---
product_id: 45261360
title: "20mm CO2 Laser Lens, 50.8mm Focal Length, PVD ZnSe Material, 30W-100W Compatible, For CO2 Laser Engraving & Cutting"
brand: "cncoletech"
price: "A$56"
currency: AUD
in_stock: true
reviews_count: 13
category: "Cncoletech"
url: https://www.desertcart.com.au/products/45261360-20mm-co2-laser-lens-50-8mm-focal-length-pvd-znse
store_origin: AU
region: Australia
---

# 50.8mm focal length for sharp focus Compatible with 30W-100W power range 20mm precision diameter 20mm CO2 Laser Lens, 50.8mm Focal Length, PVD ZnSe Material, 30W-100W Compatible, For CO2 Laser Engraving & Cutting

**Brand:** cncoletech
**Price:** A$56
**Availability:** ✅ In Stock

## Summary

> 🎯 Sharpen your laser game with pinpoint precision!

## Quick Answers

- **What is this?** 20mm CO2 Laser Lens, 50.8mm Focal Length, PVD ZnSe Material, 30W-100W Compatible, For CO2 Laser Engraving & Cutting by cncoletech
- **How much does it cost?** A$56 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/45261360-20mm-co2-laser-lens-50-8mm-focal-length-pvd-znse)

## Best For

- cncoletech enthusiasts

## Why This Product

- Trusted cncoletech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Integration:** Standard 20mm diameter and 50.8mm focal length fit most CO2 laser machines perfectly
- • **Crystal-Clear Precision:** ≥99.5% transmittance ensures maximum laser efficiency
- • **Durable PVD ZnSe Coating:** Double-sided solid coating resists heat and wear for long-lasting performance
- • **Powerhouse Compatibility:** Seamlessly supports 30W to 100W CO2 lasers for versatile use
- • **Sharper Focus, Faster Cuts:** Smaller focusing spot size concentrates energy for superior engraving and cutting speed

## Overview

The CNCOLETECH 20mm CO2 Laser Lens features a 50.8mm focal length and high-quality PVD ZnSe material with ≥99.5% transmittance. Designed for 30W-100W CO2 laser engraving and cutting machines, it offers durable double-sided coating, excellent optical clarity, and a smaller focusing spot size to boost efficiency and precision in your laser projects.

## Description

Buy CNCOLETECH 20mm CO2 Laser Lens, 50.8mm Focal Length, PVD ZnSe Material, 30W-100W Compatible, For CO2 Laser Engraving & Cutting: Optics - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great lens - I've been buying inexpensive lenses for my CO2 laser on desertcart for a couple of years now and have never had a problem with them. I've tried lenses that cost twice as much and saw absolutely no difference in performance. I consider lenses to be a consumable and thus the less expensive the better and these work well.
Review: Everything as advertised, works better than original. - Why did you pick this product vs others?: The item met the specifications I needed.

## Features

- Material: High quality PVD ZnSe material. Compatible power: 30W-100W
- Diameter: 20mm/0.79"; Focal Length:50.8mm/2"; Thickness:2.0-2.2mm/0.08"; Transmittance: ≥99.5%
- Exquisite Technology: Superb Double-sided solid coating, precision slicing, polishing and grinding process, Reduced laser loss, wiping resistant, high temperature resistance, excellent optical properties, high working efficiency.
- High efficiency: PVD ZnSe CO2 laser focus lens has Focusing Spot Size more Smaller, the energy is more concentrated, making the CO2 laser engraving, cutting machine more efficient.
- Application: CO2 laser lens are mainly used in CO2 laser engraving and cutting well.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01FEOP5TW |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #64,252 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #153 in Jewelry Making Engraving Machines & Tools |
| Brand | CNCOLETECH |
| Color | 20mm |
| Customer Reviews | 4.6 4.6 out of 5 stars (438) |
| Date First Available | May 9, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.634 ounces |
| Item model number | 905211 |
| Manufacturer | Shanghai Top Nine Industrial Co.,Ltd |
| Material | ZnSe |
| Operation Mode | Automatic |
| Package Dimensions | 2.83 x 2.4 x 0.91 inches |
| Part Number | LENS-20-508 |
| Shape | Round |
| Size | Dia:20mm FL:50.8mm/2" |
| Style | PVD ZnSe |

## Product Details

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

## Images

![20mm CO2 Laser Lens, 50.8mm Focal Length, PVD ZnSe Material, 30W-100W Compatible, For CO2 Laser Engraving & Cutting - Image 1](https://m.media-amazon.com/images/I/51Zw9NEIwOL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: The focus of this lens is 101.6mm**
A: 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.

**Q: What is the purpose?**
A: It's good for 40W-150W CO2 laser tube / laser enngraving and cutting machine.

**Q: What is the purpose?**
A: To Control The focal distance between the laser and the material surface.

**Q: it says 20 pieces for this.... do you get 20 lenses?**
A: por el precio parece que solo uno

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great lens
*by S***M on September 7, 2025*

I've been buying inexpensive lenses for my CO2 laser on Amazon for a couple of years now and have never had a problem with them. I've tried lenses that cost twice as much and saw absolutely no difference in performance. I consider lenses to be a consumable and thus the less expensive the better and these work well.

### ⭐⭐⭐⭐⭐ Everything as advertised, works better than original.
*by D***I on June 21, 2025*

Why did you pick this product vs others?: The item met the specifications I needed.

### ⭐⭐⭐⭐⭐ Excelente
*by J***R on January 23, 2026*

Excelente

## Frequently Bought Together

- CNCOLETECH 20mm CO2 Laser Lens, 50.8mm Focal Length, PVD ZnSe Material, 30W-100W Compatible, For CO2 Laser Engraving & Cutting
- Cloudray Mo Mirror Dia 25mm (0.98 Inch) Thk 3mm (0.12 Inch) for CO2 laser engraving cutting machine Pack of 3PCS
- Cloudray CO2 Laser Lens 20mm Laser Mirror CO2 Laser Focal Lens CO2 Focus Lens,CVD ZnSe for CO2 Laser Engraving Cutting Machine,Laser Cutter 40W-200W,Dia 20mm FL50.8mm

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**Shop now:** [https://www.desertcart.com.au/products/45261360-20mm-co2-laser-lens-50-8mm-focal-length-pvd-znse](https://www.desertcart.com.au/products/45261360-20mm-co2-laser-lens-50-8mm-focal-length-pvd-znse)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-21*