JPH0327909B2 - - Google Patents

Info

Publication number
JPH0327909B2
JPH0327909B2 JP59277625A JP27762584A JPH0327909B2 JP H0327909 B2 JPH0327909 B2 JP H0327909B2 JP 59277625 A JP59277625 A JP 59277625A JP 27762584 A JP27762584 A JP 27762584A JP H0327909 B2 JPH0327909 B2 JP H0327909B2
Authority
JP
Japan
Prior art keywords
light source
light
prism plate
fresnel prism
linear fresnel
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
JP59277625A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61158367A (ja
Inventor
Hiroshi Hamada
Kyoshi Nakazawa
Hiroshi Take
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP59277625A priority Critical patent/JPS61158367A/ja
Publication of JPS61158367A publication Critical patent/JPS61158367A/ja
Publication of JPH0327909B2 publication Critical patent/JPH0327909B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
JP59277625A 1984-12-29 1984-12-29 照明装置 Granted JPS61158367A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59277625A JPS61158367A (ja) 1984-12-29 1984-12-29 照明装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59277625A JPS61158367A (ja) 1984-12-29 1984-12-29 照明装置

Publications (2)

Publication Number Publication Date
JPS61158367A JPS61158367A (ja) 1986-07-18
JPH0327909B2 true JPH0327909B2 (en]) 1991-04-17

Family

ID=17586029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59277625A Granted JPS61158367A (ja) 1984-12-29 1984-12-29 照明装置

Country Status (1)

Country Link
JP (1) JPS61158367A (en])

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0778561B2 (ja) * 1987-06-24 1995-08-23 信越ポリマ−株式会社 バックライト装置
JPH01126627A (ja) * 1987-11-11 1989-05-18 Hitachi Ltd 液晶表示装置
JPH03144486A (ja) * 1989-10-31 1991-06-19 Enplas Corp 面光源装置
JP2803899B2 (ja) * 1990-08-23 1998-09-24 三菱電機株式会社 液晶表示装置
US5150966A (en) * 1990-09-19 1992-09-29 Minnesota Mining And Manufacturing Company Uniform intensity profile catadioptric lens
JP2723481B2 (ja) * 1995-04-07 1998-03-09 株式会社光エネルギ応用研究所 平面状照明装置
US6224223B1 (en) 1997-12-22 2001-05-01 Casio Computer Co., Ltd. Illumination panel and display device using the same
US6447135B1 (en) 1999-10-08 2002-09-10 3M Innovative Properties Company Lightguide having a directly secured reflector and method of making the same
US6356391B1 (en) 1999-10-08 2002-03-12 3M Innovative Properties Company Optical film with variable angle prisms
US7046905B1 (en) 1999-10-08 2006-05-16 3M Innovative Properties Company Blacklight with structured surfaces
US6845212B2 (en) 1999-10-08 2005-01-18 3M Innovative Properties Company Optical element having programmed optical structures

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51130190A (en) * 1975-05-06 1976-11-12 Hitachi Ltd Liquid crystal display

Also Published As

Publication number Publication date
JPS61158367A (ja) 1986-07-18

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term