发明名称 |
PHOTOELECTRIC SMOKE SENSOR |
摘要 |
PURPOSE:To provide a photoelectric smoke sensor, in which two light receiving elements are disposed such that they form different scattering angles to luminous flux of one single luminous element, whereby ratio B/W of light outputs to black and white smokes is greatly improved and sensitivity to black smoke is also improved. |
申请公布号 |
JPS5299874(A) |
申请公布日期 |
1977.08.22 |
申请号 |
JP19760016311 |
申请日期 |
1976.02.16 |
申请人 |
MATSUSHITA ELECTRIC WORKS LTD |
发明人 |
MATSUMOTO SHIGERU;MORISUE KAZUNARI;KATAZUKI KUNIHARU |
分类号 |
G01N21/53;G08B17/10;G08B17/107 |
主分类号 |
G01N21/53 |
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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