Second surface laser ablation
US11275285B2 · kind B2 · utility
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6References
10Claims
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Key dates
| Filing date | Dec 17, 2018 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | May 31, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13439
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A laser ablated product exhibits a diffraction severity of less than about 5. The product may include a substrate that is at least partially transparent to visible light, and a periodic structure formed on at least one surface of the substrate by laser ablation. The periodic structure has a period in at least one direction of at least about 4,500 nm to at most about 850,000 nm, and the periodic structure has a peak-to-valley dimension of less than about 25 nm. The product may be employed in an electrochromic device, such as a vehicle rearview mirror assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.