JPS5288073A - Electronic watch with illumination - Google Patents

Electronic watch with illumination

Info

Publication number
JPS5288073A
JPS5288073A JP439176A JP439176A JPS5288073A JP S5288073 A JPS5288073 A JP S5288073A JP 439176 A JP439176 A JP 439176A JP 439176 A JP439176 A JP 439176A JP S5288073 A JPS5288073 A JP S5288073A
Authority
JP
Japan
Prior art keywords
illumination
electronic watch
light
illuminance
modulating
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
JP439176A
Other languages
Japanese (ja)
Inventor
Toshikazu Hatsuse
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 JP439176A priority Critical patent/JPS5288073A/en
Publication of JPS5288073A publication Critical patent/JPS5288073A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G04G9/0052—Details electrical, e.g. selection or application of the operating voltage using means to adjust the display in accordance with the ambient light, e.g. switching or controlling a supplementary light source

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE:Time display is made readily visible even under any condition by detecting external light to light an illuminating lamp and modulating its illuminance with frequency.
JP439176A 1976-01-17 1976-01-17 Electronic watch with illumination Pending JPS5288073A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP439176A JPS5288073A (en) 1976-01-17 1976-01-17 Electronic watch with illumination

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP439176A JPS5288073A (en) 1976-01-17 1976-01-17 Electronic watch with illumination

Publications (1)

Publication Number Publication Date
JPS5288073A true JPS5288073A (en) 1977-07-22

Family

ID=11583044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP439176A Pending JPS5288073A (en) 1976-01-17 1976-01-17 Electronic watch with illumination

Country Status (1)

Country Link
JP (1) JPS5288073A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0463095U (en) * 1990-10-05 1992-05-29
KR20170107988A (en) 2015-02-03 2017-09-26 다이니폰 인사츠 가부시키가이샤 Vapor-deposition mask manufacturing method, vapor- deposition mask manufacturing device, laser mask, and organic semiconductor element manufacturing method
KR20190058450A (en) 2016-09-30 2019-05-29 다이니폰 인사츠 가부시키가이샤 Deposition mask, frame deposition mask, deposition mask preparation body, deposition pattern formation method, organic semiconductor element manufacturing method, organic EL display manufacturing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0463095U (en) * 1990-10-05 1992-05-29
KR20170107988A (en) 2015-02-03 2017-09-26 다이니폰 인사츠 가부시키가이샤 Vapor-deposition mask manufacturing method, vapor- deposition mask manufacturing device, laser mask, and organic semiconductor element manufacturing method
KR20190058450A (en) 2016-09-30 2019-05-29 다이니폰 인사츠 가부시키가이샤 Deposition mask, frame deposition mask, deposition mask preparation body, deposition pattern formation method, organic semiconductor element manufacturing method, organic EL display manufacturing method

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