发明名称 |
OPTICAL PARTICLE DETECTOR |
摘要 |
An optical particle detector is disclosed using a dark field optical system in which an air sample is illuminated and forward scattered light is collected in a zone centered about but excluding on-axis light. The collected light is then sensed to detect the presence of air borne light scattering particles. Particles of greatest interest are smoke particles. The system includes a self-contained light source and a photo detector suitable for operation by a dry cell. The optics are designed for high light gathering efficiency consistent with minimum space requirements and the internal design minimizes scattered light to achieve maximum smoke detection sensitivity. |
申请公布号 |
JPS5548640(A) |
申请公布日期 |
1980.04.07 |
申请号 |
JP19790115799 |
申请日期 |
1979.09.11 |
申请人 |
GEN ELECTRIC |
发明人 |
ROORENSU RICHIYAADO SUNOUMAN |
分类号 |
G01N21/53;G01N15/00;G01V8/12;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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