Method of manufacturing flat plate microlens and flat plate microlens
US6437918B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2000 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Oct 17, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/0068
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A large number of microscopic recess portions are formed on a surface of a glass substrate in a single dimension or two dimensions by conducting a wet etching through a mask. The large number of microscopic recess portions are aligned densely by again conducting the wet etching but not through the mask. A separating agent is applied upon the surface of the glass substrate and a light-curable or heat-curable resin material of high refractive index is applied thereon. The high refractive index resin material is cured, after piling a first glass substrate upon the high refractive index resin material so as to extend the high refractive index resin material thereon. The high refractive index resin material which is cured and the first glass substrate are separated from the glass substrate, and a low refractive index resin material is applied on the high refractive index resin material which is cured on the first glass substrate. The low refractive index resin material is cured, after piling a second glass substrate on the low refractive index resin material so as to extend the low refractive index resin material thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.