[특허]Passive and active infrared analysis gas sensors and applicable multichannel detector assembles

Passive and active infrared analysis gas sensors and applicable multichannel detector assembles 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01N-021/35 G01N-021/61
출원번호	US-0583993 (1996-01-11)
발명자 / 주소	Wong Jacob Y.
출원인 / 주소	Engelhard Sensor Technologies Inc.
대리인 / 주소	Lyon & Lyon LLP
인용정보	피인용 횟수 : 81 인용 특허 : 0

초록 ▼

Multichannel infrared detector assemblies for use in the detection and monitoring of gas concentrations are provided. The detector assemblies include a detector housing having a port for receiving infrared radiation therethrough; a substrate mounted within the detector housing, the substrate having three apertures therein to transmit radiation entering the detector assembly therethrough; a first, a second and a third thermopile detector fabricated on the bottom side of the substrate, the hot junctions of each thermopile detector positioned over one of the apertures in the substrate so as to receive radiation transmitted through the aperture, and the cold junctions of each thermopile detector positioned over the substrate; a first interference bandpass filter mounted on the top side of the substrate so that the first filter covers the aperture above the first detector and the first filter is interposed between the port and the first detector, the first interference bandpass filter designed to pass incident radiation at a first spectral band; a second interference bandpass filter mounted on the top side of the substrate so that the second filter covers the aperture above the second detector and the second filter is interposed between the port and the second detector, the second interference bandpass filter designed to pass radiation at a second spectral band; and a third interference bandpass filter mounted on the top side of the substrate so that the third filter covers the aperture above the third detector and the third filter is interposed between the port and the third detector, the third interference bandpass filter designed to pass radiation at a third spectral band. The disclosed infrared detector assemblies can be used in traditional NDIR gas sensors having an active source or in passive infrared analysis gas sensors which use a passive infrared temperature source and the space between the detector assembly and the source as the sample chamber.

대표청구항 ▼

[ I claim:] [1.] An infrared detector assembly comprising:a. a detector housing having a port for receiving infrared radiation therethrough;b. a substrate mounted within the detector housing, the substrate having three apertures therein;c. a first, a second and a third thermopile detector fabricated on the bottom side of the substrate, the hot junctions of each thermopile detector positioned over one of the apertures in the substrate so as to receive radiation transmitted through the aperture, and the cold junctions of each thermopile detector positioned over the substrate;d. a first interference bandpass filter mounted on the top side of the substrate so that the first filter covers the aperture above the first detector and the first filter is interposed between the port and the first detector, the first interference bandpass filter designed to pass incident radiation at a first spectral band;e. a second interference bandpass filter mounted on the top side of the substrate so that the second filter covers the aperture above the second detector and the second filter is interposed between the port and the second detector, the second interference bandpass filter designed to pass radiation at a second spectral band; andf. a third interference bandpass filter mounted on the top side of the substrate so that the third filter covers the aperture above the third detector and the third filter is interposed between the port and the third detector, the third interference bandpass filter designed to pass radiation at a third spectral band. [35.] A passive source infrared gas sensor, comprising:a passive infrared source comprising an infrared black surface;b. a three channel infrared detector assembly centered in the passive infrared source, the detector assembly having a port for receiving infrared radiation therethrough; andc. a concave mirror facing the port of the detector assembly and the infrared black surface, the concave mirror being positioned such that radiation emitted from the passive infrared source is reflected from the mirror into the port.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Passive and active infrared analysis gas sensors and applicable multichannel detector assembles 원문보기

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Passive and active infrared analysis gas sensors and applicable multichannel detector assembles 원문보기

초록 ▼

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연구과제 타임라인

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이 특허를 인용한 특허 (81)

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