Hi, people. I have a not so scientific, but hopefully a simple question. I want to get a replacement lens for my machine. All I know is that I currently have an 18mm (diameter) 38.1mm plano-convex lens. Without talking about any specific needs, like material, etc. what should I get? Specifically what is the difference between 38.1mm and a 50.8mm focal lenses? And also between plano-convex and meniscus lenses? I read that 38.1mm is better in terms of energy loss (i.e. less loss) and meniscus one had a more precise focal point. So does it mean 38.1mm meniscus is the best combination?
Thank you for your time.
Not a simple answer…
It really depends upon what type of work you intend to do with the laser. Here are some links to read that might help you decide what you need.
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Thank you so much! Very comprehensive info. I think I’ll go for a 50.8mm meniscus at first. I know much more now. Really appreciate your answer.