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dc.contributorDepartment of Industrial and Systems Engineering-
dc.creatorCheung, CFB-
dc.creatorLi, H-
dc.creatorLee, WB-
dc.creatorTo, S-
dc.creatorKong, L-
dc.rightsAssignee: The Hong Kong Polytechnic University.en_US
dc.titleMethods and apparatus of aligning surfacesen_US
dc.description.otherinformationInventor name used in this publication: Chi-Fai Cheungen_US
dc.description.otherinformationInventor name used in this publication: Wing-Bun Leeen_US
dc.description.otherinformationInventor name used in this publication: Suet Toen_US
dc.description.otherinformationApplication No. 11/511,361en_US
dcterms.abstractUltra-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.-
dcterms.bibliographicCitationUS Patent 7,619,749 B2. Washington, DC: US Patent and Trademark Office, 2009.-
dc.description.oaVersion of Recorden_US
Appears in Collections:Patent
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