Patent ID: 11940264
Assignee: ASML NETHERLANDS B.V.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. The method according to claim 9, wherein the steps a., b., and c. are repeated for a second position of the object in the Z-direction, such that the first data set also comprises the first position signal and the second position signal for each of the plurality of positions of the object in the Y-direction while the object is in the first rotational orientation and in the second position, and such that the second data set also comprises the first position signal and the second position signal for each of the plurality of positions of the object in the Y-direction while the object is in the second rotational orientation and in the second position, and wherein in step d. the first data set and the second data set are further used to determine a shape of the first mirror and/or the second mirror in the Z-direction.