JP5920145B2 - 線状光源及び面状光源 - Google Patents
線状光源及び面状光源 Download PDFInfo
- Publication number
- JP5920145B2 JP5920145B2 JP2012214139A JP2012214139A JP5920145B2 JP 5920145 B2 JP5920145 B2 JP 5920145B2 JP 2012214139 A JP2012214139 A JP 2012214139A JP 2012214139 A JP2012214139 A JP 2012214139A JP 5920145 B2 JP5920145 B2 JP 5920145B2
- Authority
- JP
- Japan
- Prior art keywords
- light source
- led chip
- linear light
- height
- side wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- G02B6/0031—Reflecting element, sheet or layer
-
- 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
- F21V7/0008—Reflectors for light sources providing for indirect lighting
-
- 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
- F21V7/0025—Combination of two or more reflectors for a single light source
- F21V7/0033—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
-
- 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
-
- 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
- G02B6/0028—Light guide, e.g. taper
-
- 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
- G02B6/0066—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
- G02B6/0073—Light emitting diode [LED]
-
- 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
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
-
- 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]
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
線状光源を提供する。
図1(a)は、実施の形態に係る面状光源の斜視図である。面状光源1は、線状光源10と、線状光源10の光取出面を側面で塞ぐように設けられた導光板20と、導光板20の片面及び線状光源10の両面を覆う反射シート30と、を有する。
上記実施の形態によれば、第2のテーパー側壁部12bの高さを第1のテーパー側壁部12aの高さよりも低くすることにより、LEDチップ11から水平に第2の方向D2に発せられた光をリフレクタ12により反射し、LEDチップ11から第2の方向D2の斜め上方に発せられた光を反射シート30により反射する。このような構成により、線状光源及び線状光源を有する面状光源は、光取出効率に優れ、かつ薄型化に適する。また、反射シート30の劣化を抑えることもできる。
10 線状光源
11 LEDチップ
12 リフレクタ
12a 第1のテーパー側壁部
12b 第2のテーパー側壁部
13 透光部
20 導光板
30 反射シート
D1 第1の方向
D2 第2の方向
Claims (6)
- 第1の方向に沿って線状に配置された複数のLEDチップと、
各々の前記LEDチップを前記第1の方向に沿って挟む第1のテーパー側壁部と前記第1の方向と直交する第2の方向に沿って挟む第2のテーパー側壁部により、各々の前記LEDチップを囲むように設けられ、前記第2のテーパー側壁部の高さが前記第1のテーパー側壁部の高さよりも低いリフレクタと、
を有し、
前記第1のテーパー側壁部は、各々の前記LEDチップが配置された面から上側へ向かうに従って、各々の前記LEDチップとの距離が大きくなる、一対の傾斜面よりなり、
前記第2のテーパー側壁部は、各々の前記LEDチップが配置された面から上側へ向かうに従って、各々の前記LEDチップとの距離が大きくなる、一対の傾斜面よりなる、
線状光源。 - 前記第2のテーパー側壁部の高さは、前記LEDチップの発光層の上端の高さ以上である、
請求項1に記載の線状光源。 - 前記第2のテーパー側壁部の高さは、前記LEDチップの上端の高さ以上である、
請求項1に記載の線状光源。 - 請求項1〜3のいずれか1項に記載の線状光源と、
前記線状光源の光取出面を側面で塞ぐように設けられ、前記線状光源から発せられた光を取り込んで面状に発する導光板と、
前記線状光源の前記第1の方向の側面の、前記第2のテーパー側壁部と前記導光板との間の透光部を少なくとも覆う反射シートと、
を有する面状光源。 - 前記反射シートの光反射率は前記リフレクタの光反射率よりも高い、
請求項4に記載の面状光源。 - 前記反射シートは正反射型の反射シートである、
請求項4又は5に記載の面状光源。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012214139A JP5920145B2 (ja) | 2012-09-27 | 2012-09-27 | 線状光源及び面状光源 |
US13/922,178 US9164217B2 (en) | 2012-09-27 | 2013-06-19 | Linear light source and planar light source |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012214139A JP5920145B2 (ja) | 2012-09-27 | 2012-09-27 | 線状光源及び面状光源 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014067681A JP2014067681A (ja) | 2014-04-17 |
JP5920145B2 true JP5920145B2 (ja) | 2016-05-18 |
Family
ID=50338680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012214139A Expired - Fee Related JP5920145B2 (ja) | 2012-09-27 | 2012-09-27 | 線状光源及び面状光源 |
Country Status (2)
Country | Link |
---|---|
US (1) | US9164217B2 (ja) |
JP (1) | JP5920145B2 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWD166188S (zh) * | 2014-01-23 | 2015-02-21 | 鴻海精密工業股份有限公司 | 導光板 |
TWD165415S (zh) * | 2014-04-10 | 2015-01-11 | 鴻海精密工業股份有限公司 | 導光板 |
TWD165416S (zh) * | 2014-04-10 | 2015-01-11 | 鴻海精密工業股份有限公司 | 導光板 |
TW201606398A (zh) * | 2014-08-14 | 2016-02-16 | 鴻海精密工業股份有限公司 | 反射罩以及使用該反射罩的照明裝置及背光裝置 |
EP3440404A1 (en) * | 2016-04-08 | 2019-02-13 | Corning Incorporated | Backlight units comprising a thin light guide plate and a light coupling unit |
EP3273297B1 (en) | 2016-07-20 | 2021-05-26 | Nichia Corporation | Light emitting device |
JP6436193B2 (ja) * | 2016-07-20 | 2018-12-12 | 日亜化学工業株式会社 | 発光装置 |
US20180210138A1 (en) * | 2017-01-24 | 2018-07-26 | Cooper Technologies Company | Lighting System With Lightguide Formed From Multiple Optical Materials |
KR102158906B1 (ko) * | 2018-04-19 | 2020-09-24 | 희성전자 주식회사 | 광 확산 구조체 및 이를 포함하는 백라이트 유닛 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3187280B2 (ja) * | 1995-05-23 | 2001-07-11 | シャープ株式会社 | 面照明装置 |
JP4144498B2 (ja) * | 2002-10-01 | 2008-09-03 | 松下電器産業株式会社 | 線状光源装置及びその製造方法、並びに、面発光装置 |
KR100732267B1 (ko) | 2003-09-29 | 2007-06-25 | 마츠시타 덴끼 산교 가부시키가이샤 | 선형 광원장치 및 그 제조방법, 그리고 면 발광장치 |
JP5214128B2 (ja) * | 2005-11-22 | 2013-06-19 | シャープ株式会社 | 発光素子及び発光素子を備えたバックライトユニット |
US20090045423A1 (en) * | 2006-01-13 | 2009-02-19 | Takashi Hashimoto | Semiconductor light-emitting device |
JP2008041567A (ja) * | 2006-08-09 | 2008-02-21 | Sharp Corp | 発光装置 |
JP5236366B2 (ja) | 2008-07-01 | 2013-07-17 | ミネベア株式会社 | 線状光源装置、および面状照明装置 |
JP2010080401A (ja) * | 2008-09-29 | 2010-04-08 | Fujifilm Corp | 面状照明装置 |
KR101515833B1 (ko) * | 2008-10-08 | 2015-05-04 | 삼성전자주식회사 | 광학 장치 |
-
2012
- 2012-09-27 JP JP2012214139A patent/JP5920145B2/ja not_active Expired - Fee Related
-
2013
- 2013-06-19 US US13/922,178 patent/US9164217B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20140085927A1 (en) | 2014-03-27 |
JP2014067681A (ja) | 2014-04-17 |
US9164217B2 (en) | 2015-10-20 |
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