发明名称 |
Spectrophotometric sensor assembly including a microlamp |
摘要 |
A spectrophotometric sensor assembly that may find particular use in a capnometer, a medical device for measuring the concentration of carbon dioxide in the exhaled breath of a patient, includes at least one microlamp. A microlamp is a very small source of electromagnetic radiation including a heated filament disposed over a substrate. The microlamp may be constructed using semiconductor fabrication techniques. The microlamp typically emits broad-band infrared radiation. Radiation from the microlamp usually passes through a filter, which preferentially transmits radiation of a preselected wavelength. The radiation then passes through a sample chamber and onto a detector. The concentration of a substance of interest within the chamber may be computed by determining the degree to which the radiation is absorbed in the chamber. In a preferred embodiment, an array of microlamps is sequentially triggered in a rapid manner.
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申请公布号 |
US5401966(A) |
申请公布日期 |
1995.03.28 |
申请号 |
US19930115535 |
申请日期 |
1993.09.02 |
申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
GRAY, DAMIEN F.;PLTTARO, RICHARD J.;LUM, PAUL K. |
分类号 |
A61B5/083;G01J3/10;G01N21/35;(IPC1-7):G01N21/61 |
主分类号 |
A61B5/083 |
代理机构 |
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地址 |
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