Patent ID: 11971370
Assignee: CANON ANELVA CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 13:
14. An inspection method of inspecting an inspection target surface arranged on an inspection plane, comprising:
an adjustment step of adjusting a relative position between the inspection plane and the inspection target surface;
an X-ray detection step of, after the adjustment step, emitting X-rays to the inspection plane and detecting, by an X-ray detector, X-rays emitted from a foreign substance existing on the inspection target surface and totally reflected by the inspection target surface; and
a processing step of processing an output of the X-ray detector, wherein
the adjustment step includes
a step of measuring a position of the inspection target surface, and
a step of displacing the X-ray detector toward or away from a plane defined by the inspection target surface, in accordance with the measurement of the position of the inspection target surface.