Method for preparing sapphire lens and sapphire lens
US10532525B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2015 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | May 1, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for preparing a sapphire lens includes the following steps: sequentially forming an ink layer and a coating film layer on one surface of a large polymeric membrane; laser-cutting the obtained large polymeric membrane to form two or more small polymeric membranes that are as thick as the large polymeric membrane; laminating the surface of the small polymeric membrane that does not contain the ink layer and the coating film layer to one surface of a sapphire sheet, such that an adhesive layer is formed between the small polymeric membranes and the sapphire sheet, wherein the sapphire sheet has a thickness of 0.3 to 1.5 mm, and the polymeric membrane has a thickness of 0.02 to 0.2 mm; and pressing the obtained sheet material to remove bubbles, thereby obtaining a sapphire lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.