Method for fabricating mold core
US7608387B1 · kind B1 · utility
1Cited by
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16Claims
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Key dates
| Filing date | Jan 15, 2009 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Jan 15, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An exemplary method for fabricating a mold core includes the following steps. First, a substrate is provided. Second, a photo resist layer is formed on the substrate, the photo resist layer has a top surface. Third, the photo resist layer is etched using a direct writing process to form the top surface thereof into a substantially aspherical stepped surface. Lastly, the photo resist layer is softened using a reflow process to transform the substantially aspherical stepped surface into a substantially aspherical smooth molding surface. Thereby, a mold core having the substantially aspherical smooth molding surface is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.