Retinal Projection Near‐Eye Displays with Huygens' Metasurfaces. Issue 5 (5th January 2023)

• Record Type: Journal Article
• Authors: Song, Weitao; Liang, Xinan; Li, Shiqiang; Moitra, Parikshit; Xu, Xuewu; Lassalle, Emmanuel; Zheng, Yuanjin; Wang, Yongtian; Paniagua‐Domínguez, Ramón; Kuznetsov, Arseniy I.
• Is Part Of: Advanced optical materials. Volume 11:Issue 5(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2023-01-05
• Subjects: holography -- metasurfaces -- near‐eye displays; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.202202348
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: Most of current commercial near‐eye 3D displays use traditional stereoscopic approach to generate the 3D information. A well‐known issue for this type of technology is the vergence and accommodation conflict, which leads to visual confusion and fatigue for the viewer. To address this problem, a proof‐of‐concept solution based on retinal projection technology has been developed to provide accommodation‐free virtual images by using a small aperture (360 µm × 360 µm) transparent Huygens' metasurface hologram as the display device. The virtual image is generated using a visible laser illuminating a metasurface hologram, which is then directly projected onto the retina using an optical see‐through eyepiece. Using this concept, this work experimentally demonstrates a compact and wearable near‐eye display of light weight (≈50 g, including spectacle frames, light source, and battery) creating accommodation‐free images (clear ranging from 0.5 to 2 m), overlaid with the real world and directly viewed by naked eye. To do so, a new design method is introduced for retinal projection near‐eye displays that, inherently, is able to solve the vergence‐accommodation conflict using a small aperture Huygens' metasurface hologram. Abstract : A compact augmented‐reality near‐eye display method with the virtual image directly projected to retina is introduced. A compact and wearable near‐eye display is realized of light weight (≈50 g, including spectacle frames, light source and battery) creating accommodation‐free images (clear ranging from 0.5 to 2 m), overlaid with the real world and directly viewed by naked eye.