JPH0581909B2 - - Google Patents

Info

Publication number
JPH0581909B2
JPH0581909B2 JP1076443A JP7644389A JPH0581909B2 JP H0581909 B2 JPH0581909 B2 JP H0581909B2 JP 1076443 A JP1076443 A JP 1076443A JP 7644389 A JP7644389 A JP 7644389A JP H0581909 B2 JPH0581909 B2 JP H0581909B2
Authority
JP
Japan
Prior art keywords
light
plate
brightness
lighting device
diffuser plate
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 - Lifetime
Application number
JP1076443A
Other languages
English (en)
Japanese (ja)
Other versions
JPH02257188A (ja
Inventor
Kazuaki Yokoyama
Tsudoi Ebina
Isamu Kaneko
Atsushi Noguchi
Hideaki Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Enplas Corp
Original Assignee
Enplas Corp
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 by Enplas Corp filed Critical Enplas Corp
Priority to JP1076443A priority Critical patent/JPH02257188A/ja
Publication of JPH02257188A publication Critical patent/JPH02257188A/ja
Publication of JPH0581909B2 publication Critical patent/JPH0581909B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
JP1076443A 1989-03-30 1989-03-30 光拡散装置 Granted JPH02257188A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1076443A JPH02257188A (ja) 1989-03-30 1989-03-30 光拡散装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1076443A JPH02257188A (ja) 1989-03-30 1989-03-30 光拡散装置

Publications (2)

Publication Number Publication Date
JPH02257188A JPH02257188A (ja) 1990-10-17
JPH0581909B2 true JPH0581909B2 (en]) 1993-11-16

Family

ID=13605295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1076443A Granted JPH02257188A (ja) 1989-03-30 1989-03-30 光拡散装置

Country Status (1)

Country Link
JP (1) JPH02257188A (en])

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04107237U (ja) * 1991-02-26 1992-09-16 株式会社ウノン技研 面光源部材
JPH04356015A (ja) * 1991-03-22 1992-12-09 Tosoh Corp バックライト
DE69409977T2 (de) * 1993-01-11 1998-10-22 Koninkl Philips Electronics Nv Beleuchtungssystem und ein solches System umfassendes Anzeigegerät
DE69418502T2 (de) * 1993-02-01 2000-02-24 Tosoh Corp Vorrichtung zur Hintergrund-Beleuchtung
US5598280A (en) * 1993-03-23 1997-01-28 Dai Nippon Printing Co., Ltd. Film lens and a surface light source using the same
TW417035B (en) * 1994-05-11 2001-01-01 Sharp Kk Lighting device and a liquid crystal display using such a device
EP0789857B1 (en) * 1995-08-23 2004-06-30 Koninklijke Philips Electronics N.V. Illumination system for a flat-panel picture display device
CN1183407C (zh) * 1995-08-23 2005-01-05 皇家菲利浦电子有限公司 照明系统及含该照明系统的平板图像显示装置
JPH10246805A (ja) 1997-03-06 1998-09-14 Dainippon Printing Co Ltd 拡散光制御用光学シート、バックライト装置及び液晶表示装置
US6903788B2 (en) 2001-07-05 2005-06-07 Nitto Denko Corporation Optical film and a liquid crystal display using the same
JP4472499B2 (ja) * 2004-11-26 2010-06-02 シーケーディ株式会社 不良検査装置及びｐｔｐ包装機
JP6471298B2 (ja) * 2016-08-22 2019-02-20 株式会社ロッソ 表示体および広告装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2454135A1 (fr) * 1979-04-13 1980-11-07 Suisse Horlogerie Structure de surface diffusante pour un guide de lumiere de dispositif d'affichage d'informations
JPS57184983U (en]) * 1981-05-20 1982-11-24
US4542449A (en) * 1983-08-29 1985-09-17 Canadian Patents & Development Limited Lighting panel with opposed 45° corrugations
JPS6155684A (ja) * 1984-08-27 1986-03-20 三菱レイヨン株式会社 光拡散装置
CA1279783C (en) * 1985-11-21 1991-02-05 Minnesota Mining And Manufacturing Company Totally internally reflecting thin, flexible film
JPS62217501A (ja) * 1986-03-19 1987-09-25 東芝ライテック株式会社 照明器具
JPS6368814A (ja) * 1986-09-10 1988-03-28 Matsushita Electric Works Ltd 液晶表示装置用照明装置
JPS6382223U (en]) * 1986-11-17 1988-05-30
US4791540A (en) * 1987-05-26 1988-12-13 Minnesota Mining And Manufacturing Company Light fixture providing normalized output
JPH0727136B2 (ja) * 1987-11-12 1995-03-29 三菱レイヨン株式会社 面光源素子
JPH0727137B2 (ja) * 1988-06-02 1995-03-29 三菱レイヨン株式会社 面光源素子
JPH0277726A (ja) * 1988-09-14 1990-03-16 Hitachi Ltd 液晶表示装置

Also Published As

Publication number Publication date
JPH02257188A (ja) 1990-10-17

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