Hello,
We have the LVD laser, power source 6kW, mostly cutting stainless steel with nitrogen. We use 10,00" focal lenses for thick sheets(15,16mm). But i wonder is there some gain in speed and stability if we will use bifocal lenses for thick materials. Now we have some issues in stability and roughness, sharp edges.

Now we use:
29100061
10,00" ZnSe Meniscus lens
High pressure lens (28 bar) 50,8 mm
Effective focal lenght 254,00 mm
Edge thickness: 9,7 mm
AR/AR for 10,6um (absorption <0,15%)

Does anyone have more experience with bifocal lenses?
Practical experience?
I wonder where in the EU is avalible for LVD / (Precitec-head) lasers?
Price comparison?

Looking forward for your attention and answers.

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