Find American Photonics replacement optics and upgrades for selected OMTech® CO₂ laser systems. Explore lenses, mirror sets, lens tubes and alignment tools, with options for routine maintenance and machine upgrades.
Start with your machine model and laser head. Parts are not interchangeable across every OMTech machine. Confirm your model, head version and optical dimensions before choosing a variant.
OMTech Polar: magnetic lens upgrades
The APC LensPro is designed for OMTech Polar and Gweike Cloud CO₂ lasers. Its magnetic quick-release design makes removing the lens assembly for maintenance easier. Choose from available focal lengths and individual components or kits on the product page.
LensPro uses the original Polar air-assist hardware. No additional American Photonics air-assist adaptor is required.
Shop APC LensPro for OMTech Polar
Shop the Polar / Cloud Silver Protective Window
K40 and K40+: check the head version first

K40, K40E and K40+ machines can require different alignment tools and lens-head configurations. Do not select parts based on the K40 name alone.
The newer K40+ configuration listed in our alignment-tool guide uses a 16mm tool with a separate adaptor. Review the adaptor options and confirm your head before ordering.
Choose an alignment tool for your machine
Other OMTech CO₂ models: lens tubes and kits
Example lens-kit configuration shown. Check the selected variant's contents and machine fit before ordering.
For selected MF and AF machines, American Photonics offers mounted ZnSe lens-tube assemblies and lens kits. Confirm the exact head version: newer and older AF heads can use different assemblies and adaptors.
- Explore 16mm lens tubes and kits for selected newer OMTech head configurations. Confirm the required adaptor and included components.
- Explore 16.15mm lens tubes and kits for selected configurations. Check the machine and head fit before purchasing.
Lens-tube diameter is not necessarily the diameter of the lens inside it. Use the assembly specifications, not the tube size alone, when checking fit.
Replacement focus lenses and mirror sets
Replacing a bare lens or mirror? Match the original optical specifications rather than choosing by machine brand alone.
- 20mm ZnSe focus lenses with 2mm edge thickness for compatible 10.6µm CO₂ systems. Confirm diameter, edge thickness and focal length.
- Silicon mirror three-piece sets available in 19mm, 20mm, 25mm and 25.4mm diameters. Confirm mirror diameter and thickness separately from lens specifications.
Before you order
- Identify your exact machine model and laser-head version.
- For bare lenses, check diameter, edge thickness and focal length.
- For mirrors, check diameter and thickness.
- For lens tubes and alignment tools, check head fit and whether an adaptor is required.
- Review kit contents before adding a separate tool, nozzle or tube.
Not sure which configuration you need? Contact American Photonics with your machine model, a photo of the laser head and the dimensions of your existing parts before placing your order.
Frequently asked questions
Do these parts fit every OMTech laser?
No. These products are intended for selected compatible CO₂ laser configurations. Fit depends on the machine, head version and optical specifications.
Does the Polar LensPro need an extra air-assist adaptor?
No. The LensPro is designed to use the original Polar / Gweike Cloud air-assist hardware.
Should I add an alignment tool to a lens kit?
Check the selected kit's contents first. Some lens kits already include an alignment tool.
American Photonics is an independent manufacturer of compatible replacement components and is not affiliated with or endorsed by OMTech. OMTech and other referenced trademarks belong to their respective owners and are used for identification and compatibility purposes only.


