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CO2 Focusing Lens
Laser focus lens
By Cloudray Laser
Features and specifications:
Specifications: • Material: China PVD ZnSe (max 80 W) • Wavelength: 10.6 um • Diameter: 18/19.05/20 mm • Diameter tolerance: +0/-0.1 mm • Focal length: 1.5/2/2.5/3/4/5 inches • Focal length tolerance: ± 2% • Transmittance: 99.5% • Clear aperture (polished) > 90% • AR coating reflectivity < 0.3% • Scratch-dig: 20 - 10
High-quality ZnSe crystal
China PVD ZnSe material Excellent optical poperties Up to 80 W CO2 laser resistance
Superb coating process
Double-sided solid coating Reduces laser loss Laser transmittance up to 99.5%
High precision process
Excellent substrate Precise slicing, polishing, grinding processes High temperature, laser resistance, long working life
Laser light path schematic
1. Laser tube 2. First mirror 3. Second mirror 4. Third mirror 5. Focus lens
1. Lens tube 2. Focus lens (Reminder: Convex side should face laser, Concave side should face material) 3. Lens ring 4. Nozzle 5. Gas nozzle 6. Focal length (distance between lens and cutting/engraving material) 7. Working table
1. Use an air bulb to blow off any loose contaminants. (dust, lint particles) 2. Squeeze a few drops of acetone onto the lens tissue, wetting the complete optic's diameter. (smudges, fingerprints) 3. Using the cotton swab and distilled vinegar, wipe the lens. Immediately use a wet cotton swab to remove any acetic acid, then clean with a clean dry cotton swab. (spittle, oils)
Diameter: 15/19.05/20/25/30/38.1 mm (3 pcs)
Diameter: 19.05/20/25/30/38.1 mm (3 pcs)
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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