Multibeam laser device for fabricating a microretarder by heating process
US8502110B2 · kind B2 · utility
2Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2008 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Dec 6, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/0676
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A multi-beam laser device is used to make a microretarder plate, which comprises a plurality of first retardation state areas and second retardation state areas alternating with each other. The device comprises an infrared laser, a beam splitter, and a driving means. The beam splitter is used to split the laser beam into a plurality of equal intensity parallel beams and bring the parallel beams into focus. The driving mechanism is used to drive the beam splitter in one direction, and the beam splitter will scan a plurality of parallel scan lines by the direction on a surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.