US 12,298,235 B2
Seamless integrating cavity of monolithic fumed silica
Thomas Moore, San Antonio, TX (US); Kurt D. Retherford, San Antonio, TX (US); and Charity Phillips-Lander, San Antonio, TX (US)
Assigned to Southwest Research Institute, San Antonio, TX (US)
Filed by Southwest Research Institute, San Antonio, TX (US)
Filed on Apr. 25, 2024, as Appl. No. 18/645,967.
Application 18/645,967 is a division of application No. 17/734,830, filed on May 2, 2022, granted, now 11,971,347.
Application 17/734,830 is a division of application No. 17/245,987, filed on Apr. 30, 2021, granted, now 11,346,771, issued on May 31, 2022.
Prior Publication US 2024/0272068 A1, Aug. 15, 2024
Int. Cl. G01N 21/31 (2006.01); G01N 21/85 (2006.01)
CPC G01N 21/31 (2013.01) [G01N 21/85 (2013.01); G01N 2201/0612 (2013.01); G01N 2201/0636 (2013.01); G01N 2201/08 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A measurement system for ascertaining optical characteristics of a sample item, the system comprising:
a seamless integrating cavity device employing a cavity defined by a liner of fused quartz over a fumed silica monolith sandwiched in an air-tight manner between the liner and an outer housing, the device having an inlet through the material and to the cavity for receipt of the sample item;
a light source to supply light to the cavity for scattering by the monolith; and
a spectral detector to acquire scattered light readings from the cavity for sample item analysis.