The focus of this lens is 101.6mm

My set up is 2" (50.8 mm). if you're having trouble, the lens may be installed upside down. Theory says: Convex side towards the beam (up). Western laser machines - and Korean -always has Convex up. Chinese used to set Convex down.

It's good for 40W-150W CO2 laser tube / laser enngraving and cutting machine.

To Control The focal distance between the laser and the material surface.

it says 20 pieces for this.... do you get 20 lenses?

por el precio parece que solo uno

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20mm CO2 Laser Lens, 50.8mm Focal Length, PVD ZnSe Material, 30W-100W Compatible, For CO2 Laser Engraving & Cutting

20mm CO2 Laser Lens, 50.8mm Focal Length, PVD ZnSe Material, 30W-100W Compatible, For CO2 Laser Engraving & Cutting

4.5/5

Product ID: 45261360

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Details

Brand
CNCOLETECH
Material
ZnSe
Color
20mm
Style
PVD ZnSe
Item Weight
0.02 Kilograms

🎯50.8mm focal length for sharp focus

🔥Compatible with 30W-100W power range

🔬20mm precision diameter

Description

⚡️ Sharpen your laser game with pinpoint precision!

EFFORTLESS INTEGRATION - Compact 20mm diameter and 50.8mm focal length fit standard laser setups for quick upgrades
SEAMLESS COMPATIBILITY - Works flawlessly with CO2 lasers from 30W up to 100W, perfect for versatile industrial needs
MAXIMIZED LASER EFFICIENCY - Smaller focusing spot size concentrates energy for faster, cleaner cuts and engravings
PRECISION ENGINEERED OPTICS - PVD ZnSe material with ≥99.5% transmittance ensures crystal-clear laser performance
DURABILITY MEETS PERFORMANCE - Double-sided solid coating resists wiping and high temperatures for long-lasting use

This 20mm CO2 laser lens features a 50.8mm focal length and is crafted from high-quality PVD ZnSe material with over 99.5% transmittance. Designed for 30W to 100W CO2 laser machines, it offers superior focusing with a smaller spot size, enhancing engraving and cutting efficiency. Its double-sided solid coating ensures durability against heat and wear, making it an essential upgrade for professional laser applications.

Specifications

Brand	CNCOLETECH
Material	ZnSe
Color	20mm
Style	PVD ZnSe
Item Weight	0.02 Kilograms
Operation Mode	Automatic
Manufacturer	Shanghai Top Nine Industrial Co.,Ltd
Part Number	LENS-20-508
Item Weight	0.634 ounces
Package Dimensions	2.83 x 2.4 x 0.91 inches
Item model number	905211
Is Discontinued By Manufacturer	No
Size	Dia:20mm FL:50.8mm/2"
Shape	Round
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

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Fantastic and great service. Shipping was faster than expected.

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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€ 48.87

Duties & taxes incl.

Slovakiastore

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago