Microstructured element and method for producing the same
US6464344B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 2000 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Dec 27, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/1404
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A microstructured element comprising a transparent substrate-having a major surface; an opaque layer formed in a certain pattern on the major surface of the transparent substrate; and a microstructured layer formed on or above the major surface of the transparent substrate in a pattern corresponding to the certain pattern of the opaque layer. The microstructured layer includes a slanted lateral face extending along an edge of the opaque layer in a direction intersecting the major surface at an oblique angle. The microstructured element is produced through the steps of providing a photosensitive layer entirely on the major surface of the transparent substrate and the opaque layer; exposing the photosensitive layer to light transmitted through the transparent substrate from a back surface opposite to the major surface at an oblique angle with the major surface; and developing the photosensitive layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.