JP2018190691A - 面状照明装置 - Google Patents
面状照明装置 Download PDFInfo
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- JP2018190691A JP2018190691A JP2017095085A JP2017095085A JP2018190691A JP 2018190691 A JP2018190691 A JP 2018190691A JP 2017095085 A JP2017095085 A JP 2017095085A JP 2017095085 A JP2017095085 A JP 2017095085A JP 2018190691 A JP2018190691 A JP 2018190691A
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- Prior art keywords
- light
- guide plate
- attenuation
- light guide
- illumination device
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- 238000000605 extraction Methods 0.000 claims abstract description 21
- 238000005286 illumination Methods 0.000 claims description 39
- 230000002238 attenuated effect Effects 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
-
- 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
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
-
- 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
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- 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
- G02B6/0066—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 characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
-
- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/009—Positioning aspects of the light source in the package
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
【解決手段】実施形態に係る面状照明装置は、導光板と、枠部材と、減衰部とを備える。導光板は、光取出面と、光取出面と交差する側面であって光源からの光が入射する入光側面とを有する。枠部材は、導光板の入光側面以外の側面に沿って、側面と離間して設けられる。減衰部は、入光側面以外の少なくとも一の側面側に設けられ、側面から出る光を減衰する。
【選択図】図2
Description
2 光源
3 導光板
3a 入光側面
3b 出射面
3c,3e,3f 側面
3d 反対面
10,6c,6d,6e 遮光部
20,20a〜20f 減衰部
4 反射部
5a 拡散シート
5b プリズムシート
6 フレーム
Claims (7)
- 光取出面と、前記光取出面と交差する側面であって光源からの光が入射する入光側面とを有する導光板と、
前記導光板の前記入光側面以外の側面に沿うとともに、前記側面と離間して設けられる枠部材と、
前記入光側面以外の少なくとも一の側面側に設けられ、当該側面から出る光を減衰する減衰部と
を備える面状照明装置。 - 前記枠部材は、
前記入光側面以外の少なくとも一の側面に対向する側壁部と、前記側壁部における前記光取出面側の端部から、前記側壁部と前記側壁部に対向する前記導光板の側面との間まで延伸する延伸部とを有し、
前記減衰部は、
前記入光側面以外の少なくとも一の側面と前記枠部材の前記側壁部との間に設けられる
請求項1に記載の面状照明装置。 - 前記減衰部は、
前記入光側面以外の少なくとも一の側面側に設けられる光吸収部材である
請求項1または2に記載の面状照明装置。 - 前記枠部材は、
前記導光板の前記光取出面の裏面側に底壁部を有し、
前記減衰部は、
前記枠部材の前記底壁部に設けられる
請求項3に記載の面状照明装置。 - 前記光取出面の裏面に沿うとともに、前記入光側面以外の少なくとも一の側面から当該側面に対向する前記枠部材の側壁部側へ突出して設けられ、前記光を反射する反射部をさらに備え、
前記減衰部は、
前記反射部の突出した部位に設けられる
請求項3に記載の面状照明装置。 - 前記減衰部は、
前記入光側面以外の少なくとも一の側面の少なくとも一部を覆うようにして設けられる
請求項3〜5のいずれか1つに記載の面状照明装置。 - 前記光取出面の裏面側かつ前記入光側面以外の少なくとも一の側面よりも内側に設けられ、前記光を前記導光板側へ反射する反射部をさらに備え、
前記枠部材は、
前記光取出面の裏面側に底壁部を有し、
前記減衰部は、
前記枠部材の前記底壁部のうち、前記反射部と重ならない領域である
請求項1に記載の面状照明装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017095085A JP6669691B2 (ja) | 2017-05-11 | 2017-05-11 | 面状照明装置 |
US15/968,926 US10274662B2 (en) | 2017-05-11 | 2018-05-02 | Planar illumination apparatus |
CN201810442272.5A CN108870197B (zh) | 2017-05-11 | 2018-05-10 | 面状照明装置 |
CN201820699306.4U CN208268885U (zh) | 2017-05-11 | 2018-05-10 | 面状照明装置 |
Applications Claiming Priority (1)
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JP2017095085A JP6669691B2 (ja) | 2017-05-11 | 2017-05-11 | 面状照明装置 |
Publications (2)
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JP2018190691A true JP2018190691A (ja) | 2018-11-29 |
JP6669691B2 JP6669691B2 (ja) | 2020-03-18 |
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JP2017095085A Active JP6669691B2 (ja) | 2017-05-11 | 2017-05-11 | 面状照明装置 |
Country Status (3)
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US (1) | US10274662B2 (ja) |
JP (1) | JP6669691B2 (ja) |
CN (2) | CN208268885U (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020161358A (ja) * | 2019-03-27 | 2020-10-01 | パナソニックIpマネジメント株式会社 | 照明装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6669691B2 (ja) * | 2017-05-11 | 2020-03-18 | ミネベアミツミ株式会社 | 面状照明装置 |
JP7250667B2 (ja) * | 2019-12-03 | 2023-04-03 | ミネベアミツミ株式会社 | 面状照明装置 |
Citations (3)
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JP2001084821A (ja) * | 1999-09-10 | 2001-03-30 | Enplas Corp | 反射シート、面光源装置及び該面光源装置を備えた画像表示装置 |
WO2014069298A1 (ja) * | 2012-10-30 | 2014-05-08 | シャープ株式会社 | 照明装置、及び表示装置 |
US20170123145A1 (en) * | 2015-10-30 | 2017-05-04 | Lg Display Co., Ltd. | Display device |
Family Cites Families (16)
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JP3219695B2 (ja) * | 1996-07-09 | 2001-10-15 | 富士通株式会社 | バックライト装置 |
CN1892345A (zh) * | 2005-07-05 | 2007-01-10 | 久禾光电股份有限公司 | 可消除亮点的发光模组 |
JP4807205B2 (ja) * | 2006-09-19 | 2011-11-02 | オムロン株式会社 | 面光源装置 |
JP2012014909A (ja) * | 2010-06-30 | 2012-01-19 | Omron Corp | 面光源装置 |
US8585237B2 (en) * | 2011-05-27 | 2013-11-19 | Lg Innotek Co., Ltd. | Lighting module |
JP5777443B2 (ja) * | 2011-08-05 | 2015-09-09 | ミネベア株式会社 | 面状照明装置 |
JP6181389B2 (ja) * | 2012-04-17 | 2017-08-16 | 株式会社エンプラス | 光束制御部材、発光装置および照明装置 |
KR20140003049A (ko) * | 2012-06-29 | 2014-01-09 | 엘지이노텍 주식회사 | 조명장치 및 상기 조명장치를 구비한 액정표시장치 |
JP6190790B2 (ja) * | 2014-10-15 | 2017-08-30 | ミネベアミツミ株式会社 | 面状照明装置 |
JP2016085803A (ja) | 2014-10-23 | 2016-05-19 | ミネベア株式会社 | 面状照明装置、液晶表示装置及びその組立方法 |
US10488582B2 (en) * | 2016-06-24 | 2019-11-26 | Minebea Mitsumi Inc. | Planar illumination apparatus |
JP6408516B2 (ja) * | 2016-07-01 | 2018-10-17 | ミネベアミツミ株式会社 | 面状照明装置及び基板 |
US10345502B2 (en) * | 2016-07-14 | 2019-07-09 | Minebea Mitsumi Inc. | Planar illumination apparatus with light guide plate having a cutout |
JP6487885B2 (ja) * | 2016-09-08 | 2019-03-20 | ミネベアミツミ株式会社 | 面状照明装置 |
US10627568B2 (en) * | 2016-12-13 | 2020-04-21 | Minebea Mitsumi Inc. | Planar illumination device and method of manufacturing planar illumination device |
JP6669691B2 (ja) * | 2017-05-11 | 2020-03-18 | ミネベアミツミ株式会社 | 面状照明装置 |
-
2017
- 2017-05-11 JP JP2017095085A patent/JP6669691B2/ja active Active
-
2018
- 2018-05-02 US US15/968,926 patent/US10274662B2/en active Active
- 2018-05-10 CN CN201820699306.4U patent/CN208268885U/zh active Active
- 2018-05-10 CN CN201810442272.5A patent/CN108870197B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001084821A (ja) * | 1999-09-10 | 2001-03-30 | Enplas Corp | 反射シート、面光源装置及び該面光源装置を備えた画像表示装置 |
WO2014069298A1 (ja) * | 2012-10-30 | 2014-05-08 | シャープ株式会社 | 照明装置、及び表示装置 |
US20170123145A1 (en) * | 2015-10-30 | 2017-05-04 | Lg Display Co., Ltd. | Display device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020161358A (ja) * | 2019-03-27 | 2020-10-01 | パナソニックIpマネジメント株式会社 | 照明装置 |
JP7262017B2 (ja) | 2019-03-27 | 2023-04-21 | パナソニックIpマネジメント株式会社 | 照明装置 |
Also Published As
Publication number | Publication date |
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US20180329133A1 (en) | 2018-11-15 |
US10274662B2 (en) | 2019-04-30 |
CN108870197A (zh) | 2018-11-23 |
CN108870197B (zh) | 2020-11-13 |
CN208268885U (zh) | 2018-12-21 |
JP6669691B2 (ja) | 2020-03-18 |
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