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๐Ÿ” shina znse precision laser cutting lens logo

๐Ÿ” SHINA ZnSe Precision Laser Cutting Lens Review

3

ยท

Average

Revainrating 3 out of 5ย ย 
Ratingย 
3.0
๐Ÿ”ญ Optics, ๐Ÿงฌ Science Education

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Description of ๐Ÿ” SHINA ZnSe Precision Laser Cutting Lens

Mateial: Znse. Diameter: 20mm. Focal length: 1''/25.4mm, 1.5''/38.1mm, 2''/50.8mm, 2.5''/63.5'', 3''/76.2mm, 4''/101.6mm. Thickness:approximate 2mm. Edge thickness variation (ETV):<= 0.002''.

Reviews

Global ratings 3
  • 5
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  • 4
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  • 3
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  • 2
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  • 1
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Type of review

Revainrating 5 out of 5

Works almost the same as a much more expensive lens.

I love these lenses. They're cheap enough that I could buy a few, and I didn't have to be so paranoid about breaking a $200 lens. I have a few in stock. The quality is almost the same as our expensive lens with no practical difference in performance/cutting power.

Pros
  • Thickness: about 2mm
Cons
  • Doubt

Revainrating 3 out of 5

Please indicate the power for the focal lengths.

I have a 4" lens. The lens seems good, it just doesn't fit a 60w CO2 laser. It would be nice if there was an indicator with an arrow on the lens to make sure it's lined up correctly. Laser power range I will keep the lens hoping to eventually get a larger tube but I can barely engrave the surface with a 60w machine.

Pros
  • Focal Length: 1"/25.4mm, 1.5"/38.1mm, 2"/50.8mm, 2.5"/63.5", 3"/76, 2mm, 4"/101.6mm
Cons
  • No specs

Revainrating 1 out of 5

One of the worst purchases I've ever made from Revain!

I bought two of these lenses and both had a matte finish and were new to lasers. I thought maybe they should be. However, when I put them in the car, they didn't cut at all. I spent 2 hours checking mirror alignment and tried different focal lengths but they never got them to work so I gave up. As a result "I WILL NEVER BUY ANOTHER LASER LENS MADE IN CHINA"!

Pros
  • Edge Thickness Variation (ETV): &lt;= 0.002 inch
Cons
  • Big and bulky