JPS53110561A - Lighting device of electronic watches - Google Patents

Lighting device of electronic watches

Info

Publication number
JPS53110561A
JPS53110561A JP2442077A JP2442077A JPS53110561A JP S53110561 A JPS53110561 A JP S53110561A JP 2442077 A JP2442077 A JP 2442077A JP 2442077 A JP2442077 A JP 2442077A JP S53110561 A JPS53110561 A JP S53110561A
Authority
JP
Japan
Prior art keywords
lighting device
electronic watches
lighting
watches
electronic
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
JP2442077A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6211314B2 (enrdf_load_stackoverflow
Inventor
Tadashi Hanaoka
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 JP2442077A priority Critical patent/JPS53110561A/ja
Priority to GB31610/77A priority patent/GB1540562A/en
Priority to US05/819,432 priority patent/US4208869A/en
Publication of JPS53110561A publication Critical patent/JPS53110561A/ja
Publication of JPS6211314B2 publication Critical patent/JPS6211314B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0047—Details electrical, e.g. selection or application of the operating voltage
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133612—Electrical details

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Electric Clocks (AREA)
  • Indicating Measured Values (AREA)
  • Details Of Measuring And Other Instruments (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
JP2442077A 1976-07-31 1977-03-08 Lighting device of electronic watches Granted JPS53110561A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2442077A JPS53110561A (en) 1977-03-08 1977-03-08 Lighting device of electronic watches
GB31610/77A GB1540562A (en) 1976-07-31 1977-07-27 Illumination device for electronic timepiece
US05/819,432 US4208869A (en) 1976-07-31 1977-07-27 Illumination device for electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2442077A JPS53110561A (en) 1977-03-08 1977-03-08 Lighting device of electronic watches

Publications (2)

Publication Number Publication Date
JPS53110561A true JPS53110561A (en) 1978-09-27
JPS6211314B2 JPS6211314B2 (enrdf_load_stackoverflow) 1987-03-11

Family

ID=12137653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2442077A Granted JPS53110561A (en) 1976-07-31 1977-03-08 Lighting device of electronic watches

Country Status (1)

Country Link
JP (1) JPS53110561A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5978393A (ja) * 1982-10-27 1984-05-07 ロ−ム株式会社 螢光表示管の駆動装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5978393A (ja) * 1982-10-27 1984-05-07 ロ−ム株式会社 螢光表示管の駆動装置

Also Published As

Publication number Publication date
JPS6211314B2 (enrdf_load_stackoverflow) 1987-03-11

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