Paper PC12913-24
Paper PC12913-24
Shape memory alloy actuators to address vergence-accommodation conflict in XR
29 January 2024 • 9:40 AM - 10:00 AM PST | Moscone Center, Room 3008 (Level 3 West)
Abstract
The Vergence-Accommodation Conflict (VAC) presents a well-documented and significant challenge in XR, causing visual discomfort and fatigue. It has been shown that dynamically changing the focus distance of the display enables eye’s vergence and accommodation to agree and has significant user benefits. Bringing focus adjustment to product has numerous challenges including power consumption, space constraints and added mass.
We will present how Shape Memory Alloy (SMA) can be utilised to enable dynamic focal adjustment and how CML’s SMA actuators are particularly well-suited to achieve this with low power and low added mass in a manner suited for high-volume manufacture.
We will present how Shape Memory Alloy (SMA) can be utilised to enable dynamic focal adjustment and how CML’s SMA actuators are particularly well-suited to achieve this with low power and low added mass in a manner suited for high-volume manufacture.
Presenter
Nick Heijne
Cambridge Mechatronics Ltd. (United Kingdom)
Nick Heijne is Head of AR/VR at Cambridge Mechatronics and is interested in bringing experience of designing and manufacturing high precision, mass produced SMA actuators for the mobile phone camera market to solve challenges in AR and VR products. He has been at Cambridge Mechatronics for 5 years, as a chartered mechanical engineer by background he has developed several new SMA actuators and is named on 20 patent families. He has an MEng in Mechanical Engineering from University of Southampton.