发明名称 |
Apparatus and method for optical determination of intermediate distances |
摘要 |
An apparatus and a method are disclosed for optically determining a distance r to a feature from an origin or a center. The apparatus uses a beam generation unit for launching a reference beam on a reference path and a first beam on a first path. The center from which distance r is determined is selected such that it is along a line of the reference path and not along a line of the first path. Alternatively, the center can be chosen not to lie along a line of the reference path. A rotation mechanism rotates the reference path and the first path about the center such that the reference beam moves over the feature at a reference time t<SUB>r </SUB>and the first beam moves over the feature at a first time t<SUB>1</SUB>. A determination unit determines distance r between the center and the feature from an angular velocity omega of the reference beam over the feature and from times t<SUB>r</SUB>, t<SUB>1</SUB>.
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申请公布号 |
US2005225742(A1) |
申请公布日期 |
2005.10.13 |
申请号 |
US20040824330 |
申请日期 |
2004.04.13 |
申请人 |
BUERMANN DALE H;MANDELLA MICHAEL J |
发明人 |
BUERMANN DALE H.;MANDELLA MICHAEL J. |
分类号 |
G01B11/02;G01C3/08;G01S17/46;G01S17/87;(IPC1-7):G01C3/08 |
主分类号 |
G01B11/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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