发明名称 |
Allergen detector system and method |
摘要 |
An allergen particle detecting apparatus has a passageway through which environmental air is directed. A light beam is directed across the passageway so that portions of the beam will be scattered if any particles are present in the path of the beam. A beam blocking device on the opposite side of the passageway blocks any non-scattered portion of the beam while transmitting any scattered portions of the beam along a light path in the apparatus. Any light scattered by allergen size particles will be traveling in a predetermined angular range, and a pinhole device is positioned in the light path so as to transmit only light traveling in that angular range. Light transmitted through the pinhole device is detected by a light detector and an alarm output signal is produced if the detected amount of light is above a predetermined level.
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申请公布号 |
US5646597(A) |
申请公布日期 |
1997.07.08 |
申请号 |
US19960679706 |
申请日期 |
1996.07.11 |
申请人 |
HAMBURGER, ROBERT N. |
发明人 |
HAMBURGER, ROBERT N.;WANG, RUIBO;JIANG, JIEN-PING |
分类号 |
G01N15/02;G01N21/53;(IPC1-7):G08B21/00 |
主分类号 |
G01N15/02 |
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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