Lenses

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In order to have a useful laser system, the light from the laser diode needs “modification.” This is where laser lenses come in; we need lenses to direct and focus the light for the different applications we may have. You can get a wide variety of results using the same laser but different lenses, so that you can go from cutting ¼” softwoods or opaque acrylic to engraving a very detailed crest on genuine leather.   

Currently, there are 4 lens types that we offer:

Lens Specification Chart

Lens Type:3 Element G2G7G8
Efficiency:70%95%88%90%
Tested Focal Length*:63-67 mm28-35 mm83-85 mm70-75 mm

*Focal Length is Measured from bottom of laser assembly aluminum heatsink to the material laser is used on https://resources.sienci.com/view/lb-finding-lens-focus-height/

3-Element lens

  • Best for engraving 
  • Smallest beam size → perfect for detailed engraving
  • Lowest power output → may not cut as well as other lenses
  • Medium focal length 

G2 lens

  • Best for cutting 
  • Largest beam size → perfect for bulk material cutting
  • Highest power output → can cut through material with less passes
  • Smallest focal length → can cut thicker material due to low Z-axis travel constraint

G7 lens (Balanced Multi-Purpose Perfection)

  • Good for basic cutting and engraving
  • Medium beam size
  • Good power output
  • Largest focal length → can cut/engrave thicker material than G8 lens

G8 lens (Balanced Multi-Purpose Perfection)

  • Good for basic cutting and engraving
  • Medium beam size
  • Good power output
  • Medium focal length