JP4291141B2 - テーパ導波路を用いたフラットパネルディスプレイ - Google Patents
テーパ導波路を用いたフラットパネルディスプレイ Download PDFInfo
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- JP4291141B2 JP4291141B2 JP2003518193A JP2003518193A JP4291141B2 JP 4291141 B2 JP4291141 B2 JP 4291141B2 JP 2003518193 A JP2003518193 A JP 2003518193A JP 2003518193 A JP2003518193 A JP 2003518193A JP 4291141 B2 JP4291141 B2 JP 4291141B2
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- 230000003287 optical effect Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000000644 propagated effect Effects 0.000 claims 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000006117 anti-reflective coating Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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
- G02F1/015—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction
- G02F1/025—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction in an optical waveguide structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
- G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S385/00—Optical waveguides
- Y10S385/901—Illuminating or display apparatus
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Engineering & Computer Science (AREA)
- Projection Apparatus (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Optical Integrated Circuits (AREA)
Description
図7は、本発明により考慮された一般的な概略図を示す。プロジェクタ6(もし装置が後ろ側で操作されればカメラ、若しくは照明の領域を生成するための単なる点光源)は、長方形の厚板導波路2の端部へ画素アレイからなる画像を形成するための光を出射(又は受承)し、該厚板導波路2内では光は主たる面を交互に離れるように反射することにより伝播する。この厚板は通常は平坦な平行した面を有しているが、該面を必ずしも有する必要はない。光は、伝播するにつれて、厚板の面内であり、かつ伝播方向と垂直な横方向に広がり、遠い方の端部では厚板全体の幅まで到達するように広がる。従って、画像は、幅方向に拡大したようになる。そこで、円筒状のレンズでコリメートされ、等しい幅を有するがプロジェクタから遠ざかる方向にその高さが先細りの状態となる厚板導波路1の先細りしていないほうの端部に進入する。ここでもまた、内部反射するが、例えばディスプレイを形成するために、シュネルの法則により付与された臨界角となり出射するまで増大する角度(より急な角度)にて内部反射する。この原理は、国際出願公開第WO/72037号に記載されている。
Claims (11)
- 厚板の形状である入力導波路(2)とテーパ状の出力導波路(1)とを含むテーパ導波路光学装置において、
光は、該入力導波路(2)の一方の端部に入射し、該導波路に沿って跳ね返り、かつ他方の端部まで伝播し、前記出力導波路(1)において、前記入力導波路からの光は該出力導波路の入力端部にて種々の入射角にて受承され、該出力導波路内を全反射により所定の距離を伝播され、該光は該出力導波路の面のうちの一方の面における入射角が臨界角を超えた場合に該出力導波路の該一方の面を超えて出射され、前記出力導波路の厚みプロファイルは、異なる入射角にて入射した光が、前記二つの導波路内を通過して出力導波路から出射されるまでの間に、同じ回数だけ跳ね返るように形成されている、テーパ導波路光学装置。 - 前記入力導波路(2)は平坦な直方体からなる請求項1に記載の光学装置。
- 前記二つの導波路が同じ材料から形成される請求項1又は2に記載の光学装置。
- コリメート要素(5)を更に含み、該コリメート要素(5)は前記入力導波路と前記出力導波路との間に光を指向し、それにより該光がほぼ平行に進行するとともに該出力導波路の面内において解像される請求項1乃至3のいずれか一項に記載の光学装置。
- 出現する光を広げて視角を増大するために前記出力導波路を覆うスクリーンを更に含む請求項1乃至4のいずれか一項に記載の光学装置。
- 前記スクリーンは前記出現する光線を通過させるのに適した角度に傾けられたルーバー(8)と、該ルーバー間に配置された散乱要素(9)とからなる請求項5に記載の光学装置。
- ディスプレイを形成する目的にて前記入力導波路に画像を照射するために配置されたビデオプロジェクタ(6)を含む請求項1乃至6のいずれか一項に記載の光学装置。
- 請求項1乃至6のいずれか一項に記載の光学装置は、点光源を含み、それにより該装置が平坦な光源として作用する装置。
- 前記入力導波路及び出力導波路(1,2)は一方が他方に重なるように折り畳まれている請求項1乃至8のいずれか一項に記載の光学装置。
- 厚板の形状である入力導波路(2)とテーパ状の出力導波路(1)とを含むテーパ導波路光学装置を製造するための方法において、
光は、該入力導波路(2)の一方の端部に入射し、該導波路に沿って跳ね返り、かつ他方の端部まで伝播し、前記出力導波路において、前記入力導波路からの光は該出力導波路の幅厚側の端部にて種々の入射角にて受承され、該導波路内にて一定の距離を伝播され、該光は該テーパ内における角度が臨界角を超えた場合に該出力導波路の一方の表面を超えて光が出射され、
前記出力導波路の厚みは、前記入力導波路内における跳ね返り数の最大値から開始して、該入力導波路内における該跳ね返り数の最大値から2ずつ減少した各跳ね返り数に対して計算され、かつ出力導波路の幅厚側の端部からの対応する距離は、該出力導波路内において光が減少した分の跳ね返りを確実に受けるように計算されており、それにより、跳ね返り数の合計は確実に一定に維持され、出力導波路の厚みと該出力導波路の幅厚側の端部からの距離との計算は、該出力導波路の厚みがゼロになるまで前記入力導波路内における前記跳ね返り数の最大値から2ずつ減少した各跳ね返り数に対して繰り返され、その結果に従って出力導波路が形成される、方法。 - 厚板の形状である入力導波路(2)とテーパ状の出力導波路(1)とを含むテーパ導波路光学装置を製造するための方法において、
光は、該入力導波路(2)の一方の端部に入射し、該導波路に沿って跳ね返り、かつ他方の端部まで伝播し、前記出力導波路において、前記入力導波路からの光は該出力導波路の幅厚側の端部にて種々の入射角にて受承され、該導波路内にて一定の距離を伝播され、該光は該テーパ内における角度が臨界角を超えた場合に該出力導波路の一方の表面を超えて光が出射され、
前記出力導波路の厚みは、前記入力導波路内における跳ね返り数の最大値から開始して、該入力導波路内における該跳ね返り数の最大値から2ずつ減少した各跳ね返り数に対して計算され、かつ出力導波路の幅厚側の端部からの対応する距離は、該出力導波路内において光が減少した分の跳ね返りを確実に受けるように計算されており、それにより、跳ね返り数の合計は確実に一定に維持され、出力導波路の厚みと該出力導波路の幅厚側の端部からの距離との計算は、該出力導波路の厚みがゼロになるまで前記入力導波路内における前記跳ね返り数の最大値から2ずつ減少した各跳ね返り数に対して繰り返され、その結果に従って出力導波路の鋳型が形成される、方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0118866.3A GB0118866D0 (en) | 2001-08-02 | 2001-08-02 | Shaped taper flat panel display |
PCT/GB2002/003578 WO2003013151A2 (en) | 2001-08-02 | 2002-08-01 | Flat-panel display using tapered waveguide |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2004537766A JP2004537766A (ja) | 2004-12-16 |
JP2004537766A5 JP2004537766A5 (ja) | 2005-09-15 |
JP4291141B2 true JP4291141B2 (ja) | 2009-07-08 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2003518193A Expired - Lifetime JP4291141B2 (ja) | 2001-08-02 | 2002-08-01 | テーパ導波路を用いたフラットパネルディスプレイ |
Country Status (10)
Country | Link |
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US (1) | US7410286B2 (ja) |
EP (1) | EP1417843B1 (ja) |
JP (1) | JP4291141B2 (ja) |
KR (1) | KR100871521B1 (ja) |
CN (1) | CN1330189C (ja) |
AU (1) | AU2002317406A1 (ja) |
DE (1) | DE60208049T2 (ja) |
GB (1) | GB0118866D0 (ja) |
TW (1) | TWI222536B (ja) |
WO (1) | WO2003013151A2 (ja) |
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KR100871521B1 (ko) | 2008-12-05 |
TWI222536B (en) | 2004-10-21 |
WO2003013151A2 (en) | 2003-02-13 |
DE60208049D1 (de) | 2006-01-19 |
US20040196665A1 (en) | 2004-10-07 |
DE60208049T2 (de) | 2006-08-03 |
KR20040035697A (ko) | 2004-04-29 |
CN1539245A (zh) | 2004-10-20 |
AU2002317406A1 (en) | 2003-02-17 |
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