Light engines for photo-curing of liquid polymers to form three-dimensional objects
US10328634B2 · kind B2 · utility
13Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2018 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Jan 8, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Three-dimensional objects are formed by photo-curing a liquid polymer by exposure to a radiation, which radiation (e.g., at 410 nm) is provided by a collimated light source composed of an array of light emitting diode (LED) sources, an array of baffles, and an array of lenses. The baffles limit beam widths of each individual LED source in the array of LED sources, and the array of lenses is located one focal length from said array of LED sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.