Lens info?

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Re: Lens info?

Postby ecouwoo » Fri Apr 15, 2016 12:39 pm

Hi Guys,
I'm reading through the threads. What beats my imagination is how you are able to measure the the focal point. When you say you were able to measure focal point to 0.004 to 0.005 are you referring to diameter of the focus point? Which units is that in? Do you use digital calliper in determining it?


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Re: Lens info?

Postby Picengravertoo » Fri Apr 15, 2016 1:18 pm

We determine the focal point size by the width of the line it burns. The .005" is in inches which would be .127mm. It's not easy to measure, other then setting the Pixel Resolution (stepover) in our software when generating the gcode. Then run an image engraving test to see if there are spaces between the burn lines with an eye loop or magnifying glass. If the burn lines are overlapping, then you use a larger Pixel Resolution value. Engraving at a 45 degree angle will bring the burn lines slightly closer together.

With a .005" burn line width, we use a .006" Pixel Resolution and engrave at a 45 degree angle. This will cut down on the gcode's travel perimeter distance to cut down on the overall run time.


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