Laser marking system
US5932119A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1996 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Jul 30, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/262
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A laser energy microinscribing system, including a semiconductor excited Q-switched solid state laser energy source; a cut gemstone mounting system, allowing optical access to a mounted workpiece; an optical system for focusing laser energy from the laser energy source onto a cut gemstone; a displaceable stage for moving said gemstone mounting system with respect to said optical system so that the focused laser energy is presented to desired positions on the gemstone, having a control input; an imaging system for viewing the gemstone from a plurality of vantage points; and a rigid frame supporting the laser, the optical system and the stage in fixed relation, to resist differential movements of the laser, the optical system and the stage and increase immunity to vibrational misalignments. The laser energy source is preferably a semiconductor diode excited Q-switched Nd:YLF laser with a harmonic converter having an output of about 530 nm. The system may further include an input for receiving marking instructions; a processor for controlling the displaceable stage based on the marking instructions and the imaging system, to selectively generate a marking based on the instructions and…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.