JPH0463402U - - Google Patents

Info

Publication number
JPH0463402U
JPH0463402U JP10724890U JP10724890U JPH0463402U JP H0463402 U JPH0463402 U JP H0463402U JP 10724890 U JP10724890 U JP 10724890U JP 10724890 U JP10724890 U JP 10724890U JP H0463402 U JPH0463402 U JP H0463402U
Authority
JP
Japan
Prior art keywords
light
guide plate
face
area ratio
light guide
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
JP10724890U
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 JP10724890U priority Critical patent/JPH0463402U/ja
Publication of JPH0463402U publication Critical patent/JPH0463402U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Light Guides In General And Applications Therefor (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Description

【図面の簡単な説明】
第1図は導光板の断面図、第2図は第1実験を
示す説明図、第3図は第2実験を示す説明図、第
4図は本考案の実施例を示すグラフである。又、
第5図〜第8図は従来例を示すもので、第5図及
び第7図は塗布面積を示す説明図、第6図、第8
図は第5図及び第7図におけるそれぞれの輝度を
示すグラフである。 1……導光板、4……拡散印刷、5……塗層、
6……入光面、7……端面、8……光源。

Claims (1)

  1. 【実用新案登録請求の範囲】 一面を光放散面2、他面を反射面3とし、該反
    射面3の内側に拡散印刷4を施した塗層5を有す
    る導光板1の一側面を入光面6、他側面を端面7
    として、該入光面6より入射した光を前記塗層5
    の拡散印刷4によつて乱反射させ、光放散面2か
    ら放出、発光させるようにした導光板において、 前記導光板1の端面7から入光面6方向への距
    離をxcmとし、端面7部分での拡散印刷4の塗布
    面積比を1とした場合の前記端面7部分の塗布面
    積比に対する各位置での塗布面積比の割合をyと
    した関係式が y=A(X/10) (0.3<A
    <0.8) であることを特徴とする導光板。
JP10724890U 1990-10-12 1990-10-12 Pending JPH0463402U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10724890U JPH0463402U (ja) 1990-10-12 1990-10-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10724890U JPH0463402U (ja) 1990-10-12 1990-10-12

Publications (1)

Publication Number Publication Date
JPH0463402U true JPH0463402U (ja) 1992-05-29

Family

ID=31853668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10724890U Pending JPH0463402U (ja) 1990-10-12 1990-10-12

Country Status (1)

Country Link
JP (1) JPH0463402U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7001035B2 (en) * 2002-03-05 2006-02-21 Seiko Epson Corporation Illumination device, liquid crystal device, and electronic apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01241590A (ja) * 1988-03-23 1989-09-26 Fujitsu Ltd 面照明装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01241590A (ja) * 1988-03-23 1989-09-26 Fujitsu Ltd 面照明装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7001035B2 (en) * 2002-03-05 2006-02-21 Seiko Epson Corporation Illumination device, liquid crystal device, and electronic apparatus

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