JPS6390744U - - Google Patents

Info

Publication number

JPS6390744U

JPS6390744U JP18331786U JP18331786U JPS6390744U JP S6390744 U JPS6390744 U JP S6390744U JP 18331786 U JP18331786 U JP 18331786U JP 18331786 U JP18331786 U JP 18331786U JP S6390744 U JPS6390744 U JP S6390744U

Authority

JP

Japan

Prior art keywords

types

flame detector

polarizing filters

optical sensor

changing

Prior art date

1986-11-28

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

• 230000003287 optical effect Effects 0.000 claims description 2
• 238000002485 combustion reaction Methods 0.000 claims 1
• 238000002834 transmittance Methods 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 4
• 239000013307 optical fiber Substances 0.000 description 1