JP2014528092A - 偏向しない光の下で動作する最適化された構造を有する、ねじれ液晶に基づく位相素子の製作方法 - Google Patents
偏向しない光の下で動作する最適化された構造を有する、ねじれ液晶に基づく位相素子の製作方法 Download PDFInfo
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- JP2014528092A JP2014528092A JP2014525371A JP2014525371A JP2014528092A JP 2014528092 A JP2014528092 A JP 2014528092A JP 2014525371 A JP2014525371 A JP 2014525371A JP 2014525371 A JP2014525371 A JP 2014525371A JP 2014528092 A JP2014528092 A JP 2014528092A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
- G02F1/133784—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by rubbing
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1876—Diffractive Fresnel lenses; Zone plates; Kinoforms
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1396—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
- G02F1/1397—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell the twist being substantially higher than 90°, e.g. STN-, SBE-, OMI-LC cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/294—Variable focal length devices
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
Abstract
Description
― 以下の方程式:
を満足する補償角εを決定するステップであって、ここで、Nが
に最も近い整数であり、
ねじれ角がθ=2kπ−εであり、
Δn:液晶の複屈折、
d:液晶セルの厚さ、
λ:液晶セルを通過する光線の波長
であるステップと、
― ねじれ角:θ=2kπ−εを定義する、前記液晶分子の配向方向に沿って面の1つを摩擦するステップと
を含むことを特徴とする。
― 下記で定義される座標X及びZを有する楕円複屈折:
のようなポアンカレ球の上で表わされ得ることを想定している。
楕円複屈折の回転振幅は次のように定義される:
ここで、
n:結晶の指数
θ:ねじれ角
d:液晶セルの厚さ
λ:液晶セルを通過する光線の波長である。
― 全体のねじれに依存する回転がこれに続く。
によって表わされ、それは複屈折の振幅が2Nπに等しいのみならず、角度θもまた2kπ未満を残しつつ、2kπに出来る限り近付かなければならないことの双方を意味する。
すなわち:
であり、ここでNは整数であり、εは補償角:数Nの減少関数である。
εは整数Nが
に近いとき最小である。
従って、
となるような角度εを決定することが可能である。
ここでNは、
に最も近い整数である。
― その厚さが一定であり、その螺旋巻数が可変(2πに対する曲線C5a、4πに対する曲線C5b、6πに対する曲線C5c、8πに対する曲線C5d、10πに対する曲線C5e、12πに対する曲線C5f、及び14πに対する曲線C5g)であるセルと、
― その螺旋ピッチが一定であり、その厚さが可変(1μmに対する曲線C6a、2μmに対する曲線C6b、4μmに対する曲線C6c、6μmに対する曲線C6d、8μmに対する曲線C6e、10μmに対する曲線C6f)のセルに関して図示する。
この例によれば、可視範囲内で動作するレンズは、2つの制御電極の上に配列用の表面処理が施されている2つの制御電極の間に挿入された、Merck社からのMCL2062の参照番号を持つ液晶の層を含む。液晶の層の厚さは、キノフォームレンズ内の光によって体験される光路の変動が、問題の波長において2πであるように選定される。典型的には、この厚さはそれゆえ0.55μmの波長に対して0.55/(0.5Δn)に等しい。
Claims (4)
- 螺旋構造を有し、摩擦軸を持つ2つの配向層の間に挿入された液晶を含むセルと、前記セルに電圧を印加する手段とを備えた、少なくとも1つの波長(λ)で動作する位相素子を製作する方法であって、前記螺旋構造が螺旋巻数kを有し、前記液晶が2つの配向層の前記摩擦軸の間で定義される、ねじれ角θを有し、以下のステップ:
― 以下の方程式:
を満足する補償角εを決定するステップであって、ここで、Nが
に最も近い整数であり、
ねじれ角がθ=2kπ−εであり、ここで
Δn:前記液晶の複屈折、
d:液晶セルの厚さ、
λ:前記液晶セルを通過する光線の波長
であるステップと、
― 前記ねじれ角:θ=2kπ−εを定義する、前記液晶分子の配向方向に沿って面の1つを摩擦するステップと
を含むことを特徴とする方法及び手段。 - 前記位相素子がレンズであることを特徴とする、請求項1に記載の位相素子を製作する方法。
- 前記レンズがキノフォーム形状を有するレンズであることを特徴とする、請求項2に記載の位相素子を製作する方法。
- 少なくとも波長域[400nm、700nm]の中で動作し、前記補償角εの計算が475nmに近い波長において行われている、請求項1〜3のいずれか一項に記載の位相素子を製作する方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1157408A FR2979154B1 (fr) | 2011-08-18 | 2011-08-18 | Procede de realisation d'un dispositif de phase a base de cristal liquide twiste a structure optimisee fonctionnant en lumiere non polarisee |
FR1157408 | 2011-08-18 | ||
PCT/EP2012/064184 WO2013023869A1 (fr) | 2011-08-18 | 2012-07-19 | Procede de realisation d'un dispositif de phase a base de cristal liquide twiste a structure optimisee fonctionnant en lumiere non polarisee |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014528092A true JP2014528092A (ja) | 2014-10-23 |
JP6051495B2 JP6051495B2 (ja) | 2016-12-27 |
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JP2014525371A Expired - Fee Related JP6051495B2 (ja) | 2011-08-18 | 2012-07-19 | 偏向しない光の下で動作する最適化された構造を有する、ねじれ液晶に基づく位相素子の製作方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9612480B2 (ja) |
EP (1) | EP2745169B1 (ja) |
JP (1) | JP6051495B2 (ja) |
FR (1) | FR2979154B1 (ja) |
WO (1) | WO2013023869A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018150902A1 (ja) | 2017-02-17 | 2018-08-23 | ソニーセミコンダクタソリューションズ株式会社 | 撮像素子および電子機器 |
FR3101440B1 (fr) | 2019-09-27 | 2022-12-23 | Commissariat Energie Atomique | Structure diffusive pour source de lumière |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002357804A (ja) * | 2001-06-01 | 2002-12-13 | Nippon Hoso Kyokai <Nhk> | 回折型液晶レンズ及び多焦点回折型液晶レンズ |
JP2007073088A (ja) * | 2005-09-02 | 2007-03-22 | Asahi Glass Co Ltd | 液晶レンズおよび光ヘッド装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1001114A (fr) | 1949-12-09 | 1952-02-20 | Appareil pour centrer les vilebrequins de moteurs | |
JPH08166605A (ja) * | 1994-10-14 | 1996-06-25 | Sharp Corp | 液晶表示装置 |
US6791648B2 (en) * | 2001-03-15 | 2004-09-14 | Seiko Epson Corporation | Liquid crystal device, projection display device and, manufacturing method for substrate for liquid crystal device |
JP3864929B2 (ja) * | 2003-04-15 | 2007-01-10 | ソニー株式会社 | 液晶表示素子、画像表示装置 |
AR064986A1 (es) * | 2007-01-22 | 2009-05-06 | Pixeloptics Inc | Material cristalino liquido colesterico en lente electroactiva |
FR2957429B1 (fr) | 2010-03-12 | 2012-08-17 | Commissariat Energie Atomique | Modulateur de phase a base de cristal liquide a structure helicoidale |
KR101772153B1 (ko) * | 2010-03-17 | 2017-08-29 | 삼성디스플레이 주식회사 | 회절 렌즈를 이용한 영상 표시 장치 |
-
2011
- 2011-08-18 FR FR1157408A patent/FR2979154B1/fr not_active Expired - Fee Related
-
2012
- 2012-07-19 EP EP12737287.8A patent/EP2745169B1/fr not_active Not-in-force
- 2012-07-19 WO PCT/EP2012/064184 patent/WO2013023869A1/fr active Application Filing
- 2012-07-19 JP JP2014525371A patent/JP6051495B2/ja not_active Expired - Fee Related
- 2012-07-19 US US14/239,252 patent/US9612480B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002357804A (ja) * | 2001-06-01 | 2002-12-13 | Nippon Hoso Kyokai <Nhk> | 回折型液晶レンズ及び多焦点回折型液晶レンズ |
JP2007073088A (ja) * | 2005-09-02 | 2007-03-22 | Asahi Glass Co Ltd | 液晶レンズおよび光ヘッド装置 |
Also Published As
Publication number | Publication date |
---|---|
US9612480B2 (en) | 2017-04-04 |
WO2013023869A1 (fr) | 2013-02-21 |
EP2745169B1 (fr) | 2016-11-09 |
FR2979154A1 (fr) | 2013-02-22 |
EP2745169A1 (fr) | 2014-06-25 |
JP6051495B2 (ja) | 2016-12-27 |
US20140218672A1 (en) | 2014-08-07 |
FR2979154B1 (fr) | 2014-04-11 |
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