TOP > 外国特許検索 > Liquid crystal lens in which a voltage imparts optimal first-stage optical properties to the liquid crystal lens by influencing a liquid crystal layer

Liquid crystal lens in which a voltage imparts optimal first-stage optical properties to the liquid crystal lens by influencing a liquid crystal layer

外国特許コード F110005588
整理番号 RJ008P18WO
掲載日 2011年9月8日
出願国 アメリカ合衆国
出願番号 67879407
公報番号 20070139333
公報番号 8194228
出願日 平成19年2月26日(2007.2.26)
公報発行日 平成19年6月21日(2007.6.21)
公報発行日 平成24年6月5日(2012.6.5)
優先権データ
  • 特願2004-246860 (2004.8.26) JP
  • 特願2005-052626 (2005.2.28) JP
  • 2005WO-JP15464 (2005.8.25) WO
発明の名称 (英語) Liquid crystal lens in which a voltage imparts optimal first-stage optical properties to the liquid crystal lens by influencing a liquid crystal layer
発明の概要(英語) (US8194228)
The focal distance can be greatly changed by performing an electrical control in an optical element.
The optical element comprises a first substrate having a first electrode, a second substrate, a second electrode arranged outside the second substrate, and a liquid crystal layer provided between the first substrate and the second substrate and constituted by liquid crystal molecules oriented.
A first voltage is applied between the first electrode and the second electrode, thereby controlling the orientation of the liquid crystal molecules, whereby the optical element operates.
A third electrode is provided on an insulating layer and outside the second electrode.
A second voltage independent of the first voltage is applied to the third electrode, thereby changing the optical properties.
特許請求の範囲(英語) [claim1]
1. A liquid crystal lens, comprising: a first substrate having a first electrode;
a second substrate which faces the first electrode of the first substrate in parallel;
a second electrode arranged outside the second substrate, the outside being an opposite side of the first substrate, and the second electrode having a hole;
a liquid crystal layer provided between the first substrate and the second substrate and constituted by oriented liquid crystal molecules;
an insulating layer attached to the second electrode and an inside area of the hole on the second substrate;
a third electrode, which is transparent, being arranged and in contact with the insulating layer and covering the hole;
a first voltage-applying unit configured to apply a first voltage between the first electrode and the second electrode to control an orientation of the liquid crystal molecules; and
a second voltage-applying unit configured to apply a second voltage between the first electrode and the third electrode to control the orientation of the liquid crystal molecules, the second voltage being independent of the first voltage, wherein
the first and second substrates and the liquid crystal layer have parallel and planar structures,
the second substrate does not include a hole,
the first and second substrates and the third electrode are not deformed even when the focus is to be changed,
an opening portion of the liquid crystal lens corresponds to the hole, and
the first voltage has a fixed value that imparts optimal first-stage optical properties to the liquid crystal lens by influencing the liquid crystal layer, and the second voltage is changed to vary second-stage optical properties of the liquid crystal lens by influencing the same liquid crystal layer.
[claim2]
2. A liquid crystal lens, comprising: a first substrate having a first electrode;
a second substrate which faces the first electrode of the first substrate in parallel;
a second electrode arranged outside the second substrate, the outside being an opposite side of the first substrate, and the second electrode having a hole;
a liquid crystal layer provided between the first substrate and the second substrate and constituted by oriented liquid crystal molecules;
an insulating layer attached to the second electrode and an inside area of the hole on the second substrate;
a third electrode, which is transparent, being arranged and in contact with the insulating layer and covering the hole;
a first voltage-applying unit configured to apply a first voltage between the first electrode and the second electrode to control an orientation of the liquid crystal molecules; and
a second voltage-applying unit configured to apply a second voltage between the first electrode and the third electrode to control the orientation of the liquid crystal molecules, the second voltage being independent of the first voltage, wherein
the first and second substrates and the liquid crystal layer have parallel and planar structures,
the second substrate does not include a hole,
the first and second substrates and the third electrode are not deformed even when the focus is to be changed,
an opening portion of the liquid crystal lens corresponds to the hole, and
the second voltage has a fixed value that imparts optimal first-stage optical properties to the liquid crystal lens by influencing the liquid crystal layer, and the first voltage is changed to vary second-stage optical properties of the liquid crystal lens by influencing the same liquid crystal layer.
  • 発明者/出願人(英語)
  • SATO SUSUMU
  • YE MAO
  • AKITA CENTER TO IMPLEMENT VIRGOROUS ENTERPRISES
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
米国特許分類/主・副
  • G02F001/1343A
  • G02F001/29
  • S02F001/29M
  • S02F201/12
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