Systems for and methods of forming micro-holes in glass-based objects using an annular vortex laser beam
US12296408B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2020 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Sep 16, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/54
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The systems and methods disclosed herein utilize a beam-forming system configured to convert a Gaussian laser beam into an annular vortex laser beam having a relatively large depth of focus, which enables the processing of thick or stacked glass-based objects annular laser beam is defined in part by a topological charge m that defines an amount of rotation of the annular vortex beam around its central axis as it propagates annular vortex beam is used to form micro-holes in a glass-based object using either a one-step or a two-step method micro-holes formed by either process can be in the form of recesses or through-holes, depending on the application size of the micro-holes can be controlled by controlling the size of the annular vortex beam over the depth of focus range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.