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3 September 2019 Compact coherent backlight unit for portable holographic display
Chil-Sung Choi, Sung-Hoon Lee, Hoon Song, Jungkwuen An, Alexander Morozov, German Dubinin, Yunhee Kim, Young Kim, Kang-Hee Won, Yongkyu Kim, Myungjae Jeon, Bongsu Shin, Chang-Kun Lee, Wontaek Seo, Jae-Seung Chung, Juwon Seo, Yun-Tae Kim, Geeyoung Sung, Sunil Kim, Hong-Seok Lee
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Proceedings Volume 11089, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVI; 1108902 (2019) https://doi.org/10.1117/12.2525214
Event: SPIE Nanoscience + Engineering, 2019, San Diego, California, United States
Abstract
The coherent backlight unit (C-BLU) using a diffractive optical element (DOE) for full-color flat-panel holographic display is proposed. The coherent backlight unit is composed of two diffractive optical elements (DOEs) that are imprinted on the same glass substrate. The illumination area of the backlight is 250 mm x 130 mm and the thickness is 2.2 mm, which is slim compared to other conventional coherent backlight units for holographic display systems. In experiments, the total efficiency is measured as 0.8% at red (638 nm), 3.9% at green (520nm), and 3.4% of blue (473 nm). As a result, we could get the 10 inch full color holographic display with 4k resolution.
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Chil-Sung Choi, Sung-Hoon Lee, Hoon Song, Jungkwuen An, Alexander Morozov, German Dubinin, Yunhee Kim, Young Kim, Kang-Hee Won, Yongkyu Kim, Myungjae Jeon, Bongsu Shin, Chang-Kun Lee, Wontaek Seo, Jae-Seung Chung, Juwon Seo, Yun-Tae Kim, Geeyoung Sung, Sunil Kim, and Hong-Seok Lee "Compact coherent backlight unit for portable holographic display", Proc. SPIE 11089, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVI, 1108902 (3 September 2019); https://doi.org/10.1117/12.2525214
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KEYWORDS
Holography
Semiconducting wafers
Waveguides
Silicon
Diffraction gratings
Nanoimprint lithography
Optical design
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