|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||250/343; 250/345; 250/33912; 250/33913; 250/3383|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 54 인용 특허 : 13|
An NDIR sensor includes a cylindrical metallic tube, a printed circuit board platform that fits into one end of the tube, a diffusion filter that fits into the opposite end of the tube, and an optical system. The optical system includes an infrared source on the platform, a mirror on the inner wall of the tube so as to reflect and focus the infrared light from the infrared source, and a detector assembly that receives the infrared light after reflection. The gas sensor may further include a partition between the infrared source and the detector assembly,...
1. A gas sensor comprising:a tube having an inner wall that includes a reflective portion; a platform in a first end of the tube; a filter in a second end of the tube, wherein the filter allows gas to enter through the filter into the tube; an infrared source on the platform; and a detector assembly on the platform and positioned to receive infrared light from the infrared source after reflection from the reflective portion of the inner wall.