MCWlaser Protective Windows USA CVD ZnSe

$29.90 $19.90 Save 33%
  • Shipping within 1-2 business days.
  • By Expedited Shipping (by DHL/Fedex/UPS/DPD).
  • Within 5-7 days delivery.
Size: 12.7x2.5mm
  • MCWlaser Official Quality Inspection (100% brand new original authentic).
  • Secure payments; Lifetime Tech Support (Specialists).
  • Support Shipping Worldwide, US and EU stock.
  • Good customer service. Please contact us at
Size: 12.7x2.5mm


1. ZnSe Protective Windows
Choose high-quality imported crystal materials, which can withstand high-power lasers.
2.The double-sided coating is firm, wipe-resistant, not easy to fall off, and has a long service life
3. High-precision processing,.frst use an excellent substrate, through cutting. polishing, coating, and other processes to form a total
4. High optical performance, high transmittance above 99.5%.
5. replacement DIY part for Co2 laser engraving, cutting & marking machine & CO2 laser head



. Material: Znse
. Wavelength:10.6um
. Shape Tolerance:+0.00/-0.1mm. Thickness Tolerance:士0.2mm.
. Finish:20-10
. Effective Aperture: > 90%. Eccentric: <3'
. Inverted: <0.2x45°
. Coating:10.6um Double-sided anti-reflection


Material Diameter Thickness Coating
CVD ZnSe 12.7 2.5 AR/AR10.6um
PVD ZnSe 19.05 2 AR/AR 10.6um
CVD ZnSe 20 2 AR/AR10.6um
CVD ZnSe 20 3 AR/AR 10.6um
CVD ZnSe 25 3 AR/AR10.6um
CVD ZnSe 38.1 3 AR/AR 10.6um

Note: Thickness Tolerance: ±0.2mm




You can contact our head-office directly,also you can contact our agent which is near you.Of course,free live-chat is available and you can get help immediately.

Customer Reviews

Based on 5 reviews

Exactly what I needed to replace the mirrors in my laser

Andre Rocha

Works great!!! Great quality arrived quickly as I needed this to complete a job. I would highly recommend this lens!


Great value for a good quality lens. Focus was clean on install. Coating is more substantial than other inexpensive lenses that I’ve tried.


Very well protected and packaged, something to take into account in a delicate product.

In my case I have used this lens as a focusing lens for a thermal camera. It is a very economical solution with very good results.

You get a great focus at a very short distance from the object without disturbing the infrared.


The lens must be fitted correctly and not touched with the fingers. Make sure you buy the right diameter. the lens will help you work well!!

Please View FAQ Here

You are welcome to contact us anytime via our live chat or

What about the shipping method and time?

By Expedited Shipping (by DHL/Fedex/UPS/DPD), door-to-door service.
1. General products,
CN Warehouse: 5-9 Business Days
UAS Warehouse: 3-5 Business Days
EU Warehouse:5-7 Business Days

2. Customized products (Only Support Shippment From China Warehouse)
The average period of production: 5-6 Business Days
Shipping: 5-9 Business Days
(Notification: Customs clearance inspections may cause delays of 2-3 days in logistics)1. General products

By Sea or Air to sea or airport (door-to-door service is optional)
It is for larger cargo.
The delivery time depends on the detailed shipping address, please check the exact time and cost with us.

What about the Customs Duty and VAT or Tax?

1.If your order was shipped from China,the pice doesn't include the import tariff duty, tax, or VAT.
The tariff duty, tax or VAT depend on local law and policy in difference country. The buyer needs to cover the cost.
2.If your order was shipped locally, such as from US ,AU or Europe,the price includes the duty,tax or VAT. The buyer don't need to pay customs duty, tax or VAT.
3 .Part of products in EU and US support PICK UP ON SITE Please check with us about the detail if you need.

If you can provide the invoice?

Yes,if you need the invoice,please contact with

What is your product warranty like?

All customer support services and policies will be only applied to orders on
MCWlaser Amazon Store

If your products are not purchased from our official website or our Amazon Store, but purchased through another third-party platform, we will not be responsible for your order.

Please view our detailed warranty instructions:

If you have any questions, please contact us:
Whatsapp/Wechat: 0086 18121236578

I failed to process the payment via credit card, what should I do?

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  • Use an alternative payment method: If the problem persists, you may want to consider using an alternative payment method, such as PayPal or bank transfer.

Remember to always exercise caution when making online purchases and to protect your personal and financial information.

Product and Service Support

Lifetime Technical Support

Regardless of whether the product purchased by the customer has reached the warranty period, MCWlaser provides lifelong technical support for all customers who purchase products at

Online Support & Expert Support

For complex technical issues, we provide expert support services (only for customers who purchase products at, and our experts can assist customers to solve problems through remote operation or video calls.

Discounts and Offers

We offer regular promotions, follow us on our website and social platforms, or ask our online customers. All promo codes are valid only at Coupons can only be used for shopping and cannot be exchanged for cash.

Quality Certification

Our products comply with CE certification and other quality certifications, you can buy our products with confidence. If you need certified documents to help you gain confidence, please contact our customers online or send us an email: