Monocular depth sensing using metalens
3-D depth sensing is essential for many applications ranging from consumer electronics to robotics. Passive depth sensing techniques based on a double-helix (DH) point-spread-function (PSF) feature high depth estimation precision, minimal power consumption, and reduced system complexity compared to...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2023-03-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2023-0088 |
| _version_ | 1797752425411510272 |
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| author | Yang Fan Lin Hung-I Chen Peng Hu Juejun Gu Tian |
| author_facet | Yang Fan Lin Hung-I Chen Peng Hu Juejun Gu Tian |
| author_sort | Yang Fan |
| collection | DOAJ |
| description | 3-D depth sensing is essential for many applications ranging from consumer electronics to robotics. Passive depth sensing techniques based on a double-helix (DH) point-spread-function (PSF) feature high depth estimation precision, minimal power consumption, and reduced system complexity compared to active sensing methods. Here, we propose and experimentally implemented a polarization-multiplexed DH metalens designed using an autonomous direct search algorithm, which utilizes two contra-rotating DH PSFs encoded in orthogonal polarization states to enable monocular depth perception. Using a reconstruction algorithm that we developed, concurrent depth calculation and scene reconstruction with minimum distortion and high resolution in all three dimensions were demonstrated. |
| first_indexed | 2024-03-12T17:04:14Z |
| format | Article |
| id | doaj.art-a5681eccacfe4a2b97d54e30b74deeeb |
| institution | Directory Open Access Journal |
| issn | 2192-8606 2192-8614 |
| language | English |
| last_indexed | 2024-03-12T17:04:14Z |
| publishDate | 2023-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-a5681eccacfe4a2b97d54e30b74deeeb2023-08-07T06:56:53ZengDe GruyterNanophotonics2192-86062192-86142023-03-0112142987299610.1515/nanoph-2023-0088Monocular depth sensing using metalensYang Fan0Lin Hung-I1Chen Peng2Hu Juejun3Gu Tian4Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA02139, USADepartment of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA02139, USADepartment of Physics, Peking University, Beijing100871, ChinaDepartment of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA02139, USADepartment of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA02139, USA3-D depth sensing is essential for many applications ranging from consumer electronics to robotics. Passive depth sensing techniques based on a double-helix (DH) point-spread-function (PSF) feature high depth estimation precision, minimal power consumption, and reduced system complexity compared to active sensing methods. Here, we propose and experimentally implemented a polarization-multiplexed DH metalens designed using an autonomous direct search algorithm, which utilizes two contra-rotating DH PSFs encoded in orthogonal polarization states to enable monocular depth perception. Using a reconstruction algorithm that we developed, concurrent depth calculation and scene reconstruction with minimum distortion and high resolution in all three dimensions were demonstrated.https://doi.org/10.1515/nanoph-2023-0088depth sensingdouble-helixmetalensmetasurface |
| spellingShingle | Yang Fan Lin Hung-I Chen Peng Hu Juejun Gu Tian Monocular depth sensing using metalens Nanophotonics depth sensing double-helix metalens metasurface |
| title | Monocular depth sensing using metalens |
| title_full | Monocular depth sensing using metalens |
| title_fullStr | Monocular depth sensing using metalens |
| title_full_unstemmed | Monocular depth sensing using metalens |
| title_short | Monocular depth sensing using metalens |
| title_sort | monocular depth sensing using metalens |
| topic | depth sensing double-helix metalens metasurface |
| url | https://doi.org/10.1515/nanoph-2023-0088 |
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