Patent ID: 11933717
Assignee: KLA CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 8:
9. The metrology system of claim 1, wherein the one or more optics comprise a slit array positioned to pass light to every Nth pixel row of the TDI sensor and block remaining pixel rows of the TDI sensor, wherein the metrology tool is configured to perform a scanning mode measurement by:
translating the sample at a charge transfer rate of the TDI sensor along a scan direction perpendicular to the pixel rows;
sequentially providing the N optical configurations for imaging the sample, wherein a switching time between successive optical configurations of the multi-channel imaging sub-system corresponds to the charge transfer rate of the TDI sensor;
generating, with the TDI sensor, an interleaved image including the N images during the exposure window; and
separating the interleaved image into the N images.