Manufacture of optical diffusers composed of reflowable materials
US12109771B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Feb 20, 2020 |
| Grant date | Oct 8, 2024 |
| Priority date | — |
| Expiry date | Aug 12, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of making optical diffuser elements (20) includes providing a substrate (100) composed of a polymer material and having openings (102) therein. An optical diffuser material (110) is dispensed into the openings (102), and the optical diffuser material (110) is hardened to form a sheet (200) composed of regions of the optical diffuser material (110) surrounded laterally by the polymer material. The method includes separating the sheet (200) into multiple optical diffuser elements (30) that retain their mechanical stability and optical properties when subjected to a reflow process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.