Monday, August 6, 2012

The handy use of green laser pointer is the key characteristics of green laser pointer

The handy use of green laser pointer is the key characteristics of green laser pointer
Control features: feedback control mode, the power waveform selection. Proofing, the optical properties of the welding machine can be determined in the initial pilot production can visually determine the effect of welding, so I will not, but focuses on the consistency of laser welding laser control features. Laser welding machine on the market from the control characteristics are divided into two categories: the current negative feedback and negative feedback of the laser power. The current negative feedback control of laser-pumped xenon lamp current so that each time a controlled manner to maintain a constant current of the xenon lamp. More bottle shape green laser pointer will be manufactured.
However, the laser output power and pumped xenon lamp current is not linearly proportional relationship with the extension of the pumped xenon lamp usage time, the electro-optical conversion efficiency is significantly reduced, it will cause the output laser energy is reduced, thus affecting the effect of welding consistency. The negative feedback of the laser power in the output of the laser cavity and a photoelectric detector, detected by the laser power and laser power required, and thus control of the xenon lamp pumping current size of a control method. The negative feedback of the laser power is divided into real-time negative feedback and non-real-time two negative feedback. Real-time negative feedback will be detected by the laser power in a pulse of laser power and the laser power required for comparison. The green laser pointer store will perform the promotion of green laser pointer .
Then control the xenon lamp pumping current size of a control method. The non-real-time negative feedback will be compared to the previous pulse detection laser power waveform and set the waveform, and then determine the next pulse laser-pumped xenon lamp current size of the control.

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