In laser märgistus masinad või galvanomeeter keevitusseadmed, mõnikord the vibreeriv objektiiv on sageli kahjustatud, ja the vibreeriv peegel on asendatud, aga see on ikka katki, ja väli peegel on mitte kahjustatud.
At this time, most of the clems will say that it must be that the cover of your vibrarating mirror lens is not good, so it is easy to break. And at this time, it is really possible that the galvanometer lens will not be broken if you change the galvanometer from another company. See tundub et the galvanometer manufacturer must bear the süü, and the galvanometer manufacturer can only admit see.
In fact, this problem is caused by the fact that the rear reflection point of the field mirror happens to be on the vibrating mirror. What is the rear reflection point? Everyone knows from looking at the field mirror that the last lens of the field mirror is a concave mirror on the side facing the galvanometer lens. We default that the laser is 100 percent through the field mirror, so the vibrating mirror lens and the field mirror will not affect each other (of course, the positions of the vibrating mirror lenses M1 and M2 must be correct, and the field mirror cannot be scratched). But the 100 percent laser transmittance we said is theoretical, and it is usually between 98 percent -99.5 percent , that is, 0.5 percent -2 percent of the laser will be reflected back. According to optical knowledge, we know that a beam When parallel light hits a concave surface, the reflection will focus on the focal point of this concave surface (just like our satellite antenna). The back reflection point I drew in the above picture is the focal point of this concave surface. When the laser is reflected from the concave surface back to the back reflection point, if the vibrating mirror is just at this position, it means that the laser is focused on the vibrating mirror, so the film layer of the vibrating mirror is easy to break.
Nüüd kõik teavad miks galvanomeeter lääts on sageli katki. Millal me uurime probleem, peame mitte ainult tean põhjus põhjus probleem aga ka teadmine kuidas lahendada see.
lahendus to this problem is very simple, that is to increase the field mirror adapter ring between the galvanometer and the field mirror by 3mm or add a seher to prevent all screwing in, so that the distance between the field mirror and the M2 lens is If it is far away, it will not focus on the M2 lens when it is reflected back at this time, and it kas mitte olla kahjustatud.
Las mina ütle a paar rohkem sõnad allpool. In fakt, millal me saame igaüks komplekt väli peeglid, me peaks olema a PDF dokument telling us mõned parameetrid umbes väli peeglid, mis peaks sisaldama parameetrid of the tagumine peegeldus punkt. See Pärast seadistus parameetrid of the tagumine peegeldus punkt, kujundused kõrgus of the conversion circle of the field lens. aga meie reaalsus, sest meie optiline kiud märgistus masinad on kõik 20}W or 30W, the light reflected from the last lens of the field mirror is about 0.2-0%3W, and the reflect light is not tingimata the same It will really focus on the vibrating mirror, so it will not cause any harm to the vibrating mirror, and in most cases, seal on ei sagedane kahjustus to the vibreeriv peegel. Siiski, koos the continuous use of 2000-6000-watt continuous lasers for welding, {200-300-watt impulss- laserid for laser puhastus, and the widespread use of picosecond and femtosecond lasers, this phenomenon of vibrating mirror damage will become more and more frequent. , so we have to pay attention to this problem. When there is frequent damage to the vibrating lens, we must think about adding a gasket or re-making a conversion ring.
