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 | G2 | G7 | G8 |
| Efficiency: | 70% | 95% | 88% | 90% |
| Tested Focal Length*: | 63-67 mm | 32-33 mm | 83-85 mm | 70-75 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
