Many manufacturers engaged in laser marking processing will ask when purchasing equipment: does this machine have red light adjustment function? What is the role of this "red light regulation"?
1. Adjusting the optical path of resonator
The working principle of the resonator is based on the interference of multiple beams in the cavity, and one of the basic conditions for the interference is the coincidence of the beams in space, which requires us to control the direction of the beams very accurately so as to couple them into the resonator, that is, the optical cavity coupling. For example, semiconductor laser marking machine.
Only when the marking position is fixed, can the processing and production be carried out efficiently. According to the different marking software, it can be divided into marking focus indication, 9-point indication of marking pattern, length and width indication of marking pattern, and overall simulation indication of marking pattern.
Red light can also be used as the focus of laser marking machine, which is the indication of marking distance (sometimes red light will not be displayed, sometimes red light will appear, but only red light will be on and off, but no light will appear). The distance between the two red light points coincides with the distance of the marking airport mirror. In this way, it is not necessary to use a steel ruler to measure the marking distance every time the product is replaced, which reduces the operation steps and improves the marking speed.
There is one thing to pay special attention to: to turn on the red light adjustment of laser marking machine requires the operator to have a certain understanding of the equipment. For example, generally, the red light adjustment is set on the marking software. Press F1 to turn it on. If you only find that the galvanometer is moving and there is no red light coming out, first check whether the mechanical switch to control the red light is not on. Check whether the power supply of the red light is on. Use a multimeter to measure whether there is 5V voltage between the two red and black lights of the red light indicator, If the voltage is 5V and there is no laser output, then the red light indicator should be replaced.
There are some laser marking machine manufacturers, in order to save costs, there is no such function, we must pay attention to this when we choose laser marking machine. A complete laser marking machine, will certainly contain red light indicator system, do you have all your equipment?