What Lens or Mirror Should I Buy for My CO₂ Laser Machine?
Find the Right Replacement Optics in Minutes
Choosing the wrong laser lens or mirror can reduce cutting performance, produce poor engraving quality, and even damage your optics.
American Photonics manufactures over 4,000 CO₂ laser optics for hundreds of laser machine brands including OMTech, Thunder Laser, Boss Laser, AP Lazer, Trotec, Epilog, Full Spectrum, Laguna, Aeon, Monport, Universal Laser Systems, Glowforge, and many others.
The easiest way to find the correct replacement is to use our AI Product Finder.
Don't Guess Your Optics
Your laser machine requires specific components including:
- Lens diameter
- Lens focal length
- Mirror diameter
- Mirror thickness
- Lens tube size
- Alignment tool size
- Complete replacement kit (if applicable)
Even machines from the same manufacturer may use different optics depending on:
- Model
- Production year
- Laser head version
- Manual vs Autofocus
- Factory upgrades
For this reason, selecting optics by machine brand alone is often not enough.
Three Ways to Find the Correct Lens
Option 1 — Use the AI Product Finder ⭐ (Recommended)
Simply enter:
- Brand
- Model
Our Product Finder recommends:
- Correct lens
- Compatible mirrors
- Alignment tool
- Complete replacement kit
Launch Product Finder
Option 2 — Measure Your Existing Lens
The most accurate method is measuring your existing optics.
Measure:
- Lens diameter
- Lens edge thickness
- Focal length (if known)
Common diameters include:
- 12 mm
- 15 mm
- 16.15 mm
- 18 mm
- 19.05 mm
- 20 mm
- 22 mm
- 25.4 mm
Option 3 — Contact Our Team
If you're unsure, send us:
- Machine brand
- Model number
- Wattage
- Production year (if known)
- Photos of the laser head
- Photos of the lens tube
We'll recommend the correct replacement optics.
What Focal Length Should I Choose?
| Focal Length | Best For |
|---|---|
| 1.5" | Fine engraving, stamps, detailed graphics |
| 2.0" | General engraving and cutting |
| 2.5" | Excellent balance of detail and cutting (most popular) |
| 4.0" | Thick materials, foam, acrylic, deep cuts |
Include links to your focal length educational articles.
What Mirror Should I Buy?
Most CO₂ lasers use:
- 20 mm mirrors
- 25 mm mirrors
- 25.4 mm mirrors
- 38.1 mm mirrors
Mirror diameter depends entirely on your laser head—not your laser tube wattage.
Replacing mirrors whenever you replace your lens helps maintain maximum power and beam quality.
When Should I Replace My Lens?
Replace your lens if you notice:
- Reduced cutting performance
- Slower engraving
- Burn marks
- Lens haze
- Cracks
- Chips
- Scratches
- Excessive cleaning no longer improves performance
Why Choose American Photonics?
Instead of generic marketing copy, highlight trust signals:
✅ Made in the USA
✅ ISO Quality Management System
✅ Over 4,000 CO₂ laser optics
✅ Fast shipping
✅ Technical support
✅ OEM replacement and upgrade optics
✅ Trusted by industrial, medical, aerospace, educational, and hobby laser users
Compatible Laser Brands
OMTech
- AF Series
- MF Series
- SH Series
- Polar
- Pronto
- K40
Thunder Laser
- Nova
- Bolt
Boss Laser
- LS Series
- HP Series
AP Lazer
Trotec
Epilog
Full Spectrum
Universal
Aeon
Laguna
Monport
Glowforge
Frequently Asked Questions
Can I use a different focal length?
Yes. Many machines can use multiple focal lengths as long as the lens diameter matches the lens tube. Different focal lengths are optimized for different applications.
Can I upgrade from factory optics?
Yes. Many customers upgrade to American Photonics laser-grade ZnSe lenses and premium mirrors for improved beam transmission, durability, and performance.
How do I know which mirror diameter I need?
Mirror size is determined by your laser head and mirror mounts. If you're unsure, measure your existing mirror or use our Product Finder.
What if my machine isn't listed?
Contact us with your machine information and photos. Our technical team will help identify the correct replacement optics.
Stop Guessing Your Laser Optics
Use the American Photonics AI Product Finder to instantly identify the correct:
- Lens
- Mirror
- Alignment Tool
- Replacement Kit
Or contact our technical team for assistance.
