Patent ID: 11964435
Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC B  G  Y | IPC B  G

Claim 17:
18. The system according to claim 10, wherein the at least one processor is further configured to:
obtain a second image of a consolidated material layer from scanning the consolidated material layer in a second scanning direction, opposite to the first scanning direction, using the first contact image sensor, the consolidated material layer being formed with respect to the powder bed layer, or obtain a second image of a consolidated material layer from scanning the consolidated material layer in the first scanning direction using the second contact image sensor, the consolidated material layer being formed with respect to an immediately previous powder bed layer and the second contact image sensor being attached to the powder re-coater arm at an opposite side thereof with respect to the first contact image sensor;
determine a focus level property of the second image; and
detect non-uniformities in the consolidated material layer based on the focus level property of the second image.