US 11,686,673 B2
NDIR detector device for detecting gases having an infrared absorption spectrum
Maria Eloisa Castagna, Catania (IT); Salvatore Cascino, Gravina di Catania (IT); Viviana Cerantonio, Acireale (IT); and Antonello Santangelo, Belpasso (IT)
Assigned to STMICROELECTRONICS S.r.l., Agrate Brianza (IT)
Filed by STMICROELECTRONICS S.r.l., Agrate Brianza (IT)
Filed on Mar. 30, 2021, as Appl. No. 17/217,662.
Application 17/217,662 is a continuation of application No. 16/584,808, filed on Sep. 26, 2019, granted, now 11,079,321.
Claims priority of application No. 102018000009037 (IT), filed on Sep. 28, 2018.
Prior Publication US 2021/0215600 A1, Jul. 15, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 21/3504 (2014.01)
CPC G01N 21/3504 (2013.01) 20 Claims
OG exemplary drawing
 
1. A device, comprising:
a support having a bearing surface;
a spacer body coupled to the bearing surface of the support, the spacer body having an emission opening and a reception opening, the reception opening including a first radiation-limitation wall portion, and the first radiation-limitation wall portion includes a first side and a second side opposite to the first side, the first and second sides are transverse to the bearing surface, the emission opening is on the first side of the first radiation-limitation wall portion, and the reception opening is on the second side of the first-radiation limitation wall portion and is closer to the first-radiation limitation wall portion than the emission opening;
a mirror element coupled to the spacer body, the mirror element having a reflecting surface;
a light-emitting element on the bearing surface in the emission opening and facing the reflecting surface; and
a light-receiving element on the bearing surface in the reception opening and facing the reflecting surface.