Invention Grant
- Patent Title: Method and apparatus for determining the position of a structure on a carrier relative to a reference point of the carrier
- Patent Title (中): 用于确定载体上的结构相对于载体的参考点的位置的方法和装置
-
Application No.: US12518288Application Date: 2007-11-20
-
Publication No.: US08369605B2Publication Date: 2013-02-05
- Inventor: Michael Arnz , Gerd Klose , Michael Totzeck
- Applicant: Michael Arnz , Gerd Klose , Michael Totzeck
- Applicant Address: DE Jena
- Assignee: Carl Zeiss SMS GmbH
- Current Assignee: Carl Zeiss SMS GmbH
- Current Assignee Address: DE Jena
- Agency: Fish & Richardson P.C.
- Priority: DE102006059431 20061215
- International Application: PCT/EP2007/010047 WO 20071120
- International Announcement: WO2008/071296 WO 20080619
- Main IPC: G06K9/00
- IPC: G06K9/00

Abstract:
A method is provided for determining the position of a structure on a carrier, relative to a reference point of the carrier, said method comprising the steps of: a) providing an image including a reference structure; b) recording an image of the structure on the carrier by means of a recording device, with a known recording position relative to the reference points; c) superimposing the two images to form one superimposed image; d) determining the image distance of the two structures in the superimposed image; e) shifting the two structures in the superimposed image relative to one another, depending on the determined image distance; f) checking whether the determined image distance is below a predetermined maximum value; wherein, if the image distance is below the maximum value, the method is continued in step g), and, if the image distance is not below the maximum value, steps d)-f) are repeated, taking into account the determined image distance/distances: g) determining the position of the structure relative to the reference point, on the basis of the recording position in step b) and of the image distance/image distances determined in step(s) d).
Public/Granted literature
Information query