Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/1715
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Department of Industrial and Systems Engineering | - |
| dc.creator | Cheung, CFB | - |
| dc.creator | Li, H | - |
| dc.creator | Lee, WB | - |
| dc.creator | To, S | - |
| dc.creator | Kong, L | - |
| dc.date.accessioned | 2010-01-31T16:33:05Z | - |
| dc.date.available | 2010-01-31T16:33:05Z | - |
| dc.identifier.uri | http://hdl.handle.net/10397/1715 | - |
| dc.language.iso | en | en_US |
| dc.rights | Assignee: The Hong Kong Polytechnic University. | en_US |
| dc.title | Methods and apparatus of aligning surfaces | en_US |
| dc.type | Patent | en_US |
| dc.description.otherinformation | Inventor name used in this publication: Chi-Fai Cheung | en_US |
| dc.description.otherinformation | Inventor name used in this publication: Wing-Bun Lee | en_US |
| dc.description.otherinformation | Inventor name used in this publication: Suet To | en_US |
| dc.description.otherinformation | Application No. 11/511,361 | en_US |
| dcterms.abstract | 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. | - |
| dcterms.bibliographicCitation | US Patent 7,619,749 B2. Washington, DC: US Patent and Trademark Office, 2009. | - |
| dcterms.issued | 2009-11-17 | - |
| dc.description.country | US | - |
| dc.description.oa | Version of Record | en_US |
| Appears in Collections: | Patent | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| us7619749b2.pdf | 788.54 kB | Adobe PDF | View/Open |
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