Polymeric optical substrate method of treatment
US6156394A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1998 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Apr 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K5/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pretreatment method for use in manufacturing an improved optical component comprises (i) providing a polymeric optical substrate; and (ii) exposing the polymeric optical substrate to electromagnetic energy having a wavelength of about 30 nm to about 350 nm. The exposure of the polymeric optical substrate to the electromagnetic energy substantially improves adhesion between the substrate and an optical coating deposited onto the substrate following pretreatment. The invention addresses the significant need for coated plastic optics by providing a method to achieve reliable adhesion of optical coatings placed on polymeric optical substrates. Specifically, this invention enables improved adhesion for even highly curved or shaped parts which have been historically more difficult to coat. The pretreatment method is particularly useful for molded substrates such as molded polymethylmethacrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.