发明名称 |
ATTENUATION TYPE SMOKE DETECTOR |
摘要 |
PURPOSE:To compensate the attenuation of light owing to factors other than smoke and enable stable detection operation to be performed by dividing the inside of a housing longitudinally in two compartments, and disposing a light emitting device in the focal position of one of parabolic face mirrors and a photo detector on the other. |
申请公布号 |
JPS5280880(A) |
申请公布日期 |
1977.07.06 |
申请号 |
JP19750156097 |
申请日期 |
1975.12.27 |
申请人 |
MATSUSHITA ELECTRIC WORKS LTD |
发明人 |
MORISUE KAZUNARI;MATSUMOTO SHIGERU;KATAZUKI KUNIHARU |
分类号 |
G08B17/103;G01N21/53;G08B17/10 |
主分类号 |
G08B17/103 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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