Augmented Reality Vector Light Field Display with Large Viewing Distance Based on Pixelated Multilevel Blazed Gratings
Glasses-free augmented reality (AR) 3D display has attracted great interest in its ability to merge virtual 3D objects with real scenes naturally, without the aid of any wearable devices. Here we propose an AR vector light field display based on a view combiner and an off-the-shelf purchased project...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/8/8/337 |
| _version_ | 1797522384904781824 |
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| author | Jiacheng Shi Jianyu Hua Fengbin Zhou Min Yang Wen Qiao |
| author_facet | Jiacheng Shi Jianyu Hua Fengbin Zhou Min Yang Wen Qiao |
| author_sort | Jiacheng Shi |
| collection | DOAJ |
| description | Glasses-free augmented reality (AR) 3D display has attracted great interest in its ability to merge virtual 3D objects with real scenes naturally, without the aid of any wearable devices. Here we propose an AR vector light field display based on a view combiner and an off-the-shelf purchased projector. The view combiner is sparsely covered with pixelated multilevel blazed gratings (MBG) for the projection of perspective virtual images. Multi-order diffraction of the MBG is designed to increase the viewing distance and vertical viewing angle. In a 20-inch prototype, multiple sets of 16 horizontal views form a smooth parallax. The viewing distance of the 3D scene is larger than 5 m. The vertical viewing angle is 15.6°. The light efficiencies of all views are larger than 53%. We demonstrate that the displayed virtual 3D scene retains natural motion parallax and high brightness while having a consistent occlusion effect with natural objects. This research can be extended to applications in areas such as human–computer interaction, entertainment, education, and medical care. |
| first_indexed | 2024-03-10T08:28:41Z |
| format | Article |
| id | doaj.art-c725c4a010aa40129b9418b9cb166d08 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T08:28:41Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-c725c4a010aa40129b9418b9cb166d082023-11-22T09:16:52ZengMDPI AGPhotonics2304-67322021-08-018833710.3390/photonics8080337Augmented Reality Vector Light Field Display with Large Viewing Distance Based on Pixelated Multilevel Blazed GratingsJiacheng Shi0Jianyu Hua1Fengbin Zhou2Min Yang3Wen Qiao4School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, ChinaSchool of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, ChinaSchool of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, ChinaSVG Optronics, Co., Ltd., Suzhou 215026, ChinaSchool of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, ChinaGlasses-free augmented reality (AR) 3D display has attracted great interest in its ability to merge virtual 3D objects with real scenes naturally, without the aid of any wearable devices. Here we propose an AR vector light field display based on a view combiner and an off-the-shelf purchased projector. The view combiner is sparsely covered with pixelated multilevel blazed gratings (MBG) for the projection of perspective virtual images. Multi-order diffraction of the MBG is designed to increase the viewing distance and vertical viewing angle. In a 20-inch prototype, multiple sets of 16 horizontal views form a smooth parallax. The viewing distance of the 3D scene is larger than 5 m. The vertical viewing angle is 15.6°. The light efficiencies of all views are larger than 53%. We demonstrate that the displayed virtual 3D scene retains natural motion parallax and high brightness while having a consistent occlusion effect with natural objects. This research can be extended to applications in areas such as human–computer interaction, entertainment, education, and medical care.https://www.mdpi.com/2304-6732/8/8/337diffraction efficiencymultilevel blazed gratingsaugmented reality3D display |
| spellingShingle | Jiacheng Shi Jianyu Hua Fengbin Zhou Min Yang Wen Qiao Augmented Reality Vector Light Field Display with Large Viewing Distance Based on Pixelated Multilevel Blazed Gratings Photonics diffraction efficiency multilevel blazed gratings augmented reality 3D display |
| title | Augmented Reality Vector Light Field Display with Large Viewing Distance Based on Pixelated Multilevel Blazed Gratings |
| title_full | Augmented Reality Vector Light Field Display with Large Viewing Distance Based on Pixelated Multilevel Blazed Gratings |
| title_fullStr | Augmented Reality Vector Light Field Display with Large Viewing Distance Based on Pixelated Multilevel Blazed Gratings |
| title_full_unstemmed | Augmented Reality Vector Light Field Display with Large Viewing Distance Based on Pixelated Multilevel Blazed Gratings |
| title_short | Augmented Reality Vector Light Field Display with Large Viewing Distance Based on Pixelated Multilevel Blazed Gratings |
| title_sort | augmented reality vector light field display with large viewing distance based on pixelated multilevel blazed gratings |
| topic | diffraction efficiency multilevel blazed gratings augmented reality 3D display |
| url | https://www.mdpi.com/2304-6732/8/8/337 |
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