JP2007101862A - 光反射板および面光源装置 - Google Patents
光反射板および面光源装置 Download PDFInfo
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- JP2007101862A JP2007101862A JP2005291077A JP2005291077A JP2007101862A JP 2007101862 A JP2007101862 A JP 2007101862A JP 2005291077 A JP2005291077 A JP 2005291077A JP 2005291077 A JP2005291077 A JP 2005291077A JP 2007101862 A JP2007101862 A JP 2007101862A
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Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/14—Arrangements of reflectors therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0284—Diffusing elements; Afocal elements characterized by the use used in reflection
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0808—Mirrors having a single reflecting layer
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133604—Direct backlight with lamps
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
【解決手段】 反射板12と、この反射板から山型に突出する反射性の山型仕切り板18とを有する光反射板において、上記山型仕切り板の頂部20に、この頂部から上方に突出する反射性の平板型仕切り板50を連設する。上記山型仕切り板18および平板型仕切り板50は、隣接する線状光源16同士の間に配置する。
【選択図】 図1
Description
(1)T≧(H+Q)/2−D/2
(2)θ<90°−arctan(Q/L)
(1)T≧(H+Q)/2−D/2
(2)θ<90°−arctan(Q/L)
条件(1)は、線状光源16の中心22と拡散板14の隣接する線状光源16の直上箇所26とを結ぶ線28と、隣接する線状光源16間の中央線30とが交わる位置から線状光源16の半径分の距離だけ低い位置32以上の位置に、平板型仕切り板50の頂部52が存在することを意味する。条件(2)は、線状光源16からの光の山型仕切り板18の裾部24における反射光(鏡面反射成分)34が、線状光源16の中心22より外側へ反射投影されないことを意味する。
実施例として、図1に示す構造を有する面光源装置を作製した。比較例1として、平板型仕切り板を設けず、かつ、山型仕切り板の高さを高くしたこと以外は、実施例と同様の面光源装置を作製した。比較例2として、平板型仕切り板を設けないこと以外は、実施例と同様の面光源装置を作製した。比較例3として、山型仕切り板および平板型仕切り板を設けないこと以外は、実施例と同様の面光源装置を作製した。
12 反射板
14 拡散板
16 線状光源
18 山型仕切り板
20 山型仕切り板の頂部
22 線状光源の中心
24 山型仕切り板の裾部
50 平板型仕切り板
52 平板型仕切り板の頂部
Claims (7)
- 反射板と、前記反射板から山型に突出する反射性の山型仕切り板とを有する光反射板において、前記反射性の山型仕切り板の頂部に、該頂部から上方に突出する反射性の平板型仕切り板を連設したことを特徴とする光反射板。
- 前記反射板、前記山型仕切り板および前記平板型仕切り板は、拡散反射率が95%以上の発泡シートからなることを特徴とする請求項1に記載の光反射板。
- 前記発泡シートは、内部に平均気泡径が光の波長以上で50μm以下の微細な気泡または気孔を有する熱可塑性樹脂からなることを特徴とする請求項2に記載の光反射板。
- 互いに平行に配設された反射板と拡散板との間に複数の線状光源が並列配置され、かつ、隣接する線状光源同士の間に前記反射板から山型に突出する反射性の山型仕切り板が設けられた面光源装置において、前記反射性の山型仕切り板の頂部に、該頂部から上方に突出する反射性の平板型仕切り板が連設されていることを特徴とする面光源装置。
- 前記反射板から前記平板型仕切り板の頂部までの垂直距離をT、前記反射板から前記線状光源の中心までの垂直距離をQ、前記反射板から前記拡散板までの垂直距離をH、前記線状光源の中心から前記山型仕切り板の裾部までの水平距離をL、前記線状光源の直径をD、前記山型仕切り板の裾野角をθとするとき、下記条件(1)および(2)を満たすことを特徴とする請求項4に記載の面光源装置。
(1)T≧(H+Q)/2−D/2
(2)θ<90°−arctan(Q/L) - 前記反射板、前記山型仕切り板および前記平板型仕切り板は、拡散反射率が95%以上の発泡シートからなることを特徴とする請求項4または5に記載の面光源装置。
- 前記発泡シートは、内部に平均気泡径が光の波長以上で50μm以下の微細な気泡または気孔を有する熱可塑性樹脂からなることを特徴とする請求項6に記載の面光源装置。
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005291077A JP4413842B2 (ja) | 2005-10-04 | 2005-10-04 | 面光源装置 |
TW095135230A TWI409545B (zh) | 2005-10-04 | 2006-09-22 | Light reflector and surface light source device |
ES06811036T ES2431633T3 (es) | 2005-10-04 | 2006-10-02 | Reflector de luz y fuente de luz plana |
US12/089,012 US7854525B2 (en) | 2005-10-04 | 2006-10-02 | Light reflector and planar light source |
CA2624136A CA2624136C (en) | 2005-10-04 | 2006-10-02 | Light reflector and planar light source |
CN200680036858A CN100588993C (zh) | 2005-10-04 | 2006-10-02 | 光反射板及面光源装置 |
KR1020087006435A KR20080053300A (ko) | 2005-10-04 | 2006-10-02 | 광반사판 및 면광원장치 |
PCT/JP2006/319688 WO2007040198A1 (ja) | 2005-10-04 | 2006-10-02 | 光反射板および面光源装置 |
EP06811036.0A EP1933179B1 (en) | 2005-10-04 | 2006-10-02 | Light reflector and planar light source |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005291077A JP4413842B2 (ja) | 2005-10-04 | 2005-10-04 | 面光源装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007101862A true JP2007101862A (ja) | 2007-04-19 |
JP4413842B2 JP4413842B2 (ja) | 2010-02-10 |
Family
ID=37906239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005291077A Expired - Fee Related JP4413842B2 (ja) | 2005-10-04 | 2005-10-04 | 面光源装置 |
Country Status (9)
Country | Link |
---|---|
US (1) | US7854525B2 (ja) |
EP (1) | EP1933179B1 (ja) |
JP (1) | JP4413842B2 (ja) |
KR (1) | KR20080053300A (ja) |
CN (1) | CN100588993C (ja) |
CA (1) | CA2624136C (ja) |
ES (1) | ES2431633T3 (ja) |
TW (1) | TWI409545B (ja) |
WO (1) | WO2007040198A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009020138A1 (ja) * | 2007-08-08 | 2009-02-12 | Sharp Kabushiki Kaisha | 照明装置および液晶表示装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011158555A1 (ja) * | 2010-06-15 | 2011-12-22 | シャープ株式会社 | 照明装置、表示装置、及びテレビ受信装置 |
US8888307B2 (en) * | 2011-11-18 | 2014-11-18 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Reflector plate and backlight system |
JP2013148853A (ja) * | 2011-12-20 | 2013-08-01 | Furukawa Electric Co Ltd:The | 光拡散部材及び光源ユニット |
CN105003893B (zh) * | 2015-08-19 | 2018-06-19 | 广州长嘉电子有限公司 | 自适应控制dled电视背光源的方法及系统 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS62131403A (ja) | 1985-12-02 | 1987-06-13 | 日産自動車株式会社 | 灯具 |
JPH044504A (ja) | 1990-04-19 | 1992-01-09 | Stanley Electric Co Ltd | リヤコンビネーションランプ |
JPH06302209A (ja) * | 1993-04-15 | 1994-10-28 | Keikoo Kk | 列設放射源用インボリュート形反射板 |
DE69624077T2 (de) * | 1995-06-23 | 2003-06-12 | Furukawa Electric Co Ltd | Lichtrefletkierende platte |
AU1305301A (en) | 1999-11-09 | 2001-06-06 | Omron Corporation | Reflecting member and light reflecting method |
JP2001297613A (ja) * | 2000-04-14 | 2001-10-26 | Koichi Matsui | 直下型照明装置 |
KR20020041431A (ko) * | 2000-07-11 | 2002-06-01 | 미우라 아키라 | 면 광원 장치 |
JP2002221613A (ja) | 2000-11-21 | 2002-08-09 | Yuka Denshi Co Ltd | 光反射シート及びこれを用いた面光源装置と液晶ディスプレイ装置 |
JP2003021726A (ja) | 2001-07-09 | 2003-01-24 | Yuka Denshi Co Ltd | 導光体及びこれを用いた面光源装置と液晶ディスプレイ装置 |
JP3803554B2 (ja) * | 2001-02-16 | 2006-08-02 | 株式会社日立製作所 | 液晶表示装置 |
JP2003015126A (ja) | 2001-07-02 | 2003-01-15 | Andes Intekku:Kk | 内面拡散半透過型反射板および内面拡散半透過型カラー液晶表示装置 |
JP3890005B2 (ja) | 2002-10-16 | 2007-03-07 | 古河電気工業株式会社 | 光反射板およびその製造方法 |
TW593923B (en) * | 2003-01-03 | 2004-06-21 | Au Optronics Corp | Backlight module |
TWI302215B (en) * | 2004-10-19 | 2008-10-21 | Chi Mei Optoelectronics Corp | Backlight unit |
-
2005
- 2005-10-04 JP JP2005291077A patent/JP4413842B2/ja not_active Expired - Fee Related
-
2006
- 2006-09-22 TW TW095135230A patent/TWI409545B/zh not_active IP Right Cessation
- 2006-10-02 KR KR1020087006435A patent/KR20080053300A/ko not_active Application Discontinuation
- 2006-10-02 EP EP06811036.0A patent/EP1933179B1/en not_active Expired - Fee Related
- 2006-10-02 ES ES06811036T patent/ES2431633T3/es active Active
- 2006-10-02 WO PCT/JP2006/319688 patent/WO2007040198A1/ja active Application Filing
- 2006-10-02 CN CN200680036858A patent/CN100588993C/zh not_active Expired - Fee Related
- 2006-10-02 US US12/089,012 patent/US7854525B2/en not_active Expired - Fee Related
- 2006-10-02 CA CA2624136A patent/CA2624136C/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009020138A1 (ja) * | 2007-08-08 | 2009-02-12 | Sharp Kabushiki Kaisha | 照明装置および液晶表示装置 |
US8237887B2 (en) | 2007-08-08 | 2012-08-07 | Sharp Kabushiki Kaisha | Illumination device and liquid crystal display device |
Also Published As
Publication number | Publication date |
---|---|
JP4413842B2 (ja) | 2010-02-10 |
TWI409545B (zh) | 2013-09-21 |
CN101278214A (zh) | 2008-10-01 |
EP1933179A4 (en) | 2012-06-27 |
US20090231842A1 (en) | 2009-09-17 |
TW200715006A (en) | 2007-04-16 |
ES2431633T3 (es) | 2013-11-27 |
KR20080053300A (ko) | 2008-06-12 |
EP1933179B1 (en) | 2013-10-02 |
EP1933179A1 (en) | 2008-06-18 |
CN100588993C (zh) | 2010-02-10 |
WO2007040198A1 (ja) | 2007-04-12 |
CA2624136A1 (en) | 2007-04-12 |
CA2624136C (en) | 2014-01-07 |
US7854525B2 (en) | 2010-12-21 |
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