JP2013058318A5 - - Google Patents

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Publication number
JP2013058318A5
JP2013058318A5 JP2011194722A JP2011194722A JP2013058318A5 JP 2013058318 A5 JP2013058318 A5 JP 2013058318A5 JP 2011194722 A JP2011194722 A JP 2011194722A JP 2011194722 A JP2011194722 A JP 2011194722A JP 2013058318 A5 JP2013058318 A5 JP 2013058318A5
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JP
Japan
Prior art keywords
refractive index
index layer
low
light
sheet
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Application number
JP2011194722A
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Japanese (ja)
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JP5790347B2 (en
JP2013058318A (en
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Priority to JP2011194722A priority Critical patent/JP5790347B2/en
Priority claimed from JP2011194722A external-priority patent/JP5790347B2/en
Publication of JP2013058318A publication Critical patent/JP2013058318A/en
Publication of JP2013058318A5 publication Critical patent/JP2013058318A5/ja
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Publication of JP5790347B2 publication Critical patent/JP5790347B2/en
Expired - Fee Related legal-status Critical Current
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Claims (8)

少なくとも一つの光入射面と、少なくとも一つの光出射面とを有するシート状導光体であって、
屈折率η１が
１．４５≦η１＜１．６
を満たすように設定された透明樹脂からなる高屈折率層と、
屈折率η２が
１．３５≦η２＜１．４５
を満たすように設定された透明樹脂からなる低屈折率層とが前記光入射面に対して垂直方向に交互に複数積層された導光体本体を有し、
前記導光体本体に、前記高屈折率層と前記低屈折率層との積層方向に沿って深さが深くなる複数の凹部を形成し、
これら複数の凹部は、前記高屈折率層、及び前記低屈折率層の延在方向に沿って、且つ前記光入射面から離れるに従って漸次前記深さが深くなるように配置されていることを特徴とするシート状導光体。 A sheet-like light guide having at least one light incident surface and at least one light emitting surface,
The refractive index η1 is 1.45 ≦ η1 <1.6.
A high refractive index layer made of a transparent resin set to satisfy
Refractive index η2 is 1.35 ≦ η2 <1.45
A low refractive index layer made of a transparent resin set so as to satisfy a light guide body that is alternately stacked in a direction perpendicular to the light incident surface,
In the light guide body, a plurality of recesses whose depth is increased along the stacking direction of the high refractive index layer and the low refractive index layer,
The plurality of recesses are arranged such that the depth gradually increases along the extending direction of the high-refractive index layer and the low-refractive index layer and away from the light incident surface. A sheet-like light guide. 高屈折率層と低屈折率層とが交互に複数積層された多層積層体であって、A multilayer laminate in which a plurality of high refractive index layers and low refractive index layers are alternately laminated,
高屈折率層を２層以上有し、Having two or more high refractive index layers,
多層積層体の最外面が、低屈折率層であり、The outermost surface of the multilayer laminate is a low refractive index layer,
高屈折率層の屈折率η１、低屈折率層の屈折率η２とするとき、η１−η２の式で表される屈折率差Δηが、０を超える、When the refractive index η1 of the high-refractive index layer and the refractive index η2 of the low-refractive index layer are set, the refractive index difference Δη represented by the formula η1-η2 exceeds 0.
多層積層体。Multilayer laminate. 高屈折率層の屈折率η１が、１．４５以上１．６未満である、請求項２に記載の多層積層体。The multilayer laminate according to claim 2, wherein the refractive index η1 of the high refractive index layer is 1.45 or more and less than 1.6. 高屈折率層の厚みＴ１が、１０μｍ〜５００μｍである、請求項２又は３に記載の多層積層体。The multilayer laminate according to claim 2 or 3, wherein the thickness T1 of the high refractive index layer is 10 µm to 500 µm. 低屈折率層の厚みＴ２が、３μｍ〜５０μｍである、請求項２〜４のいずれかに記載の多層積層体。The multilayer laminate according to any one of claims 2 to 4, wherein a thickness T2 of the low refractive index layer is 3 µm to 50 µm. 以下の（１）〜（４）のいずれかの方法により高屈折率層と低屈折率層とを積層する、請求項２〜５のいずれかに記載の多層積層体の製造方法。The manufacturing method of the multilayer laminated body in any one of Claims 2-5 which laminates | stacks a high refractive index layer and a low refractive index layer by the method in any one of the following (1)-(4).
（１）多層溶融押出により高屈折率層と低屈折率層とを多層一体成形する方法(1) A method of integrally forming a high refractive index layer and a low refractive index layer by multilayer melt extrusion
（２）高屈折率層となる樹脂シートあるいは樹脂フィルムと、低屈折率層を形成する樹脂シートや樹脂フィルムを交互に積層して製造する方法(2) A method of manufacturing by alternately laminating a resin sheet or resin film to be a high refractive index layer and a resin sheet or resin film to form a low refractive index layer
（３）低屈折率層／高屈折率層／低屈折率層構造のシートを積層して製造する方法(3) Method of manufacturing by laminating sheets of low refractive index layer / high refractive index layer / low refractive index layer structure
（４）加熱プレス法や接着剤を用いて高屈折率層と低屈折率層を交互に積層する方法(4) A method of alternately stacking a high refractive index layer and a low refractive index layer by using a heat press method or an adhesive. 少なくとも一つの光入射面と、少なくとも一つの光出射面とを有するシート状導光体であって、A sheet-like light guide having at least one light incident surface and at least one light emitting surface,
請求項２〜５のいずれかに記載の多層積層体に、光出射手段を有する、シート状導光体。The sheet-like light guide which has a light-projection means in the multilayer laminated body in any one of Claims 2-5. 請求項１又は７に記載のシート状導光体の光入射面に、発光ダイオードを有する、光源。The light source which has a light emitting diode in the light-incidence surface of the sheet-like light guide of Claim 1 or 7.
JP2011194722A 2011-09-07 2011-09-07 Sheet light guide, sheet light guide manufacturing method and light source Expired - Fee Related JP5790347B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011194722A JP5790347B2 (en) 2011-09-07 2011-09-07 Sheet light guide, sheet light guide manufacturing method and light source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011194722A JP5790347B2 (en) 2011-09-07 2011-09-07 Sheet light guide, sheet light guide manufacturing method and light source

Publications (3)

Publication Number Publication Date
JP2013058318A JP2013058318A (en) 2013-03-28
JP2013058318A5 true JP2013058318A5 (en) 2014-08-21
JP5790347B2 JP5790347B2 (en) 2015-10-07

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JP2011194722A Expired - Fee Related JP5790347B2 (en) 2011-09-07 2011-09-07 Sheet light guide, sheet light guide manufacturing method and light source

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017137653A1 (en) * 2016-02-09 2017-08-17 Nanocomp Oy Ltd Light guide with plurality of light channels
JP6732094B2 (en) 2017-02-27 2020-07-29 富士フイルム株式会社 Brightness uniformizing member, backlight unit and liquid crystal display device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4192697B2 (en) * 2003-06-24 2008-12-10 凸版印刷株式会社 Light guide, lighting device, and color image display
JP5485137B2 (en) * 2008-12-25 2014-05-07 三菱レイヨン株式会社 Light guide for light source device

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