JPH01145897U - - Google Patents

Info

Publication number

JPH01145897U

JPH01145897U JP4320288U JP4320288U JPH01145897U JP H01145897 U JPH01145897 U JP H01145897U JP 4320288 U JP4320288 U JP 4320288U JP 4320288 U JP4320288 U JP 4320288U JP H01145897 U JPH01145897 U JP H01145897U

Authority

JP

Japan

Prior art keywords

light

optical path

signal

alarm

outputted

Prior art date

1988-03-31

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

Links

• Espacenet
• Global Dossier
• Discuss

• 239000013307 optical fiber Substances 0.000 claims description 3
• 230000003287 optical effect Effects 0.000 claims 7
• 238000010586 diagram Methods 0.000 description 2
• 238000007796 conventional method Methods 0.000 description 1
• 238000000034 method Methods 0.000 description 1

Cited By (2)