| Presentation | 2020-01-22 [Poster Presentation] Evaluation of light transmission characteristics on ultrasound liquid crystal lenses Marina Fukui, Daisuke Koyama, Yuki Harada, Akira Emoto, Kentaro Nakamura, Mami Matsukawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Nematic liquid crystals that have high liquidity are widely used in optical devices such as liquid crystal displays because their molecular orientations can be controlled easily by electric field. In this report, we investigated a technique to control the molecular orientation of nematic liquid crystals using ultrasound and the application to the variable focus lens. The ultrasound optical lens consists of a liquid crystal layer with the thickness of 50 or 100 μm and a PZT ring transducer. The optical lens changed the focal length and acted as a convex lens under ultrasound excitation. The change of refractive index in the lens gives the variable-focus function. The lens with the LC layer of 100 μm enabled to expand the variable range of focusing. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | nematic liquid crystal / ultrasound / piezoelectric transducer / variable-focus lens |
| Paper # | US2019-81,EA2019-94 |
| Date of Issue | 2020-01-15 (US, EA) |
| Conference Information | |
| Committee | EA / US |
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| Conference Date | 2020/1/22(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Doshisha Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | [Joint Meeting on Acoustics and Ultrasonics Subsociety] Engineering/Electro Acoustics, Ultrasonics, and Related Topics |
| Chair | Kenichi Furuya(Oita Univ.) / Jun Kondo(Shizuoka Univ.) |
| Vice Chair | Suehiro Shimauchi(Kanazawa Inst. of Tech.) / Shigeto Takeoka(Shizuoka Inst. of Science and Tech.) / Shinichi Takeuchi(Toin Univ. of Yokohama) / Hikaru Miura(Nihon Univ.) |
| Secretary | Suehiro Shimauchi(NHK) / Shigeto Takeoka(Univ. of Tokyo) / Shinichi Takeuchi(Kanagawa Univ.) / Hikaru Miura(Doshisha Univ.) |
| Assistant | Keisuke Imoto(Ritsumeikan Univ.) / Daisuke Morikawa(Toyama Pref Univ.) / Mototaka Arakawa(Tohoku Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / Technical Committee on Ultrasonics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Evaluation of light transmission characteristics on ultrasound liquid crystal lenses |
| Sub Title (in English) | |
| Keyword(1) | nematic liquid crystal |
| Keyword(2) | ultrasound |
| Keyword(3) | piezoelectric transducer |
| Keyword(4) | variable-focus lens |
| 1st Author's Name | Marina Fukui |
| 1st Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 2nd Author's Name | Daisuke Koyama |
| 2nd Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 3rd Author's Name | Yuki Harada |
| 3rd Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 4th Author's Name | Akira Emoto |
| 4th Author's Affiliation | Tokushima University(Tokushima Univ.) |
| 5th Author's Name | Kentaro Nakamura |
| 5th Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech.) |
| 6th Author's Name | Mami Matsukawa |
| 6th Author's Affiliation | Doshisha University(Doshisha Univ.) |
| Date | 2020-01-22 |
| Paper # | US2019-81,EA2019-94 |
| Volume (vol) | vol.119 |
| Number (no) | US-374,EA-375 |
| Page | pp.pp.63-66(US), pp.63-66(EA), |
| #Pages | 4 |
| Date of Issue | 2020-01-15 (US, EA) |