JPH0714949Y2 - 光遮断式検出器 - Google Patents

光遮断式検出器

Info

Publication number
JPH0714949Y2
JPH0714949Y2 JP1989026282U JP2628289U JPH0714949Y2 JP H0714949 Y2 JPH0714949 Y2 JP H0714949Y2 JP 1989026282 U JP1989026282 U JP 1989026282U JP 2628289 U JP2628289 U JP 2628289U JP H0714949 Y2 JPH0714949 Y2 JP H0714949Y2
Authority
JP
Japan
Prior art keywords
light
signal
modulated
frequency
pll
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
JP1989026282U
Other languages
English (en)
Japanese (ja)
Other versions
JPH02118287U (enrdf_load_stackoverflow
Inventor
敏男 池川
愼二 小林
博 本間
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.)
Hochiki Corp
Original Assignee
Hochiki 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 Hochiki Corp filed Critical Hochiki Corp
Priority to JP1989026282U priority Critical patent/JPH0714949Y2/ja
Publication of JPH02118287U publication Critical patent/JPH02118287U/ja
Application granted granted Critical
Publication of JPH0714949Y2 publication Critical patent/JPH0714949Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Burglar Alarm Systems (AREA)
JP1989026282U 1989-03-08 1989-03-08 光遮断式検出器 Expired - Lifetime JPH0714949Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989026282U JPH0714949Y2 (ja) 1989-03-08 1989-03-08 光遮断式検出器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989026282U JPH0714949Y2 (ja) 1989-03-08 1989-03-08 光遮断式検出器

Publications (2)

Publication Number Publication Date
JPH02118287U JPH02118287U (enrdf_load_stackoverflow) 1990-09-21
JPH0714949Y2 true JPH0714949Y2 (ja) 1995-04-10

Family

ID=31247768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989026282U Expired - Lifetime JPH0714949Y2 (ja) 1989-03-08 1989-03-08 光遮断式検出器

Country Status (1)

Country Link
JP (1) JPH0714949Y2 (enrdf_load_stackoverflow)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015157U (enrdf_load_stackoverflow) * 1973-06-01 1975-02-18
JPS6120544Y2 (enrdf_load_stackoverflow) * 1979-05-31 1986-06-20
JPS5921132A (ja) * 1982-07-27 1984-02-03 Matsushita Electric Ind Co Ltd インタ−ホン装置

Also Published As

Publication number Publication date
JPH02118287U (enrdf_load_stackoverflow) 1990-09-21

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