Patent ID: 11872743
Assignee: AGR INTERNATIONAL, INC.
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 11:
12. A method for inspecting a transparent hollow article, the method comprising:
emitting light energy, by at least one light source, at a portion of the transparent hollow article as the transparent hollow article moves along a travel path past the at least one light source, wherein the light energy emitted by the at least one light source comprises:
light energy at a first, absorption wavelength that is primarily absorbed by the portion of the transparent hollow article; and
light energy at a second, reference wavelength that is not primarily absorbed by the portion of the transparent hollow article;

sensing, by at least one light sensor, light energy emitted by the at least one light source that is reflected by the portion of the transparent hollow article to the at least one light sensor, wherein the at least one light sensor is on the same side of the travel path of the transparent hollow article as the at least one light source; and
computing, by a processor in communication with the at least one light energy sensor, a wall thickness of the portion of the transparent hollow article based on an intensity of light energy sensed by the at least one light energy sensor.