JPH0422780U - - Google Patents

Info

Publication number
JPH0422780U
JPH0422780U JP1990063983U JP6398390U JPH0422780U JP H0422780 U JPH0422780 U JP H0422780U JP 1990063983 U JP1990063983 U JP 1990063983U JP 6398390 U JP6398390 U JP 6398390U JP H0422780 U JPH0422780 U JP H0422780U
Authority
JP
Japan
Prior art keywords
light source
light guide
incident end
end surface
length
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.)
Granted
Application number
JP1990063983U
Other languages
Japanese (ja)
Other versions
JP2540303Y2 (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 JP1990063983U priority Critical patent/JP2540303Y2/en
Priority to KR1019910003879A priority patent/KR100225864B1/en
Priority to EP91103713A priority patent/EP0462361B1/en
Priority to US07/666,901 priority patent/US5134549A/en
Priority to DE69120349T priority patent/DE69120349T2/en
Publication of JPH0422780U publication Critical patent/JPH0422780U/ja
Application granted granted Critical
Publication of JP2540303Y2 publication Critical patent/JP2540303Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

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

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図は本考案の第１の実施例を示す
図、第３図は第２の実施例のパターンを示す図、
第４図、第５図は従来の導光体を用いた面光源装
置の図である。 １……光源、２……導光体、３……拡散板、４
……反射板、５，６，７，８……拡散作用を有す
るパターン。 1 and 2 are diagrams showing the first embodiment of the present invention, and FIG. 3 is a diagram showing the pattern of the second embodiment,
4 and 5 are diagrams of a surface light source device using a conventional light guide. 1... Light source, 2... Light guide, 3... Diffusion plate, 4
... Reflection plate, 5, 6, 7, 8... Pattern with a diffusing effect.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 線状の光源と、入射端面を前記光源に近接配置
した導光体と、前記導光体表面に設けた拡散板と
、前記導光体の裏面に設けた反射面とよりなる面
光源装置において、前記導光体の入射端面の長さ
を前記線状の光源の長さとほぼ等しく又入射端面
側から他端にかけて面積において疎から密に変化
し更に光源の電極部の近くが密になつている拡散
作用を有するパターンが形成された面光源装置。 In a surface light source device comprising a linear light source, a light guide whose incident end surface is arranged close to the light source, a diffuser plate provided on the surface of the light guide, and a reflective surface provided on the back surface of the light guide. , the length of the incident end surface of the light guide is approximately equal to the length of the linear light source, and the area changes from sparse to dense from the incident end surface side to the other end, and further becomes denser near the electrode portion of the light source. A surface light source device in which a pattern with a diffusion effect is formed.
JP1990063983U 1990-06-19 1990-06-19 Surface light source device Expired - Lifetime JP2540303Y2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1990063983U JP2540303Y2 (en) 1990-06-19 1990-06-19 Surface light source device
KR1019910003879A KR100225864B1 (en) 1990-06-19 1991-03-11 Surface light source device
EP91103713A EP0462361B1 (en) 1990-06-19 1991-03-11 Surface light source device
US07/666,901 US5134549A (en) 1990-06-19 1991-03-11 Surface light source device
DE69120349T DE69120349T2 (en) 1990-06-19 1991-03-11 Device for a flat light source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990063983U JP2540303Y2 (en) 1990-06-19 1990-06-19 Surface light source device

Publications (2)

Publication Number Publication Date
JPH0422780U true JPH0422780U (en) 1992-02-25
JP2540303Y2 JP2540303Y2 (en) 1997-07-02

Family

ID=31594518

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990063983U Expired - Lifetime JP2540303Y2 (en) 1990-06-19 1990-06-19 Surface light source device

Country Status (1)

Country Link
JP (1) JP2540303Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990003536A (en) * 1997-06-25 1999-01-15 김영환 Backlight Unit of Liquid Crystal Display

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01221733A (en) * 1988-02-29 1989-09-05 Brother Ind Ltd original bridge protection device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01221733A (en) * 1988-02-29 1989-09-05 Brother Ind Ltd original bridge protection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990003536A (en) * 1997-06-25 1999-01-15 김영환 Backlight Unit of Liquid Crystal Display

Also Published As

Publication number Publication date
JP2540303Y2 (en) 1997-07-02

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term