JPS54127299A - Lighting structure of photo detection type display unit - Google Patents

Lighting structure of photo detection type display unit

Info

Publication number
JPS54127299A
JPS54127299A JP3456478A JP3456478A JPS54127299A JP S54127299 A JPS54127299 A JP S54127299A JP 3456478 A JP3456478 A JP 3456478A JP 3456478 A JP3456478 A JP 3456478A JP S54127299 A JPS54127299 A JP S54127299A
Authority
JP
Japan
Prior art keywords
lamp
diffused
display unit
light
type display
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
JP3456478A
Other languages
Japanese (ja)
Inventor
Akio Ono
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP3456478A priority Critical patent/JPS54127299A/en
Publication of JPS54127299A publication Critical patent/JPS54127299A/en
Pending legal-status Critical Current

Links

Landscapes

  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

PURPOSE: To lead uniformly light from a fine light source such as a lamp over the entire liquid-crystal display part with high efficiency.
CONSTITUTION: A degree of diffused reflection of diffused-reflection surface 14 at the top surface or reverse surface of photoconductor 14 is made small at part 14a near lamp 9 and increased as lamp 9 becomes away; and then, material 15 which diffuses light is provided between liquid-crystal cell 10 and photoconductor 14 in order to diffuse lamp light diffused uniformly over the entire display part, thereby obtaining soft illumination.
COPYRIGHT: (C)1979,JPO&Japio
JP3456478A 1978-03-25 1978-03-25 Lighting structure of photo detection type display unit Pending JPS54127299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3456478A JPS54127299A (en) 1978-03-25 1978-03-25 Lighting structure of photo detection type display unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3456478A JPS54127299A (en) 1978-03-25 1978-03-25 Lighting structure of photo detection type display unit

Publications (1)

Publication Number Publication Date
JPS54127299A true JPS54127299A (en) 1979-10-03

Family

ID=12417799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3456478A Pending JPS54127299A (en) 1978-03-25 1978-03-25 Lighting structure of photo detection type display unit

Country Status (1)

Country Link
JP (1) JPS54127299A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5990983U (en) * 1982-12-11 1984-06-20 株式会社本田ロック liquid crystal display device
DE3313288A1 (en) * 1983-04-13 1984-10-18 Bosch Gmbh Robert Device for illuminating passive displays
JPS6227306U (en) * 1985-08-01 1987-02-19
JPS6326874U (en) * 1986-08-04 1988-02-22
JPH0217A (en) * 1987-11-12 1990-01-05 Mitsubishi Rayon Co Ltd Surface light source element
JPH0365982A (en) * 1989-08-03 1991-03-20 Pioneer Electron Corp Display board illuminating device for display device
JPH03118593A (en) * 1989-09-29 1991-05-21 Enplas Corp Illuminator
US5377027A (en) * 1992-10-02 1994-12-27 Motorola, Inc. Liquid crystal display device with pixel registration illumination
US5394255A (en) * 1992-01-27 1995-02-28 Sekisui Kagaku Kogyo Kabushiki Kaisha Liquid crystal display using a plurality of light adjusting sheets angled at 5 degrees or more
US6356391B1 (en) 1999-10-08 2002-03-12 3M Innovative Properties Company Optical film with variable angle prisms
US6447135B1 (en) 1999-10-08 2002-09-10 3M Innovative Properties Company Lightguide having a directly secured reflector and method of making the same
US6845212B2 (en) 1999-10-08 2005-01-18 3M Innovative Properties Company Optical element having programmed optical structures
US7046905B1 (en) 1999-10-08 2006-05-16 3M Innovative Properties Company Blacklight with structured surfaces

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5990983U (en) * 1982-12-11 1984-06-20 株式会社本田ロック liquid crystal display device
DE3313288A1 (en) * 1983-04-13 1984-10-18 Bosch Gmbh Robert Device for illuminating passive displays
JPS6227306U (en) * 1985-08-01 1987-02-19
JPS6326874U (en) * 1986-08-04 1988-02-22
JPH0217A (en) * 1987-11-12 1990-01-05 Mitsubishi Rayon Co Ltd Surface light source element
JPH0365982A (en) * 1989-08-03 1991-03-20 Pioneer Electron Corp Display board illuminating device for display device
JPH03118593A (en) * 1989-09-29 1991-05-21 Enplas Corp Illuminator
US5394255A (en) * 1992-01-27 1995-02-28 Sekisui Kagaku Kogyo Kabushiki Kaisha Liquid crystal display using a plurality of light adjusting sheets angled at 5 degrees or more
US5377027A (en) * 1992-10-02 1994-12-27 Motorola, Inc. Liquid crystal display device with pixel registration illumination
US6356391B1 (en) 1999-10-08 2002-03-12 3M Innovative Properties Company Optical film with variable angle prisms
US6447135B1 (en) 1999-10-08 2002-09-10 3M Innovative Properties Company Lightguide having a directly secured reflector and method of making the same
US6560026B2 (en) 1999-10-08 2003-05-06 Mark E. Gardiner Optical film with variable angle prisms
US6707611B2 (en) 1999-10-08 2004-03-16 3M Innovative Properties Company Optical film with variable angle prisms
US6845212B2 (en) 1999-10-08 2005-01-18 3M Innovative Properties Company Optical element having programmed optical structures
US7046905B1 (en) 1999-10-08 2006-05-16 3M Innovative Properties Company Blacklight with structured surfaces

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