GAS DETECTOR

• Main Authors: FURUYA TAKAAKI, ISSHIKI SHOTA
• Format: Patent
• Language: English; Japanese
• Published: 12.10.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; SEMICONDUCTOR DEVICES; TESTING

To provide a gas detector capable of outputting a highly stable detection signal.SOLUTION: A gas detector 1 comprises: a light-emitting section 10 that emits light in a wavelength band including a wavelength absorbed by gas to be detected; a light-receiving section 20 having sensitivity in the wavelength band; a package 40 including the light-emitting section 10 and the light-receiving section 20; a light guide section 50 that guides the light to the light-receiving section 20; a joint section 60 that joins the package 40 and the light guide section 50; and a heat insulating section 70 provided in a gap between the package 40 and the light guide section 50. A part of a surface of the package 40 which faces the light guide section 50 has a proximate region D in which distance between the package 40 and the light guide section 50 is equal to or less than 500 μm, and at least a part of the heat insulating section 70 and at least a part of the joint section 60 are provided adjacent to a part of the proximate region D.SELECTED DRAWING: Figure 1 【課題】安定性の高い検出信号を出力することが可能なガス検出装置を提供する。【解決手段】ガス検出装置１は、被検出ガスにより吸収される波長を含む波長帯域の光を発光する発光部１０と、波長帯域に感度を有する受光部２０と、発光部１０、および受光部２０を内包するパッケージ４０と、光を受光部２０へ導く導光部５０と、パッケージ４０と導光部５０とを接合する接合部６０と、パッケージ４０と導光部５０との間の隙間に設けられる熱絶縁部７０と、を備え、パッケージ４０の導光部５０と対向する面の一部は、パッケージ４０と導光部５０との距離が５００μｍ以下となる近接領域Ｄを有し、熱絶縁部７０の少なくとも一部と接合部６０の少なくとも一部は、近接領域Ｄの一部に隣接して設けられる。【選択図】図１