US 11,703,500 B2
Methods of characterizing ion-exchanged chemically strengthened glasses containing lithium
Rostislav Vatchev Roussev, Painted Post, NY (US); and Vitor Marino Schneider, Painted Post, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Jul. 26, 2022, as Appl. No. 17/873,495.
Application 17/873,495 is a division of application No. 17/169,900, filed on Feb. 8, 2021, granted, now 11,402,366.
Application 17/169,900 is a division of application No. 16/247,078, filed on Jan. 14, 2019, granted, now 10,914,721, issued on Feb. 9, 2021.
Application 16/247,078 is a continuation of application No. 15/171,490, filed on Jun. 2, 2016, granted, now 10,180,416, issued on Jan. 15, 2019.
Claims priority of provisional application 62/170,919, filed on Jun. 4, 2015.
Prior Publication US 2022/0373532 A1, Nov. 24, 2022
Int. Cl. G01N 33/38 (2006.01); C03C 21/00 (2006.01); G01L 1/00 (2006.01)
CPC G01N 33/386 (2013.01) [C03C 21/002 (2013.01); G01L 1/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of improving a functionality of a prism-coupling system having a controller to perform quality control of a chemically strengthened lithium-containing glass sample, the method comprising:
a) measuring a mode spectrum of the chemically strengthened lithium-containing glass sample using the prism-coupling system;
b) using the controller, determining a non-integer part of a number of modes of the mode spectrum; and
c) comparing the non-integer part of the number of modes to a non-integer part of the number of modes specification to determine whether the chemically strengthened lithium-containing glass sample satisfies a quality control specification, wherein the non-integer part of the number of modes specification is from greater than or equal to 0.1 to less than or equal to 0.6.