Polarization element and method for manufacturing the same
US6765721B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2002 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Mar 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3033
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for manufacturing a polarization element which has a high reliability and is easy to manufacture. The manufacturing method includes the steps of forming a fine metal particle dispersed product including a plurality of dispersed fine metal particles on a surface of the transparent substrate using a sol-gel method, drawing the fine metal particle dispersed product together with the transparent substrate while heating both, and cutting the drawn fine metal particle dispersed product and transparent substrate. The forming step includes the steps of coating a sol coating liquid on the surface of the transparent substrate, heat-treating the coated sol coating liquid, and sintering the heat-treated sol coating liquid. The sol coating liquid includes a disperse liquid containing an organic silicon compound as a main component and a metal salt dispersed in the disperse liquid for forming the fine metal particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.