The Projectile Impacting Velocity Measurement Technique with Splitting Laser Beams

We designed and developed an element, which can split a single laser beam produced by a He-Ne laser device of 4 mV power into ten paralleled laser beams with an equal space-distance of 5 mm between each beam pair. We have developed a photo-electric transformer, which is of high sensitivity, waveform synthesized and has a single output channel. When combined with the digital oscilloscope and personal computer, we have the system can be used to measure the impacting velocity of the projectile launched by a gas gun.