The Result of Dirty Lenses and Mirrors

How much of an effect can mirrors and lenses have on cutting ability?

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Because the laser is essentially heat energy, if the lens or mirror is not transmitting the laser through it or reflecting it, it can build up heat. That heat can actually generate a crack. If you don’t clean your mirror or lens, you can actually crack them and cause permanent damage.

If you use a laser power meter, you could typically see about 5-8% reduction in output per mirror. If the mirror is dirty, and you have three mirrors, you could be as much as 15% off on your power output, which is significant.

Mike Fruciano

Mike Fruciano

Mike Fruciano is the Distribution Sales Manager - The Americas 3D Printing & Laser Systems at Coherent Inc. Mike brings 25 years of laser systems, laser processing, and materials experience, and is a frequent writer and speaker on these topics. Contact Mike at 602-616-4971 or at [email protected]

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