• High Quality ZnSe Crystal: USA CVD ZnSe Material. Excellent Optical Properties. Up to 500W CO2 Laser Resistance
  • Superb Coating Process: Double-sided Solid Coating. Wiping Resistance. Long Working Life
  • High Precision Process: Excellent Substrate. Precision Slicing, Polishing, Grinding Processes. High Temperature, Laser Resistance
  • High Transmittance: High Quality Material and Exquisite Coating to reduce the loss of laser.Laser Transmittance Up To 99.5%. Higher Work Efficiency
  • Usage: replacemeny DIY part for CO2 laser engraving, cutting & marking machine & CO2 laser head

I damaged my lens in my laser head. This lens was better than my old one at a lower price.

Bought this to replace the stock lens in my K40 laser in addition to the Si mirrors and have been impressed by the results. I have never heard of the company Cloudray but I decided to take a risk since this lens was a bit cheaper than the alternatives (who similarly had names that I have not seen). If this lens is in fact a CVD ZnSe that is advertised, then the value (i paid 20) is quite good. I definitely have significant improvement in cutting/engraving performance over the stock lens and it has held up well so far. I'll go ahead and say that this was a good purchase for my situation - the specs say it is good for up to a 200w laser and considering how big a difference I've seen in my performance it would be interesting to see how true that is. If you're on the fence trying to find a safe lens then I would just go for it - I think most people will be happy with this lens.

it is what it says it is

The lens worked better than the one that came with my laser. I would recommend this lens.

There are better lens but at a much higher cost!

Good quality lens. Worked well on my red and black made in China laser!

Produces a very sharp clean point. Don't try to cut anything thicker than 2.5mm though beam gets wide very quickly.