Stamper for use in forming planar micro-lens array and method for forming thereof
US6129866A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1998 |
| Grant date | Oct 10, 2000 |
| Priority date | — |
| Expiry date | Oct 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8063
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
For providing a stamper for forming a planar micro-lens array, a stamper is prepared by forming plural concave portions 2 for forming lens portion upon a stamping surface thereof, and a trap portion 3 is provided surrounding said plural concave portions and continuing until an outer edge thereof. Then, onto the stamping surface, on which a release agent 4 is applied, there is applied a high refractive index resin 5, and a glass substrate 6 is pressed onto the high refractive index resin 5 to exude it. With this operation, the high refractive index resin 5 is filled into each of the plural concave portions 2, and any excess is received or accommodated in the trap portion 3, thereby preventing excess resin from being forced outside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.