Process for producing plastic lens comprising a primer layer, a hard coat layer and an antireflection coating
US5693366A · kind A · utility
65Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1995 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Aug 16, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/111
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for producing a plastic lens is disclosed, which comprises the steps of: providing a primer layer comprising a polyurethane on the surface of a plastic lens substrate; subsequently providing a hard coat layer comprising a silicone resin on the surface of the primer layer; and then providing a single-layer or multi-layer anti-reflection coating on the surface of the hard coat layer by depositing an inorganic material, wherein the polyurethane used for providing the primer layer is a thermosetting polyurethane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.