FocusAR: Auto-focus Augmented Reality Eyeglasses for both Real World and Virtual Imagery

Chakravarthula, Praneeth; Dunn, David; Akşit, Kaan; Fuchs, Henry

doi:10.1109/tvcg.2018.2868532

Cited by 63 publications

(27 citation statements)

References 35 publications

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“…The lens (or mirror) equation, 𝑑𝑑 𝑖𝑖 = 𝑓𝑓𝑑𝑑 0 /(𝑑𝑑 0 − 𝑓𝑓), implies that the image distance can be adjusted by varying the focal length of the lens or the distance of the object (where 𝑑𝑑 𝑖𝑖 , 𝑑𝑑 0 , and 𝑓𝑓 are the distance between the lens and image, distance between the object and lens, and focal length of the lens, respectively). Compared to previously proposed varifocal display architecture 40,41 , "binary focus" switching using the CASA has limited focus plane. The primary purpose of implementation of the CASA to AR glasses prototype is reducing form factor while maintaining high image quality and large FoV.…”

Section: Ar Glasses Prototypementioning

confidence: 99%

Actuating Compact Augmented Reality Devices by Artificial Muscle

Kim

Shin

et al. 2021

Preprint

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An artificial muscle actuator resolves practical engineering problems in compact wearable devices, which are limited to conventional actuators such as electromagnetic actuators. Abstracting the fundamental advantages of an artificial muscle actuator provides a small-scale, high-power actuating system for developing varifocal augmented reality (AR) glasses and naturally fit haptic gloves. Here, we design a shape memory alloy (SMA)-based lightweight and high-power artificial muscle actuator, the so-called compliant amplified SMA actuator (CASA). Despite its light weight (0.22 g), the CASA has a high power density of 1.7 kW/kg and an actuation strain of 300%. We show how CASA enables image depth control and an immersive tactile response in the form of AR glasses and haptic gloves whose thin form factor and high power density can hardly be achieved by conventional actuators.

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Section: Ar Glasses Prototypementioning

confidence: 99%

Actuating Compact Augmented Reality Devices by Artificial Muscle

Kim

Shin

et al. 2021

Preprint

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“…Either using machine learning or classical optimization methods, there isn't yet a single design pipeline that optimizes an entire design process of NEDs, while supporting custom needs such as providing prescription support (Chakravarthula et al, 2018), enhanced vision and color capabilities (Langlotz et al, 2018), and opto-mechanical designs that fit perfectly with a user's facial and eye structure. Beyond these, providing accommodation support in next generation displays regarding heating issues, occlusion support improved optics, dynamic range and field of view are still unresolved points in next generation display designs.…”

Section: Frontiers Inmentioning

confidence: 99%

Telelife: The Future of Remote Living

Orlosky

Sra

Bektaş

et al. 2021

Front. Virtual Real.

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In recent years, everyday activities such as work and socialization have steadily shifted to more remote and virtual settings. With the COVID-19 pandemic, the switch from physical to virtual has been accelerated, which has substantially affected almost all aspects of our lives, including business, education, commerce, healthcare, and personal life. This rapid and large-scale switch from in-person to remote interactions has exacerbated the fact that our current technologies lack functionality and are limited in their ability to recreate interpersonal interactions. To help address these limitations in the future, we introduce “Telelife,” a vision for the near and far future that depicts the potential means to improve remote living and better align it with how we interact, live and work in the physical world. Telelife encompasses novel synergies of technologies and concepts such as digital twins, virtual/physical rapid prototyping, and attention and context-aware user interfaces with innovative hardware that can support ultrarealistic graphics and haptic feedback, user state detection, and more. These ideas will guide the transformation of our daily lives and routines soon, targeting the year 2035. In addition, we identify opportunities across high-impact applications in domains related to this vision of Telelife. Along with a recent survey of relevant fields such as human-computer interaction, pervasive computing, and virtual reality, we provide a meta-synthesis in this paper that will guide future research on remote living.

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“…Recently, a very promising body of work has become available on prescription correction in near‐eye displays [CDAF18, PKW18, LHG∗18]. These methods allow for automating per‐user image modifications using all or some of the following hardware: (1) a pair of focus‐changing optical layouts for partially or globally changing the optical power of the real world [MN15], (2) a gaze‐tracking mechanism to predict where a user is looking at, and (3), a depth sensor or a pair of conventional cameras to interpret real‐world depths in front of the user, increasing the accuracy of gaze estimations.…”

Section: Immersive Near‐eye Display Technologiesmentioning

confidence: 99%

Near‐Eye Display and Tracking Technologies for Virtual and Augmented Reality

Koulieris

Akşit

Stengel

et al. 2019

Computer Graphics Forum

171

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Virtual and augmented reality (VR/AR) are expected to revolutionise entertainment, healthcare, communication and the manufacturing industries among many others. Near‐eye displays are an enabling vessel for VR/AR applications, which have to tackle many challenges related to ergonomics, comfort, visual quality and natural interaction. These challenges are related to the core elements of these near‐eye display hardware and tracking technologies. In this state‐of‐the‐art report, we investigate the background theory of perception and vision as well as the latest advancements in display engineering and tracking technologies. We begin our discussion by describing the basics of light and image formation. Later, we recount principles of visual perception by relating to the human visual system. We provide two structured overviews on state‐of‐the‐art near‐eye display and tracking technologies involved in such near‐eye displays. We conclude by outlining unresolved research questions to inspire the next generation of researchers.

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FocusAR: Auto-focus Augmented Reality Eyeglasses for both Real World and Virtual Imagery

Cited by 63 publications

References 35 publications

Actuating Compact Augmented Reality Devices by Artificial Muscle

Actuating Compact Augmented Reality Devices by Artificial Muscle

Telelife: The Future of Remote Living

Near‐Eye Display and Tracking Technologies for Virtual and Augmented Reality

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