Laser apparatus and method for processing objects with a laser which is controllable in terms of the pulse energy
US8824515B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 2011 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Nov 18, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D2035/44
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A laser processing apparatus, a filter device and a method are used for controlling a pulse laser, which is controllable in terms of its pulse energy and of a temporal triggering of laser pulses, during material processing of an object, in particular during the marking of a plastics-based document. The method includes comparing a pulse energy signal which assumes voltage values, in temporal correlation with a clock signal, which represent a pulse energy for the laser pulses for processing, with a threshold value condition and generating a logic result signal. The clock signal is passed to a gate and controlling the gate using the logic result signal and generating a retrieval signal thereby. An energy control signal is provided which has a voltage according to a specification of a control voltage. The retrieval signal and the energy control signal are used to control the pulse laser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.