公开(公告)号：AU2015359174A1

公开(公告)日：2017-07-06

申请号：AU2015359174

申请日：2015-12-11

Applicant: BERTIN TECHNOLOGIES SA

Inventor： MORIN NATHALIE ,  BERNASCOLLE PHILIPPE ,  FERVEL FRANCK

IPC: G01J3/02 ,  G01J3/12 ,  G01J3/36 ,  G02B17/00 ,  G02B27/10

Abstract: The invention relates to an optical filtering device (10), in particular for detecting gas remotely, comprising a member (22, 24, 26) including a tubular passage housing a plurality of reflecting structures (34a, 34b, 34c, 34d) that are able to reflect infrared wavelengths, said structures (34a, 34b, 34c, 34d) being elongate along the axis of the tubular passage and placed about this axis. According to the invention, the reflective structures (34a, 34b, 34c, 34d) comprise means for filtering by absorption different wavelength bands located in the infrared spectral band.