Patent ID: 11940383
Assignee: GUARDIAN GLASS, LLC
Field: Measurement (Instruments)
Classification: CPC C  G | IPC C  G

Claim 3:
4. A method of detecting an inclusion in glass, the glass including a base glass composition comprising:, Ingredient
wt. %

SiO2
67-75%

Na2O
10-20%

CaO
 5-15%

Al2O3
0-7%

K2O
0-7%

the method comprising:
directing energy from at least one source toward the glass, the directed energy causing reflectance from the glass, the at least one source being located above the glass;
obtaining, from the reflectance, at least one of an emitted value, a refracted value, a re-emitted value, a transmitted value, and a reflectance value in the infrared (IR) spectrum; and
determining whether an inclusion is present in the glass based on at least one of the emitted value, the refracted value, the re-emitted value, the transmitted value, and the reflectance value.