发明名称 |
Methods and apparatus of aligning surfaces |
摘要 |
Ultra-precision freeform surfaces are important to the development of complex and micro-optical-electro-mechanical devices used in many photonics and telecommunication products such as F-theta lenses for laser printers. These surfaces are complex and large scale surface topologies with shapes that generally possesses no rotational symmetry. Due to the geometrical complexities of these ultra-precision freeform surfaces, it is difficult to characterize the form accuracy and surface quality of freeform optical surfaces. The method of this invention is based on feature-point pre-fixture, and iterative precision alignment algorithm, which can provide sufficient capability of form characterization for ultra-precision freeform surfaces with form accuracy down to below sub-micrometer range
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申请公布号 |
US7619749(B2) |
申请公布日期 |
2009.11.17 |
申请号 |
US20060511361 |
申请日期 |
2006.08.29 |
申请人 |
THE HONG KONG POLYTECHNIC UNIVERSITY |
发明人 |
CHEUNG CHI-FAI;LI HUIFEN;LEE WING-BUN;TO SUET;KONG LINGBAO |
分类号 |
G01B11/24;G06F17/10;G06F17/50;G06T15/40;G09G5/00 |
主分类号 |
G01B11/24 |
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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