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Description
20mm CVD ZnSe Focal Focus Lens for 100W- 130W Laser Engraver CutterCutting Edge Features: HIGH QUALITY CVD ZnSe: OMTech's powerful focus lenses are manufactured from premium zinc selenium via chemical vapor deposition for superior optical properties. HIGH TRANSMITTANCE: Both sides of each lens are covered with strongly antireflective coatings to achieve at least 99. 5% transmittance rate for infrared light at a wavelength of 10. 6 microns. LASTING DURABILITY: Our laser engraver focus lenses' double sided coating
Cutting Edge Features:
- HIGH-QUALITY CVD ZnSe: OMTech's powerful focus lenses are manufactured from premium zinc selenium via chemical vapor deposition for superior optical properties.
- HIGH TRANSMITTANCE: Both sides of each lens are covered with strongly antireflective coatings to achieve at least 99.5% transmittance rate for infrared light at a wavelength of 10.6 microns.
- LASTING DURABILITY: Our laser engraver focus lenses' double-sided coating process also ensures outstanding scratch resistance for longer service life.
- WIDE COMPATIBILITY: This 20mm laser focus lens fits OMTech 100W-130W CO2 laser engravers. Please check the focal lens diameter in your machine’s manual before purchasing.
- EASY TO USE: The plano-convex shape of OMTech's engraver focal lens lets you install it easily and correctly onto your machine in the proper orientation. Detailed cleaning instructions also help you take proper care of your lens.
Specifications:
- Material: Zinc Selenium
- Color: Yellow
- Diameter: 20mm (0.79")
- Thickness: 2mm (0.08")
- Focal Length: 1.5" (38.1mm)/ 2" (50.8mm)/ 2.5" (63.5mm)/ 3" (76.2mm)/ 4" (101.6mm)
- Rec. Wavelength: 10.6 microns (10600 nm)
- Min. Light Transmittance: 99.5%
- Net Weight: 0.2 oz (5g)
Summary:
It is all smoke and mirrors! As you engrave, debris such as smoke and dust land on your focal lens, building up a layer of residue over time that absorbs laser beam power and can stain the lens permanently. Eventually, this lost power will affect your machine’s precision and throw off your laser settings. To keep your device running at its full potential, we recommend inspecting and cleaning the optics system once a week and replacing the mirrors or focal lens as soon they get damaged.
Package Includes:
1 x CVD ZnSe Focus Lens
Warranty:
- No need to worry! We offer a 1-year warranty on all focal lenses.
Certifications:
- FDA Compliant
- CE Certification
- ISO9001 Quality Certification
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 1
Too many screenshot, not detail explain enough, like a lab manual than a book
Format: Paperback, Format: Paperback
Not recommended this book.
This book is approximately 270 pages long, but around 200 pages are comprised of screenshots, including IDA Pro screenshots, Virustotal result screens, lists of function names, and lists of DLL file names.
This book primarily shows you how to use the tools, which are illustrated mainly through screenshots of the tools' screens and results.
This is a well-structured lab manual that guides you through all the necessary screens and steps to locate the flag.
However, there are too many screenshots, and the concept is not explained in detail.
It is expected that you will have a basic understanding to follow the lab manual.
And this is not colour printing, and the photo was resized, making it a bit hard to read the screenshot details.
If you are at the GREM level, you may already be familiar with using the tools.
Unless you want a quick refresher on your lab skills.
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Reviewed in the United States on September 26, 2025
★★★★★ 5
Exceptional Book for Malware Analysts and Security Researchers
Format: Paperback
Uriel Kosayev did it again! MAoS is his second book, following his great first one, Antivirus Bypass Techniques.
This new book takes things to the next level with a deep dive into real-world malware and reverse engineering tactics that every security researcher can learn from. It’s packed with practical examples and insights that clearly come from real experience in the field.
If you’re into malware analysis or cybersecurity research, this book is a must-read. Uriel’s passion and expertise truly stand out on every page. Highly recommended!
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Reviewed in the United States on October 25, 2025
★★★★★ 5
outstanding and highly informative book
Format: Paperback
MAoS - Malware Analysis on Steroids: Fighting Malware to the Death - Real-World Threats and Reverse Engineering Tactics by Uriel Kosayev is an outstanding and highly informative book. This is the second book I’ve read from him, after Antivirus Bypass Techniques, and once again I found the content to be extremely practical, well-structured, and insightful. Uriel has a way of explaining complex malware analysis and reverse engineering concepts in a way that is both approachable and deeply technical. The real-world tactics and examples make it not just a book you read once, but a reference you’ll return to often. Without a doubt, another excellent resource—I’m giving it 5 stars.
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Reviewed in the United States on September 10, 2025
★★★★★ 4
good
Format: Paperback
Good practical content, quality of images could be improved
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Reviewed in the United States on October 13, 2025
★★★★★ 5
Essential for Malware Hunters
Format: Hardcover
MAoS - Malware Analysis on Steroids is a clear, practical, and engaging guide to real-world malware threats. It blends hands-on reverse engineering tactics with modern case studies, making it both highly technical and easy to follow. Whether you’re new to malware analysis or a seasoned security pro, this book sharpens your skills and mindset for the fight against today’s threats.
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Reviewed in the United States on September 20, 2025