We developed this lens in partnership with Beijing university to give the highest efficiency output possible with the best in spot quality. This will give you very high precision in your photo engravings and also the higher power to go faster and cut more! You can expect over 30% more power with this lens compared to a standard three element lens. This is the only lens we offer in our products because it is just so much better than the standard.
You can compare this lens to the “G2″ type lenses that are sold by other vendors.
Recommended Focus Height: 1″ to 1.5″ (25mm to 40mm)
Maximum Focus for best results: 3” (76mm).
Lens Holder Length: 12mm
Lens Holder Diameter: 9mm