| 20090290607 | SIGNAL PROCESSING DEVICE FOR CONTROLLING LASER OUTPUT AND DEVICE FOR OBSERVING LASER ACTION PROCESS - The present invention relates to a signal processing device for controlling laser output and a device for observing laser action process. The device for observation includes a video camera for image acquisition and a monitor connected with the video camera, and it further includes a signal processing device for controlling laser output. A pulse signal of an electronic shutter of the video camera, after being processed by the signal processing device, is outputted to a controlling input port of a laser device. The signal processing device includes a control signal generating unit for generating a control signal according to the pulse signal of the electronic shutter by the image acquisition; a compression signal generating unit for compressing the pulse width of the generated envelope signal which is a signal for controlling the laser output according to the influence time on the image acquisition from the optical noise due to interaction between the laser and the material. The devices provided by the present invention can eliminate the high-brightness optical noise generated from the action between the laser and the material, and consequently the laser action process can be observed clearly. | 11-26-2009 |
