A new 3D display solution co-invented by the team of Professor Daping Chu, Director of Cambridge Centre for Advanced Photonics and Electronics (CAPE) and Academic Director of the Cambridge University - Nanjing Centre of Technology and Innovation, and Huawei Munich Research Center, has overcome the "nausea and visual fatigue” usually caused by 3D devices, and is expected to bring a new AR experience. At present, the prototype has landed in the Cool Technology Exhibition of the 2020 Nanjing Tech Week.
Specifically, the solution converts each pixel into a thin, completely parallel beam and projects it on the user's retina, so that no matter where the user focuses, it is possible to ensure that the resulting image is always clear. Since the pixel beam is thin, it is almost completely unaffected by the lens of the human eye. Because it is focused on display at any time, the required information rate is only one image per frame per eye, and it is easy to be handled by modern computers just like the conventional stereoscopic displays, therefore, it is three orders of magnitude faster than holographic 3D displays.
Researchers created a prototype demonstration of an augmented reality display and used multiple beam splitters to simply and effectively expand the visual window, allowing users to see through it the 3D image superimposed on the real world. The field of view of the prototype is 36.5°, which is equivalent to looking at a computer monitor at a distance of 1 meter. At present, more than 50 volunteers have tried on the prototype, and the subjects generally feel comfortable with the 3D images without symptoms such as nausea and dizziness. The research has been published on Research under the title of Accommodation-Free Head Mounted Display with Comfortable 3D Perception and an Enlarged Eye-box (DOI: 10.34133/2019/9273723).
Profile : Professor Daping Chu
He is a tenured chair professor of the University of Cambridge, the Director the Cambridge Centre for Advanced Photonics and Electronics (CAPE) and Centre for Photonic Devices and Sensors Group, and the Academic Director of Cambridge University – Nanjing Centre of Technology and Innovation. Also, he is a visiting professor of Tsinghua University, Nanjing University, Southeast University and several other universities in China.
Professor Chu’s research activity has been in the areas of both theoretical and experimental condensed matter physics, semiconductor devices and materials, nanostructures and properties, ferroelectrics non-volatile memory devices, organic electronics and inkjet fabrication process.
His current research includes space light modulation using holography for true 3D displays, digital illumination and optical communications. Combining 3D image reconstruction with full parallax and occlusion effects and spatial interactions in spectrum and time domains will provide participants the immersive experience which never exists before. This is now being explored through research work to increase both spatial and temporal bandwidths and development of new approaches to best utilise the existing technology.