JP6315279B2 - 導光板 - Google Patents
導光板 Download PDFInfo
- Publication number
- JP6315279B2 JP6315279B2 JP2014505433A JP2014505433A JP6315279B2 JP 6315279 B2 JP6315279 B2 JP 6315279B2 JP 2014505433 A JP2014505433 A JP 2014505433A JP 2014505433 A JP2014505433 A JP 2014505433A JP 6315279 B2 JP6315279 B2 JP 6315279B2
- Authority
- JP
- Japan
- Prior art keywords
- guide plate
- light guide
- end side
- thickness
- light
- 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
Links
- 239000011521 glass Substances 0.000 claims description 80
- 239000011347 resin Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 230000007423 decrease Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 description 31
- 230000003287 optical effect Effects 0.000 description 12
- 239000006060 molten glass Substances 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
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
- G02B6/0015—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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Description
1a レンズの湾曲部
2 レンズ
2a レンズの湾曲部
3 レンズ
4 アシストガス噴射器
G ガラス板(導光板)
S ガラス板の表面
B ガラス板の裏面
Ga 膨出部
Z 端辺部
Gb 端辺部に連なる部位
Gc くびれ部
T テーパー部
P シリコン樹脂
E1 エネルギー密度の高い部位
E2 エネルギー密度の低い部位
R 光
L1 レーザー
L2 レーザー
L3 レーザー
A アシストガス
X 光軸
α 光軸の傾斜角度
β アシストガス照射器の傾斜角度
C1 焦点
C2 焦点
C3 焦点
Claims (5)
- 光源から出射した光を、該光源と対向する端辺部から採光して面発光するガラス板でなる導光板であって、
前記端辺部が、該端辺部に連なる部位と比較して板厚方向に厚みの大きい膨出部と、該膨出部と比較して板厚方向に厚みの小さいくびれ部とを有し、
前記膨出部が、前記端辺部に沿って周期的に形成されており、
前記くびれ部は、前記端辺部に連なる部位と比較して板厚方向に厚みが大きく、
前記端辺部の長手方向に直交する断面の径が相対的に大きい前記膨出部と相対的に小さい前記くびれ部とが該長手方向に沿って交互に並ぶことで、該長手方向に沿って前記端辺部の径が連続的に変化し、
前記端辺部に連なる部位の板厚が300μm以下であることを特徴とする導光板。 - 前記膨出部の板厚方向における厚みが、前記端辺部に連なる部位の板厚に対して、二倍以上の厚みを有することを特徴とする請求項1に記載の導光板。
- 前記端辺部における粗さ曲線要素の平均長さRsmの値が、10μm以上で、且つ2mm以下であることを特徴とする請求項1又は2に記載の導光板。
- 前記膨出部から前記端辺部に連なる部位に向かって、漸次に板厚方向における厚みが縮小するテーパー部が形成されるように、前記ガラス板の表面側、及び裏面側に、ガラスと略同一の屈折率を有する材料が敷詰められていることを特徴とする請求項1〜3のいずれかに記載の導光板。
- 前記ガラスと略同一の屈折率を有する材料が、樹脂であることを特徴とする請求項4に記載の導光板。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013033073 | 2013-02-22 | ||
JP2013033073 | 2013-02-22 | ||
PCT/JP2014/052430 WO2014129299A1 (ja) | 2013-02-22 | 2014-02-03 | 導光板 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2014129299A1 JPWO2014129299A1 (ja) | 2017-02-02 |
JP6315279B2 true JP6315279B2 (ja) | 2018-04-25 |
Family
ID=51391096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014505433A Expired - Fee Related JP6315279B2 (ja) | 2013-02-22 | 2014-02-03 | 導光板 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP6315279B2 (ja) |
TW (1) | TW201441684A (ja) |
WO (1) | WO2014129299A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI588512B (zh) * | 2015-09-11 | 2017-06-21 | Chenfeng Optronics Corp | Production method of glass light guide plate with high transmission efficiency |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10247413A (ja) * | 1997-03-03 | 1998-09-14 | Omron Corp | 面光源装置 |
JP3316438B2 (ja) * | 1997-12-08 | 2002-08-19 | 三洋電機株式会社 | 導光板、面光源及び液晶表示装置 |
JP2001013321A (ja) * | 1999-06-09 | 2001-01-19 | Three M Innovative Properties Co | 光学積層体、照明装置および面発光装置 |
US6784603B2 (en) * | 2001-07-20 | 2004-08-31 | Teledyne Lighting And Display Products, Inc. | Fluorescent lighting apparatus |
JP2003272428A (ja) * | 2002-03-19 | 2003-09-26 | Matsushita Electric Ind Co Ltd | 導光板、面照明装置、及び表示装置 |
JP2006093104A (ja) * | 2004-08-25 | 2006-04-06 | Seiko Instruments Inc | 照明装置およびそれを用いた表示装置 |
JP2008066097A (ja) * | 2006-09-07 | 2008-03-21 | Epson Imaging Devices Corp | 電気光学装置、照明装置、及び電子機器 |
JP2009199866A (ja) * | 2008-02-21 | 2009-09-03 | Hitachi Displays Ltd | 液晶表示装置 |
JP5027036B2 (ja) * | 2008-03-29 | 2012-09-19 | 古河電気工業株式会社 | 導光部材及びその製造方法 |
JP2010050064A (ja) * | 2008-08-25 | 2010-03-04 | Citizen Electronics Co Ltd | 導光板、面状ライトユニット及び表示装置並びに導光板の製造方法 |
CN102245962B (zh) * | 2008-12-16 | 2014-03-12 | 欧姆龙株式会社 | 面光源装置 |
JP5308963B2 (ja) * | 2009-08-28 | 2013-10-09 | 株式会社ジャパンディスプレイ | 液晶表示装置 |
TWI457620B (zh) * | 2011-08-17 | 2014-10-21 | Au Optronics Corp | 導光板及背光模組 |
JP5884070B2 (ja) * | 2011-12-16 | 2016-03-15 | パナソニックIpマネジメント株式会社 | 照明器具 |
-
2014
- 2014-02-03 WO PCT/JP2014/052430 patent/WO2014129299A1/ja active Application Filing
- 2014-02-03 JP JP2014505433A patent/JP6315279B2/ja not_active Expired - Fee Related
- 2014-02-21 TW TW103105754A patent/TW201441684A/zh unknown
Also Published As
Publication number | Publication date |
---|---|
TW201441684A (zh) | 2014-11-01 |
JPWO2014129299A1 (ja) | 2017-02-02 |
WO2014129299A1 (ja) | 2014-08-28 |
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