Patent ID: 11940739
Assignee: ASML NETHERLANDS B.V.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A metrology system for analyzing a substrate comprising a plurality of targets and a plurality of fields, the metrology system comprising:
an array comprising a plurality of array elements, wherein each array element of the plurality of array elements is configured to be aligned with a corresponding field of the plurality of fields, and wherein each array element comprises:
an illumination optical system configured to illuminate a corresponding target of the plurality of targets, wherein the corresponding target is disposed at the corresponding field; and
a detection optical system comprising:
a lens configured to direct a portion of illumination scattered from the corresponding target; and
a detection optical sensor configured to receive the directed portion of illumination scattered from the corresponding target and to generate information associated with the illumination scattered from the corresponding target,

wherein the illumination optical system and the detection optical system together have a footprint less than an area of the corresponding field of the substrate.