Water cooled beam expander choice considerations water cooled beam expander times good? High power cutting machines for power, heating very ill, beam expander small eyepiece are therefore often broken. Many customers think that larger multiple beam expander, the light, the better, cut out of line as possible. 

In fact, we just noted that one aspect of this issue. In fact, we want to see many aspects of the problem, so that we can properly elected for beam expander. 

Optional beam expander, we should consider several factors: Is a laser spot size? 

Second, beam expander optical maximum diameter of exit number? 

Three is a small eyepiece beam expander of materials