发明名称 |
GAS DETECTION APPARATUS USING A COMBINED INFRARED SOURCE ANDHIGH TEMPERATURE BOLOMETER |
摘要 |
An improved gas detector apparatus (100) includes a spectral source/bolomete r (102) for conducting an electrical current and for producing infrared radiation. The source/bolometer has a characteristic resistance that is a predetermined function of the source/bolometer temperature. A concentrating reflector (104) directs the infrared radiation through a spectral filter (106) and the gas. A return reflector (108) is disposed along the axis beyond the spectral filter and the gas, such that at least a portion of the infrared radiation passing through the filter and the gas is reflected back through the gas and the filter to the source/bolometer. A driver/detector (110) drives a current through the source/bolometer, determines the characteristic resistance of the source/bolometer, and detects the gas from a variation of the characteristic resistance.
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申请公布号 |
CA2312706(C) |
申请公布日期 |
2009.07.07 |
申请号 |
CA19982312706 |
申请日期 |
1998.12.04 |
申请人 |
ION OPTICS, INC. |
发明人 |
JOHNSON, EDWARD A.;BODKIN, WILLIAM ANDREW |
分类号 |
G01N21/61;G01J5/08;G01J5/20;G01J5/24;G01N21/35 |
主分类号 |
G01N21/61 |
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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