Magnetizable particles forming light controlling structures and methods of making such structures
US11998947B2 · kind B2 · utility
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10References
17Claims
0Family size
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Key dates
| Filing date | Jul 18, 2019 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Jun 11, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/52
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of making an optical film for control of light includes positioning a first mixture on a substrate, wherein the first mixture includes a first plurality of magnetizable particles dispersed in a first resin, assembling the first plurality of magnetizable particles into a desired structure for the control of the light by rotating modulation of at least a first magnetic field relative to the first plurality of magnetizable particles, and vitrifying the first resin while the first plurality of magnetizable particles are in the desired structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.