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Cloudray 20mm CO2 Laser Lens, PVD ZnSe Dia 20mm FL50.8mm

Based on 148 reviews
Condition: New
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$24.99
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Availability: In Stock.
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Arrives Wednesday, Nov 4
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At a glance

Condition
New
Color
Dia 20mm(0.79")
Size
FL50.8mm(2")
Model
PVD ZnSe D20 F50.8 ET2 (Meniscus)
Dimensions
2"L x 0.79"W
Material
China PVD ZnSe Material
Style
CO2 Laser Focus Lens
In the box
1 pcs lens

Features 5

  • Material: High Quality PVD Znse,compatible power: 30W-100W
  • Diameter: 20mm/0.79"; Focal Length: 50.8mm/2"; Thickness: 2.6mm/0.1"
  • Shape: Meniscus; Transmittance: 99.5%;Package includes: 1 x Lens
  • Superb Coating Process: Double-sided Solid Coating. Wiping Resistance. Long Working Life

Description

The Focal Length is the distance between the lens and the cutting material. The cutting requirements for different materials vary in terms of focal length. Typically, thinner materials require longer focal lengths, while thicker materials require shorter focal lengths. This is because the position of the focal point affects the focusing depth and diameter of the laser beam. In the CO2 cutting process, the common optical path structure typically includes one focusing lens and two reflecting mirrors. The focusing lens is located after the output coupling mirror and is primarily used to adjust the direction and shape of the laser, making it as symmetrical as possible, and guiding the laser beam to the subsequent reflecting mirrors. 1. Use appropriate cleaning materials: Use gentle cleaning materials such as lens cleaning solution or lens cleaning tissues specifically designed for optical surfaces. 2. Clean in a dust-free environment: Ensure that the cleaning process is carried out in a clean and dust-free environment to prevent particles from getting onto the lens surface during cleaning. 3. Avoid excessive force,Excessive force can cause damage to the lens or misalignment of its optical properties. Ensuring lens quality: CO2 lenses undergo high energy and high temperature in laser cutting processes, so their quality and durability are crucial. Testing can ensure that the lens materials, manufacturing, and coatings meet the quality requirements. Determining optical performance: The optical performance of CO2 lenses is highly important for cutting and laser transport efficiency and quality. Testing can be used to evaluate optical performance parameters such as transmittance, reflectance, and scatter to ensure the proper functioning of the lens. Detecting surface conditions: Testing can be used to detect scratches, dirt, or other defects on the lens surface. In summary, CO2 lens testing can ensure that the lens quality, optical performance, and surface conditions meet the requirements, thus guaranteeing cutting quality and equipment reliability. CVD Focus Lens PVD Focus Lens II-VI Focus Lens GaAs Focus Lens Si Laser Mirror Mo Laser Mirror

Specs 20

Brand Cloudray
Material China PVD ZnSe Material
Color Dia 20mm(0.79")
Product Dimensions 2"L x 0.79"W
Style CO2 Laser Focus Lens
Brand Name Cloudray
UPC 669819730333
Number of Packs 1

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Nov 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


Great product
Color: Dia 20mm(0.79") Size: FL63.5mm(2.5")(FBM)
Lens works great. Laser cuts thru wood like a charm. Will buy again.
Reviewed in the United States on December 29, 2023 by Joseph Nicholson

Very good quality
Color: Dia 20mm(0.79") Size: FL50.8mm(2")
Very good lens, over 70 hours use clean it and will last long time
Reviewed in the United States on April 5, 2025 by Amazon Customer

Economical
Color: Dia 20mm(0.79") Size: FL50.8mm(2")
This is an excellent economical replacement for my laser. I will definitely buy this again. It works perfectly.
Reviewed in the United States on December 17, 2024 by Stephanie L Buchanan

Cloudray 20mm CO2 Laser Lens
Color: Dia 20mm(0.79") Size: FL50.8mm(2")
I bought the Cloudray 20mm CO2 Laser Lens to use it with my HIKMICRO B01 Thermal Camera as a macro lens. It works really well! I confess that I was expecting a bit more quality on the image, but I can’t complain, the quality of the image is good enough for telling apart small SMD components in a PCB which is what I wanted this for. For electronics diagnosis it really makes a difference! I got the 3D model from thingiverse, thing: 5339476. ... show more
Reviewed in the United States on March 2, 2025 by W. O.

Very good quality
Color: Dia 20mm(0.79") Size: FL63.5mm(2.5")(FBM)
I am very happy with this lense. Would purchase again.
Reviewed in the United States on January 29, 2025 by Carl K.

Cheaper and Better than the Laser OEM!
This lens immediately improved the quality of my cuts. Not sure about longevity yet, but at this print I can buy almost a dozen before reaching the OEM cost from Full Spectrum.
Reviewed in the United States on December 19, 2019 by Bill L.

Game Changer!
Color: Dia 20mm(0.79") Size: FL50.8mm(2")
I kept seeing suggestions in laser groups to upgrade from my stock Omtech lens. I decided to give cloudray a try as it was recommended as a “budget” upgrade…well let me tell you, my cuts are so much cleaner and my efficiency is up as well. Rookie tip-don’t forget to run a ramp test to make sure your focal height is right when you install the new lens, because it was completely different from the stock lens focal length. ... show more
Reviewed in the United States on January 15, 2023 by lauren thompson

Great lense
Color: Dia 20mm(0.79") Size: FL50.8mm(2")
These lenses are great work horse lenses for any commercial or diy laser engraver project.
Reviewed in the United States on September 14, 2024 by Arron C.
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