JP6199761B2 - 面状照明装置 - Google Patents
面状照明装置 Download PDFInfo
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- JP6199761B2 JP6199761B2 JP2014017484A JP2014017484A JP6199761B2 JP 6199761 B2 JP6199761 B2 JP 6199761B2 JP 2014017484 A JP2014017484 A JP 2014017484A JP 2014017484 A JP2014017484 A JP 2014017484A JP 6199761 B2 JP6199761 B2 JP 6199761B2
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- Prior art keywords
- light
- incident
- guide plate
- illumination device
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- 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0031—Reflecting element, sheet or layer
-
- 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces
- G02B6/0021—Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
-
- 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
- Led Device Packages (AREA)
- Optical Couplings Of Light Guides (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
Description
Δxyi=√((x0−xi)2+(y0−yi)2)
で算出されるxy色度図上の距離Δxyiのうちの最大値である。このように定義された入光色度差が大きいほど、入光色むらが大きいといえる。
本実施形態では、3つのLED11が、その発光面12を導光板21の後述する入光面22に向けた状態で、互いに所定の間隔を置きながら入光面22に沿って配置されている(図2参照)。
Claims (8)
- 白色光を発光する光源と、該光源が配置される端面である入光面、および、該入光面から入射した光を一方の主面である出射面から面状に出射させる出射部を有する導光板と、を備える面状照明装置において、
前記導光板は、前記入光面と前記出射部との間に、傾斜面を含み前記入光面側から前方に向かって厚さが漸減する入光楔部を有し、前記入光楔部と前記出射部との境界の近傍の、前記出射面側または前記出射面の反対面側の少なくともいずれか一方に、青色光の反射率が他の色光の反射率よりも大きい青色光反射手段が、該青色光反射手段で反射した青色光が前記導光板の前記出射部の前記入光楔部寄りの領域から出射するように配置されていることを特徴とする面状照明装置。 - 前記青色光反射手段が、前記入光楔部と前記出射部との境界を跨ぐように配置されていることを特徴とする請求項1に記載の面状照明装置。
- 前記青色光反射手段が、前記光源を実装する回路基板の前記導光板を向く面に設けられていることを特徴とする請求項1または2に記載の面状照明装置。
- 前記青色光反射手段が、前記傾斜面の傾斜方向に傾斜して配置されている部分を含むことを特徴とする請求項1から3のいずれか1項に記載の面状照明装置。
- 前記入光楔部の前記傾斜面側に、前記光源を実装する回路基板を配置する台座が設けられていることを特徴とする請求項1から4のいずれか1項に記載の面状照明装置。
- 前記光源は、発光素子と、該発光素子が発光する光を受けて発光する蛍光体と、を含むことを特徴とする請求項1から5のいずれか1項に記載の面状照明装置。
- 前記発光素子が、青色光を発光する青色発光ダイオードであり、前記蛍光体が、黄色光を発光する黄色蛍光体であることを特徴とする請求項6に記載の面状照明装置。
- 前記蛍光体が、前記発光素子を覆う封止体に分散されていることを特徴とする請求項6または7に記載の面状照明装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014017484A JP6199761B2 (ja) | 2014-01-31 | 2014-01-31 | 面状照明装置 |
US14/564,627 US9465157B2 (en) | 2014-01-31 | 2014-12-09 | Spread illuminating apparatus |
CN201520068934.9U CN204513001U (zh) | 2014-01-31 | 2015-01-30 | 面状照明装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014017484A JP6199761B2 (ja) | 2014-01-31 | 2014-01-31 | 面状照明装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015144096A JP2015144096A (ja) | 2015-08-06 |
JP6199761B2 true JP6199761B2 (ja) | 2017-09-20 |
Family
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Family Applications (1)
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JP2014017484A Active JP6199761B2 (ja) | 2014-01-31 | 2014-01-31 | 面状照明装置 |
Country Status (3)
Country | Link |
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US (1) | US9465157B2 (ja) |
JP (1) | JP6199761B2 (ja) |
CN (1) | CN204513001U (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102174819B1 (ko) * | 2014-06-25 | 2020-11-06 | 엘지디스플레이 주식회사 | 표시장치 |
JP6220765B2 (ja) * | 2014-11-25 | 2017-10-25 | ミネベアミツミ株式会社 | 面状照明装置 |
US9618690B2 (en) * | 2015-07-10 | 2017-04-11 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Liquid crystal display device |
CN106568029B (zh) * | 2015-10-09 | 2020-10-30 | 瑞仪光电(苏州)有限公司 | 背光模组及显示装置 |
JP6321697B2 (ja) * | 2016-02-12 | 2018-05-09 | ミネベアミツミ株式会社 | 面状照明装置 |
CN109073172A (zh) * | 2016-05-06 | 2018-12-21 | 夏普株式会社 | 背光装置及具备背光装置的显示装置 |
CN106707616A (zh) * | 2016-12-23 | 2017-05-24 | 上海创功通讯技术有限公司 | 一种背光模组及显示装置 |
JP6709768B2 (ja) | 2017-09-28 | 2020-06-17 | ミネベアミツミ株式会社 | 面状照明装置 |
CN110794614B (zh) * | 2018-08-03 | 2022-10-25 | 日亚化学工业株式会社 | 发光模块 |
KR102606463B1 (ko) * | 2019-08-01 | 2023-11-29 | 레이아 인코포레이티드 | 흡수 시준기를 이용하는 시준 백라이트, 전자 디스플레이 및 방법 |
CN114019723A (zh) * | 2021-11-12 | 2022-02-08 | 惠州视维新技术有限公司 | 背光模组、显示装置以及背光模组的制作方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005347010A (ja) | 2004-06-01 | 2005-12-15 | Minebea Co Ltd | 面状照明装置 |
JP4765905B2 (ja) * | 2006-11-17 | 2011-09-07 | 日亜化学工業株式会社 | 面状発光装置及びその製造方法 |
US20080175022A1 (en) * | 2007-01-22 | 2008-07-24 | Takuro Sugiura | Illuminating unit |
KR101415566B1 (ko) * | 2007-10-29 | 2014-07-04 | 삼성디스플레이 주식회사 | 표시 장치 |
JP2010218972A (ja) * | 2009-03-18 | 2010-09-30 | Minebea Co Ltd | 面状照明装置 |
TWI402571B (zh) * | 2009-04-22 | 2013-07-21 | Advanced Optoelectronic Tech | 具有光線補色區域之背光模組 |
US8118465B2 (en) * | 2009-10-30 | 2012-02-21 | Minebea Co., Ltd. | Spread illuminating apparatus |
JP5434744B2 (ja) * | 2010-03-30 | 2014-03-05 | ウシオ電機株式会社 | 線状光源装置 |
KR101261461B1 (ko) * | 2010-07-14 | 2013-05-10 | 엘지이노텍 주식회사 | 액정 표시 장치 |
JP2012094283A (ja) | 2010-10-25 | 2012-05-17 | Minebea Co Ltd | 面状照明装置 |
KR101851726B1 (ko) * | 2011-11-23 | 2018-04-24 | 엘지이노텍 주식회사 | 표시장치 |
JP2013114876A (ja) * | 2011-11-28 | 2013-06-10 | Sharp Corp | 照明装置、及びそれを備えた液晶表示装置 |
JP5893913B2 (ja) * | 2011-12-22 | 2016-03-23 | ミネベア株式会社 | 面状照明装置 |
TW201445197A (zh) * | 2013-05-20 | 2014-12-01 | Hon Hai Prec Ind Co Ltd | 導光元件及背光模組 |
-
2014
- 2014-01-31 JP JP2014017484A patent/JP6199761B2/ja active Active
- 2014-12-09 US US14/564,627 patent/US9465157B2/en active Active
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2015
- 2015-01-30 CN CN201520068934.9U patent/CN204513001U/zh active Active
Also Published As
Publication number | Publication date |
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US20150219824A1 (en) | 2015-08-06 |
CN204513001U (zh) | 2015-07-29 |
US9465157B2 (en) | 2016-10-11 |
JP2015144096A (ja) | 2015-08-06 |
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