Optical Engine only • Reflective Waveguides • ~40 DFOV • Full-color • Image Plane at infinity Company Partners: • Daqri, Atheer CES 2018, Las Vegas. Image by Slashgear.
- 14. AR hardware Vik Parthiban 15 Lumus Vision CES 2017, Las Vegas. By RoadtoVR.
- 15. AR hardware Vik Parthiban 16 Constraints • Adds layer of content on real-world with no real understanding of environment • Single focal planes; No depth-of-field
- 16. AR hardware Vik Parthiban 17 Mixed Reality (MxR) headsets
- 17. AR hardware Vik Parthiban 18 Microsoft Hololens • Stacked Waveguides • ~35 FOV • Full-color • Environment mapping • $3000 Hololens by Microsoft.
- 18. AR hardware Vik Parthiban 19 Microsoft Hololens Demo by Abhishek Singh at New York Central Park Vbandi.net Mashable
- 19. AR hardware Vik Parthiban 20 Magic Leap One • Digital Lightfields • Full-color • Environment Mapping • Visual Perception with Machine Learning A light-field creates the effect of depth-of-field, allowing objects in focus to appear crisp and those not to appear blurry. ML1 by Magic Leap.
- 20. AR hardware Vik Parthiban 21 Magic Leap Images courtesy of Magic Leap Inc.
- 21. AR hardware Vik Parthiban 22 Constraints • Field-of-View (FOV) • Light efficiency (light in vs light out) • Brightness (nits) • Cost of manufacturing
- 22. AR hardware Vik Parthiban 23 Non-wearable Experiences
- 23. AR hardware Vik Parthiban 24 Peppers Ghost “Hologram” Tupac Shakur “hologram”, Coachella 2012
- 24. AR hardware Vik Parthiban 25 Leap Motion Project Northstar (2018) Leap Motion AR project Northstar
- 25. AR hardware Vik Parthiban 26 Photophoretic trap volumetric display (2018) https://www.nature.com/articles/nature25176 Courtesy of Dr. Daniel Smalley, BYU
- 26. AR hardware Vik Parthiban 27 What’s Next? • Newer waveguide technology - larger FOV • More focal planes • Variable optics • Metamaterials (nonlinear optics) • Small form-factor fiber displays • Spatial-light modulators to control phase properties of light • Improved computer vision • Robust eye-tracking • Photonics manufacturing This graphic illustrates a thin lens with long focal length (A), a thick lens with short focal length (B), and a thin metamaterial lens with extremely short focal length (C). University of Toronto, 2013 Courtesy of Object-Based Media, MIT Media Lab 2017.
- 27. AR hardware Vik Parthiban 28 Thank You
Notas do Editor
- https://uploadvr.com/waveguides-smartglasses/
- http://www.businessinsider.com/ride-a-motorcycle-while-wearing-google-glass-2014-3
- Lumus: https://lumusvision.com/products/oe33/ https://techcrunch.com/2018/01/09/lumus-shows-off-the-latest-of-its-increasingly-tiny-augmented-reality-displays/ Lumus has more recently been the OEM supplier to both Daqri and Atheer. Vuzix: https://gizmodo.com/the-vuzix-blade-is-what-google-glass-always-wanted-to-b-1821964545 Partners: https://www.theverge.com/ces/2017/1/5/14148182/lumus-maximus-sleek-augmented-reality-glasses-prototypes
- https://www.roadtovr.com/lumus-maximus-55-degree-field-of-view-thin-optics-augmented-reality/
- Nonlinear optics (NLO) is the branch of optics that describes the behavior of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light. https://www.ece.utoronto.ca/news/new-metamaterial-lens/ This graphic illustrates a thin lens with long focal length (A), a thick lens with short focal length (B), and a thin metamaterial lens with extremely short focal length (C).