Study of laser transmission welding of plastics based on holographic technology

The principle of laser transmission welding of plastics and holographic technology,and laser simultaneous welding technology based on laser holographic technology were introduced.In order to achieve simultaneous welding of plastics with small weld joint,the facula figure of laser beam was modulated the same as the figure of desired weld joint using interferential method to record the figure of desired weld joint and then using diffractive method to make the figure of desired weld joint reappearance.Using the modulated laser beam to weld plastics simultaneously,the figure of ideal weld joint was identical with the desired one.The result shows that this technology is applied when the figure of weld joint is small and complex.