News and Events

Mirror Quality?

Posted by Ana Walters on

In a high energy laser situation like Co2 laser, there are 2 things that make a better mirror (energy loss is not a big deal, absorption is): The loss of power is directly converted to heat. Excess heat in the mirror and in the mirror holder will have negative effects on flatness of the mirror, and possibly beam alignment. The other difference in mirror quality is flatness. The images below are of a Mo mirror that came with a K50 and one of American Photonics.  The lines should be parallel and evenly spaced if the mirror was flat. The one from...

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Getting the best pptical performance out of your laser beam

Posted by Ana Walters on

Beam alignment is #1;  optic quality is #2; and focal point is #3 Beam Alignment: You will never be 100% satisfied with your machine until you learn to master this process. Watch as many videos as necessary until you completely understand this concept. Then go to your machine and mess it up just to practice aligning it. Beam alignment is not something to be feared it is something to mastered if you want to produce the best possible work. Optic Quality: Don’t be afraid to spend $100 on optics. Super flat mirrors and a high-quality lens will pay off in...

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Is there an advantage to a larger diameter lens?

Posted by Ana Walters on

The short answer is "NO". There is no advantage to a bigger diameter lens.The long answer is "it depends".Is the beam diameter more than 70% of the diameter of the lens? (a 12mm lens is ok up to an 8mm beam)The ZnSe crystal is coated at up to 300deg C. The lens and coating can handle more temperature than your O-ring or my glue.A lens fails when:1- the coating gets damaged;2- The lens is dirty;3- The crystal is under stress.I have had my Co2 optics professionally tested and they passed the 300 watts per mm diameter energy density test.Obviously if...

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Engraving 1.5” vs 2.0” vs 4.0”

Posted by Ana Walters on

No question, everything being perfect a 1.5” will give the best results! Everything being perfect, a 1.5” lens can easily achieve 500dpi: Perfectly flat part Perfectly level bed Perfect beam alignment Perfect distance set to the exact smallest focal point. If 200dpi is the end goal because you know the piece can’t sit flat or isn’t flat, a 1.5” fl may not be the best choice. It is important to know a 2” lens can easily achieve 400dpi, and a 4” can easily achieve 300dpi - Again, everything being perfect. Because of the slower beam convergence, the 100dpi spot size...

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Lens vs Lens Tube - What's the difference?

Posted by Ana Walters on

American Photonics don't feel you should ever touch your lens. That's why we've developed an easier, cost-efficient way to replace and clean it without dropping it, or getting the oils from your fingertips on the lens.It's a simple process: Just slip the stem tube in the hole under the 3rd mirror, set your focus and hit the run button! However, notice that your regular lens diameter is NOT the same as the tube diameter. To find out the right size, you just have to measure the outside diameter of the tube that fits in the hole under your third mirror.  The lens is suspended in...

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