---
product_id: 45261360
title: "CNCOLETECH 20mm CO2 Laser Lens, 50.8mm Focal Length, PVD ZnSe Material, 30W-100W Compatible, For CO2 Laser Engraving & Cutting"
brand: "cncoletech"
price: "A$58"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/45261360-cncoletech-20mm-co2-laser-lens-50-8mm-focal-length-pvd
store_origin: AU
region: Australia
---

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

**Brand:** cncoletech
**Price:** A$58
**Availability:** ✅ In Stock

## Summary

> ⚡️ Sharpen your laser game with pinpoint precision!

## Quick Answers

- **What is this?** CNCOLETECH 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$58 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-cncoletech-20mm-co2-laser-lens-50-8mm-focal-length-pvd)

## 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:** 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

## Overview

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.

## Description

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

## 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 |
|---------------|-------|
| 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 |

## Product Details

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

## Images

![CNCOLETECH 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

## Frequently Bought Together

- CNCOLETECH 20mm CO2 Laser Lens, 50.8mm Focal Length, PVD ZnSe Material, 30W-100W Compatible, For CO2 Laser Engraving & Cutting
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- 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-cncoletech-20mm-co2-laser-lens-50-8mm-focal-length-pvd](https://www.desertcart.com.au/products/45261360-cncoletech-20mm-co2-laser-lens-50-8mm-focal-length-pvd)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-23*