Optical element and method for making the same
US7479298B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2006 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Feb 6, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24612
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for forming an optical element includes: preparing an optical substrate; coating a curable resin on the optical substrate so as to form a curable resin layer on the optical substrate; embossing the curable resin layer so as to form a plurality of adjoining pointed micro-protrusions, each of which has a tip end; heating the pointed micro-protrusions of the curable resin layer in such a manner that the tip end of each of the pointed micro-protrusions is softened and is spread over the remainder of the respective one of the pointed micro-protrusions so as to form the adjoining pointed micro-protrusions into adjoining rounded micro-protrusions which cooperatively form a continuous curved surface; and curing the curable resin layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.