Diffraction Efficiency Distribution of Output Grating in Holographic Waveguide Display System
Planar waveguide structure has benefits to expand the exit pupil of the near-eye display. To achieve a uniform output luminance within the expanded exit pupil, a specific distribution of diffractive efficiency (DE) should be set for the out-coupling grating. In this paper, a physical model is built...
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8413087/ |
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| _version_ | 1849418073477480448 |
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| author | Ao Liu Yuning Zhang Yishi Weng Zhongwen Shen Baoping Wang |
| author_facet | Ao Liu Yuning Zhang Yishi Weng Zhongwen Shen Baoping Wang |
| author_sort | Ao Liu |
| collection | DOAJ |
| description | Planar waveguide structure has benefits to expand the exit pupil of the near-eye display. To achieve a uniform output luminance within the expanded exit pupil, a specific distribution of diffractive efficiency (DE) should be set for the out-coupling grating. In this paper, a physical model is built to study the DE distribution of out-coupling grating with consideration of the whole field of view. Compared to the previous works, which only considered the central view angle, this model is more consistent with the actual situations to realize a uniform imaging output for a waveguide-based near-eye display system. Also, a planar waveguide with two holographic volume gratings as the in- and out-coupling gratings is fabricated to verify the proposed DE distribution. In experiments, a spatial light modulator is applied as the spatial luminance modulator, and the coupling grating with the proposed DE distribution is fabricated by the holographic interference exposure setup. The results show a high consistency between the simulation and the experiment. |
| format | Article |
| id | doaj-art-cce5fa1ebe93445e959e8dd93e9e3601 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-cce5fa1ebe93445e959e8dd93e9e36012025-08-20T03:32:32ZengIEEEIEEE Photonics Journal1943-06552018-01-0110411010.1109/JPHOT.2018.28567748413087Diffraction Efficiency Distribution of Output Grating in Holographic Waveguide Display SystemAo Liu0https://orcid.org/0000-0003-2893-1619Yuning Zhang1https://orcid.org/0000-0003-2213-2859Yishi Weng2Zhongwen Shen3https://orcid.org/0000-0003-3225-3259Baoping Wang4International Joint Research Laboratory for Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, ChinaInternational Joint Research Laboratory for Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, ChinaInternational Joint Research Laboratory for Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, ChinaInternational Joint Research Laboratory for Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, ChinaInternational Joint Research Laboratory for Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, ChinaPlanar waveguide structure has benefits to expand the exit pupil of the near-eye display. To achieve a uniform output luminance within the expanded exit pupil, a specific distribution of diffractive efficiency (DE) should be set for the out-coupling grating. In this paper, a physical model is built to study the DE distribution of out-coupling grating with consideration of the whole field of view. Compared to the previous works, which only considered the central view angle, this model is more consistent with the actual situations to realize a uniform imaging output for a waveguide-based near-eye display system. Also, a planar waveguide with two holographic volume gratings as the in- and out-coupling gratings is fabricated to verify the proposed DE distribution. In experiments, a spatial light modulator is applied as the spatial luminance modulator, and the coupling grating with the proposed DE distribution is fabricated by the holographic interference exposure setup. The results show a high consistency between the simulation and the experiment.https://ieeexplore.ieee.org/document/8413087/Waveguidesdiffraction and gratingsheads-up displays. |
| spellingShingle | Ao Liu Yuning Zhang Yishi Weng Zhongwen Shen Baoping Wang Diffraction Efficiency Distribution of Output Grating in Holographic Waveguide Display System IEEE Photonics Journal Waveguides diffraction and gratings heads-up displays. |
| title | Diffraction Efficiency Distribution of Output Grating in Holographic Waveguide Display System |
| title_full | Diffraction Efficiency Distribution of Output Grating in Holographic Waveguide Display System |
| title_fullStr | Diffraction Efficiency Distribution of Output Grating in Holographic Waveguide Display System |
| title_full_unstemmed | Diffraction Efficiency Distribution of Output Grating in Holographic Waveguide Display System |
| title_short | Diffraction Efficiency Distribution of Output Grating in Holographic Waveguide Display System |
| title_sort | diffraction efficiency distribution of output grating in holographic waveguide display system |
| topic | Waveguides diffraction and gratings heads-up displays. |
| url | https://ieeexplore.ieee.org/document/8413087/ |
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