Laser marking device and method for marking arcuate surfaces
US6469729B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2000 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Jun 30, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/0823
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A laser marker employs a laser beam, an optical scanner that scans the laser beam along an optical path, and an optical element having a variable image distance. The optical element is located after the scanner and is tilted with respect to the optical axis of the scanner by an amount sufficient to create a desired variable image distance as the laser is scanned across the optical element. The scanning of the scanner is synchronized to the motion of the substrate by determining a first component of motion of a substrate to be marked by using an encoder and storing data representing a second component of motion of the substrate in a memory. In a preferred embodiment, the optical element is a spherical lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.