JPH0422779U - - Google Patents

Info

Publication number
JPH0422779U
JPH0422779U JP1990063982U JP6398290U JPH0422779U JP H0422779 U JPH0422779 U JP H0422779U JP 1990063982 U JP1990063982 U JP 1990063982U JP 6398290 U JP6398290 U JP 6398290U JP H0422779 U JPH0422779 U JP H0422779U
Authority
JP
Japan
Prior art keywords
light source
light guide
incident end
sparse
source device
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.)
Pending
Application number
JP1990063982U
Other languages
English (en)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1990063982U priority Critical patent/JPH0422779U/ja
Priority to DE69120349T priority patent/DE69120349T2/de
Priority to US07/666,901 priority patent/US5134549A/en
Priority to KR1019910003879A priority patent/KR100225864B1/ko
Priority to EP91103713A priority patent/EP0462361B1/en
Publication of JPH0422779U publication Critical patent/JPH0422779U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Optical Elements Other Than Lenses (AREA)

Description

【図面の簡単な説明】
第1図、第2図は本考案の第1の実施例を示す
図、第3図は上記実施例の輝度分布を示す図、第
4図は本考案の第2の実施例の拡散作用を有する
パターンを示す図、第5図、第6図は従来の導光
体を用いた面光源装置を示す図、第7図は上記従
来例の輝度分布を示す図である。 1……光源、2……導光体、3……拡散面、4
……第1の反射面、5……第2の反射面、6,7
……パターン。

Claims (1)

    【実用新案登録請求の範囲】
  1. 光源と、入射端面を光源に近接配置した導光体
    と導光体の表面に設けた拡散面と、導光体の拡散
    面とは反対側に設けた第1の反射面と、導光体の
    入射端面と反対側の端面に設けた第2の反射面と
    よりなる光源装置において、前記第1の反射面に
    入射端面から遠ざかるにつれて疎から次第に密に
    なり第2の反射面側で再び密から疎になる面積の
    密度変化を有する拡散作用を持つパターンを設け
    たことを特徴とする面光源装置。
JP1990063982U 1990-06-19 1990-06-19 Pending JPH0422779U (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1990063982U JPH0422779U (ja) 1990-06-19 1990-06-19
DE69120349T DE69120349T2 (de) 1990-06-19 1991-03-11 Gerät für eine flächenartige Lichtquelle
US07/666,901 US5134549A (en) 1990-06-19 1991-03-11 Surface light source device
KR1019910003879A KR100225864B1 (ko) 1990-06-19 1991-03-11 면광원장치
EP91103713A EP0462361B1 (en) 1990-06-19 1991-03-11 Surface light source device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990063982U JPH0422779U (ja) 1990-06-19 1990-06-19

Publications (1)

Publication Number Publication Date
JPH0422779U true JPH0422779U (ja) 1992-02-25

Family

ID=31594517

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990063982U Pending JPH0422779U (ja) 1990-06-19 1990-06-19

Country Status (1)

Country Link
JP (1) JPH0422779U (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001166149A (ja) * 1999-12-13 2001-06-22 Pioneer Electronic Corp 面状光源装置、及びそのための導光板
JP2002286938A (ja) * 2001-03-23 2002-10-03 Yuka Denshi Co Ltd 導光体及びこれを用いた面光源装置と液晶ディスプレイ装置
JP2016173419A (ja) * 2015-03-16 2016-09-29 凸版印刷株式会社 画像表示装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001166149A (ja) * 1999-12-13 2001-06-22 Pioneer Electronic Corp 面状光源装置、及びそのための導光板
JP2002286938A (ja) * 2001-03-23 2002-10-03 Yuka Denshi Co Ltd 導光体及びこれを用いた面光源装置と液晶ディスプレイ装置
JP2016173419A (ja) * 2015-03-16 2016-09-29 凸版印刷株式会社 画像表示装置

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