Invention Grant
- Patent Title: Method for determining a distance between a first structure element on a substrate and a second structure element
-
Application No.: US15713042Application Date: 2017-09-22
-
Publication No.: US10535132B2Publication Date: 2020-01-14
- Inventor: Joerg Frederik Blumrich
- Applicant: Carl Zeiss SMT GmbH
- Applicant Address: DE Oberkochen
- Assignee: Carl Zeiss SMT SmbH
- Current Assignee: Carl Zeiss SMT SmbH
- Current Assignee Address: DE Oberkochen
- Agency: Fish & Richardson P.C.
- Priority: DE102016218452 20160926
- Main IPC: G06T7/00
- IPC: G06T7/00 ; G03F1/84 ; G02B21/36 ; G02B21/14 ; G06T7/55 ; G06T7/13

Abstract:
Provision is made of a method for determining a distance between a first structure element on a substrate and a second structure element, comprising the following steps: providing a first series of first images, wherein each of the first images comprises at least the first structure element, providing a second series of second images, wherein each of the second images comprises at least the second structure element. The method includes, for each image of the first and second series: determining a respective correlation function from a respective first image of the first series and a respective second image of the second series. The method includes determining an ensemble correlation function from the correlation functions, and determining the distance from the ensemble correlation function.Furthermore, a microscope for carrying out the method is provided.
Public/Granted literature
Information query