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πŸ” cncol etech cvd ii-vi znse 20mm diameter 2" or 50.8mm focal length co2 laser engraving cutting engraver/cutter lens for 40w-200w logo

πŸ” CNCOL etech CVD II-VI ZnSe 20mm Diameter 2" or 50.8mm Focal Length CO2 Laser Engraving Cutting Engraver/Cutter Lens for 40W-200W Review

3

Β·

Very good

Revainrating 4 out of 5Β Β 
RatingΒ 
4.0
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Description of πŸ” CNCOL etech CVD II-VI ZnSe 20mm Diameter 2" or 50.8mm Focal Length CO2 Laser Engraving Cutting Engraver/Cutter Lens for 40W-200W

Material: Hight class CVD Znse material (US II-VI). Focal Length:50.8mm/2" ; Dia:12mm/15mm/18mm/19mm/20mm/25mm/30mm optional; Thickness:2.2-2.3mm;. Double-sided solid Coating;Resistance to wipe;High transmittance; Long service life. It's good for 40W/50W/80W/100W/130W/150W CO2 laser 10600nm 10.6um. It can be used for CO2 laser engraving and cutting well.

Reviews

Global ratings 3
  • 5
    1
  • 4
    1
  • 3
    1
  • 2
    0
  • 1
    0

Type of review

Revainrating 5 out of 5

Great inexpensive lens of good quality.

Great price for a quality lens. Focus was clean when installed. Coverage is greater than other inexpensive lenses I've tried. Let's see how it will be in a few months.

Pros
  • Material: High quality CVD material Znse (US II-VI)
Cons
  • Can't remember

Revainrating 3 out of 5

Works well, too thick for universal

The product description says 2.2-2.3mm thick, but it is much thicker, like 3.2mm, which is a problem to fit in a general purpose laser cutter. I can somehow get it to work by adjusting a few things on the whole lens holder assembly, but that's not the best solution for my situation since I'm running a room with 6 lasers used by hundreds of people, and maybe those Lens assemblies are subject to change. As for the function of the lens, it seems excellent so I would give that aspect 5 stars…

Pros
  • Can be used for CO2 laser engraving and cutting.
Cons
  • Crumpled

Revainrating 4 out of 5

Work with a universal laser cutter, just about fit. cuts well.

I bought a CVD IIVI ZnSe lens with a focal length of 2.0", diameter 19mm. This lens is thicker on the edge than the standard lenses from a general purpose laser, but it hardly fits and so far cuts quite well. I bought another listed as plano-convex, like an OEM lens, but it's out of spec and too thick to use.A plano-convex lens from a general purpose laser is about 2.3mm thick and 1.75 at the edge mm thick One caveat that may apply to all interchangeable lenses is that you'll need to…

Pros
  • Suitable for 40W/50W/80W/100W/130W/150W CO2 laser 10600 nm 10.6 Β΅m.
Cons
  • Damaged