US 12,235,207 B2
Multipass cell
Patrick Lancuba, Fitchburg, WI (US)
Assigned to Thermo Fisher Scientific (Ecublens) SARL, Ecublens (CH)
Appl. No. 17/906,387
Filed by THERMO FISHER SCIENTIFIC (ECUBLENS) SARL, Ecublens (CH)
PCT Filed Mar. 18, 2021, PCT No. PCT/EP2021/056971
§ 371(c)(1), (2) Date Sep. 15, 2022,
PCT Pub. No. WO2021/185977, PCT Pub. Date Sep. 23, 2021.
Claims priority of application No. 2003949 (GB), filed on Mar. 18, 2020.
Prior Publication US 2023/0125832 A1, Apr. 27, 2023
Int. Cl. G01N 21/03 (2006.01); G01J 3/02 (2006.01); G01J 3/42 (2006.01); G01N 21/55 (2014.01)
CPC G01N 21/031 (2013.01) [G01J 3/0291 (2013.01); G01J 3/42 (2013.01); G01N 21/55 (2013.01); G01N 2021/551 (2013.01)] 32 Claims
OG exemplary drawing
 
1. A multipass cell comprising:
a first reflector arrangement; and
a second reflector arrangement, the first and second reflector arrangements defining an optical cavity therebetween and the cell;
wherein the first reflector arrangement is configured such that light incident on the first reflector arrangement is at least partially retroreflected towards the second reflector arrangement, wherein the second reflector arrangement comprises a concave surface that is reflective, wherein the first reflector arrangement comprises an aperture for allowing light to enter and exit the optical cavity.