US 12,326,400 B2
Measuring device for measuring the absorption of gases
Arne Tröllsch, Lübeck (DE)
Assigned to DRÄGER SAFETY AG & CO. KGAA, Lübeck (DE)
Filed by DRÄGER SAFETY AG & CO. KGAA, Lübeck (DE)
Filed on Feb. 16, 2022, as Appl. No. 17/673,362.
Application 17/673,362 is a continuation of application No. 16/327,058, granted, now 11,385,172, previously published as PCT/EP2017/000980, filed on Aug. 16, 2017.
Claims priority of application No. 10 2016 010 088.5 (DE), filed on Aug. 23, 2016.
Prior Publication US 2022/0170851 A1, Jun. 2, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 21/3504 (2014.01); G01N 21/03 (2006.01); G01N 21/31 (2006.01)
CPC G01N 21/3504 (2013.01) [G01N 21/031 (2013.01); G01N 2021/3137 (2013.01); G01N 2201/066 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A measuring device for measuring the absorption of gases, the measuring device comprising:
a radiation source;
a first detector element;
a second detector element; and
a reflector array, the reflector array defining a first optical path between the radiation source and the first detector element and the reflector array defining a second optical path between the radiation source and the second detector element, the first optical path and the second optical path being located in different planes, wherein the first optical path has at least two points of intersection with itself, the first plane being defined by the radiation source and the at least two points of intersection of the first optical path, the second detector element being arranged outside of the first plane, the same radiation source being configured to emit at least a first beam of radiation along the first optical path such the beam of radiation intersects itself at least twice, wherein the second optical path has no point of intersection with itself, the same radiation source being configured to emit at least a second beam along the second optical path such the second beam has no point of intersection with itself.