US 11,940,383 B2
Method and system for detecting inclusions in float glass based on spectral reflectance analysis
Okan Agbuga, Berlin (DE)
Assigned to Guardian Glass, LLC, Auburn Hills, MI (US)
Filed by Guardian Glass, LLC, Auburn Hills, MI (US)
Filed on Apr. 1, 2021, as Appl. No. 17/220,089.
Application 17/220,089 is a continuation in part of application No. PCT/IB2019/058398, filed on Oct. 2, 2019.
Application PCT/IB2019/058398 is a continuation of application No. 16/148,057, filed on Oct. 1, 2018, granted, now 10,481,097, issued on Nov. 19, 2019.
Prior Publication US 2021/0215614 A1, Jul. 15, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 21/552 (2014.01); C03B 18/18 (2006.01); C03C 3/087 (2006.01); C03C 4/02 (2006.01); C03C 4/08 (2006.01); G01N 21/65 (2006.01)
CPC G01N 21/658 (2013.01) [C03B 18/18 (2013.01); C03C 3/087 (2013.01); C03C 4/02 (2013.01); C03C 4/082 (2013.01); C03C 4/085 (2013.01); G01N 21/552 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
directing light from at least one light source toward soda-lime-silica based glass on a float glass line; and
determining whether a nickel sulfide related defect is present in the glass based on an emitted value, a refracted value, a re-emitted value, a transmitted value, or a reflectance value,
wherein at least one of the emitted value, the refracted value, the re-emitted value, the transmitted value, and the reflectance value is outside of the visible spectrum.