Molecular Orientation Analysis of a Design Concept for Optical Properties of Liquid Crystal Microlenses.
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- Yanase Satoshi
- Department of Electrical and Electronic Engineering, Akita University, 1-1 Tegatagakuen-cho, Akita 010-8502, Japan Akita Research Institute of Advanced Technology (AIT), 4-21 Sanuki, Araya, Akita 010-1623, Japan
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- Ouchi Kazuhiro
- Akita Research Institute of Advanced Technology (AIT), 4-21 Sanuki, Araya, Akita 010-1623, Japan
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- Sato Susumu
- Department of Electrical and Electronic Engineering, Akita University, 1-1 Tegatagakuen-cho, Akita 010-8502, Japan
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抄録
The relationship between a liquid crystal (LC) molecular orientation state and the focusing properties of LC microlenses prepared using a pair of hole-patterned electrodes are studied. In particular, in order to obtain a large optical effect, molecular orientation and retardation distributions in the LC microlenses with a thick LC layer are investigated by experiments and simulations using the finite difference method (FDM). It is found that the LC microlens functions not only as a converging lens at a low applied voltage but also as a diverging lens at a high applied voltage. The focal length of the LC microlens with D/t of 1/1 is shorter than that with 1/2, where D is the pattern diameter and t is the LC thickness. Dependences of the converging and diverging properties on the D/t values are successfully explained by the FDM simulations of the LC molecular orientation. In the case of large D/t values, the middle region of LC layers mainly contributes to the effective refractive index distribution of the LC microlens. On the other hand, the contribution of both surface regions is dominant when D/t becomes small. It seems that the LC molecular orientation outside the circular-pattern affects effectively to that inside the region with decreasing D/t values.
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 40 (11), 6514-6521, 2001
The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1390001206251726208
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- NII論文ID
- 210000050251
- 110004043491
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- NII書誌ID
- AA10457675
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- ISSN
- 13474065
- 00214922
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- NDL書誌ID
- 5986271
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可