公开(公告)号：US20170336322A1

公开(公告)日：2017-11-23

申请号：US15534571

申请日：2015-12-11

Applicant: BERTIN TECHNOLOGIES

Inventor： NATHALIE MORIN ,  PHILIPPE BERNASCOLLE ,  FRANCK FERVEL ,  GUILLAUME DRUART

IPC: G01N21/3518

CPC classification number: G01N21/3518 ,  G01J3/0205 ,  G01J3/36 ,  G01J2003/1213 ,  G02B5/008 ,  G02B5/22 ,  G02B17/006 ,  G02B27/106 ,  G02B27/1066

Abstract: An optical filtering device, in particular for remote gas detection, including a member comprising a tubular passage accommodating a plurality of reflective structures capable of reflecting infrared wavelengths, said structures being elongated along an axis of the tubular passage and arranged around the axis. The reflective structures comprise means of filtering by absorption of bands of different wavelengths located in the infrared spectral band.