JPS5582395A - Light detecting circuit - Google Patents

Light detecting circuit

Info

Publication number
JPS5582395A
JPS5582395A JP15419478A JP15419478A JPS5582395A JP S5582395 A JPS5582395 A JP S5582395A JP 15419478 A JP15419478 A JP 15419478A JP 15419478 A JP15419478 A JP 15419478A JP S5582395 A JPS5582395 A JP S5582395A
Authority
JP
Japan
Prior art keywords
detecting circuit
light detecting
light
circuit
detecting
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
JP15419478A
Other languages
Japanese (ja)
Inventor
Takashi Ishikawa
Fumio Mita
Shiyouichi Kurita
Seiji Terai
Hideki Noda
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15419478A priority Critical patent/JPS5582395A/en
Publication of JPS5582395A publication Critical patent/JPS5582395A/en
Pending legal-status Critical Current

Links

Landscapes

  • Burglar Alarm Systems (AREA)
  • Fire-Detection Mechanisms (AREA)
JP15419478A 1978-12-15 1978-12-15 Light detecting circuit Pending JPS5582395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15419478A JPS5582395A (en) 1978-12-15 1978-12-15 Light detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15419478A JPS5582395A (en) 1978-12-15 1978-12-15 Light detecting circuit

Publications (1)

Publication Number Publication Date
JPS5582395A true JPS5582395A (en) 1980-06-21

Family

ID=15578883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15419478A Pending JPS5582395A (en) 1978-12-15 1978-12-15 Light detecting circuit

Country Status (1)

Country Link
JP (1) JPS5582395A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57193891A (en) * 1981-05-25 1982-11-29 Kobishi Electric Co Ltd Photoelectric type alarm circuit
JPS5949691A (en) * 1982-09-14 1984-03-22 綜合警備保障株式会社 Optical gate monitor
JPS5949690A (en) * 1982-09-14 1984-03-22 綜合警備保障株式会社 Optical burglar-proof gate device
JPS59500536A (en) * 1982-03-31 1984-03-29 グ−ルド　インコ−ポレイテツド Intrusion detection device using optical fiber acoustic transducer
JPS6030083U (en) * 1983-07-29 1985-02-28 能美防災株式会社 intrusion detector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5070071A (en) * 1973-10-24 1975-06-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5070071A (en) * 1973-10-24 1975-06-11

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57193891A (en) * 1981-05-25 1982-11-29 Kobishi Electric Co Ltd Photoelectric type alarm circuit
JPS59500536A (en) * 1982-03-31 1984-03-29 グ−ルド　インコ−ポレイテツド Intrusion detection device using optical fiber acoustic transducer
JPS5949691A (en) * 1982-09-14 1984-03-22 綜合警備保障株式会社 Optical gate monitor
JPS5949690A (en) * 1982-09-14 1984-03-22 綜合警備保障株式会社 Optical burglar-proof gate device
JPS6030083U (en) * 1983-07-29 1985-02-28 能美防災株式会社 intrusion detector

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