US 11,953,434 B2
Spectroscopic devices, systems, and methods for optical sensing of molecular species
Mark Zondlo, Princeton, NJ (US); Lei Tao, Plainsboro, NJ (US); Da Pan, Jersey City, NJ (US); Josh Collins, Wallingford, NJ (US); Paul Guiguizian, Princeton, NJ (US); Howard Y. Bell, Princeton, NJ (US); Alice Margaret Sophie Elliott, Amsterdam (NL); Patrick Minter Killough, Houston, TX (US); Bernardus Maria Geertshuis, Amsterdam (NL); and Herie Javier Soto, Katy, TX (US)
Assigned to SHELL OIL COMPNY, Houston, TX (US); and THE TRUSTEES OF PRINCETON UNIVERSITY, Princeton, NJ (US)
Appl. No. 17/432,665
Filed by The Trustees of Princeton University, Princeton, NJ (US)
PCT Filed Feb. 21, 2020, PCT No. PCT/US2020/019239
§ 371(c)(1), (2) Date Aug. 20, 2021,
PCT Pub. No. WO2020/172541, PCT Pub. Date Aug. 27, 2020.
Claims priority of provisional application 62/809,249, filed on Feb. 22, 2019.
Prior Publication US 2022/0187203 A1, Jun. 16, 2022
Int. Cl. G01N 21/39 (2006.01); G01J 3/42 (2006.01); G01J 3/433 (2006.01); G01N 21/27 (2006.01); G01N 21/31 (2006.01); G01N 21/552 (2014.01)
CPC G01N 21/39 (2013.01) [G01J 3/42 (2013.01); G01J 3/433 (2013.01); G01N 21/274 (2013.01); G01N 21/552 (2013.01); G01N 2021/3129 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A spectroscopic device for detecting one or more gas species of interest in a gas sample, the device comprising:
a sensing unit that comprises:
a light source module,
a detector module, and
a sample cell between the light source module and the detector module;
wherein the light source module comprises a light source module housing and a light source that is configured to transmit an interrogation light beam along an optical path directed toward the detector module;
wherein the detector module comprises a detector module housing, a detector, and a reference gas;
wherein said detector is in the detector module housing;
wherein the detector is positioned in the optical path such that the optical path extends from the light source through the sample cell and the reference gas toward the detector.