Traditional medical displays, such as ultra high definition (UFD) flat panel display and binocular loupe, have limitation on physical space occupation and low optical magnification, which are not user-friendly for doctors. Wearable device, especially augmented reality wearable display, as next generation emerging display, becomes more and more popular in smart city and industry application. There are limitations on traditional wearable display solutions, such as poor color uniformity, low optical magnification, and limited peripheral vision. Those issues are pain points in medical application, which needs high display quality in surgical operation and training. Comparing with traditional optical solution, our proposed solution is to develop a top-down pantoscopic tilting with asymmetric freeform optical system for medical application. By introducing off axis optical freedom, the system can avoid traditional optical solutions' (waveguide type, birdbath type) limitations such as chromatic aberration, low transparency and limited peripheral vision etc. In this project, RD team will build a pantoscopic single-layer transparent off-axis optical structure, with a double freeform anti-distortion imaging compensation using high PPI (Pixel Per Inch) microdisplay, which is different from traditional low magnification off-axis system. Based on relay magnification iteration methodology, the optical system will provide high optical magnification, high visual quality and unlimited peripheral vision with a compact glasses-type form factor. The developed optical system can provide an unique optical solution for wearable AR display, and can be applied in high display requirement wearable augmented reality application, such as medical assist, industrial training and other professional applications.
Pantoscopic Optical System for Wearable Medical Display (ARD/272)
16 / 09 / 2021 - 15 / 06 / 2022
Dr Xiuling ZHU