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American Photonics Lens: Approved by Laser Experts and Manufacturers
For the best-infrared optics, we choose CVD ZnSe from the USA. It is the best material. PVD ZnSe and GaAs from China are of low quality. OMTech and AP laser specialists tested and approved our focal lenses on their machines.
Introducing the new 18 mm Lens:
A 100% American-Made Option with Glue, Aluminum Mount, and Better Thermal Conductivity
1. Labeled Lenses: No More Guesswork with Focal Length
You don’t have to guess the focal length of your lenses because we label them.
2. Position Your Lenses with Confidence Using BIM IN Markings
You can easily position our lenses because they have BIM IN markings.
3. The Benefits of Glue for the Lens: No O-ring, No Stress, and No Power Loss
The glue keeps the lens stress-free and eliminates the need for an O-ring. Our lens prevents you from over-tightening it, causing power loss, lens overheating, and beam distortion.
4. Clean the Lens with Ease and Protection Using the Aluminum Mount
You can easily protect and hold the lens when cleaning with the aluminum mount.
Top 10 reasons why a lens fails?
1- Not cleaning the lens often enough.
2- Water in your air assist.
3- Oil in your air assist.
4- Accidentally left off the air assist.
5- Overtightening your lens (not using an O-ring).
6- Using cleaning products containing water or dies.
7- Poor beam alignment causing the head to overheat.
8- Dropping or chipping the lens while cleaning it.
9- Use of cheap nonlaser grade ZnSe.
10- Poor coating and optical quality.
Upgrades to consider.
- Good air compressor
- Desiccant filter or air dryer
- Coalescing filter
- Automatic air off and on
- Easy clean high quality glued lens from American Photonics
38.1mm (1.5")
50.8mm (2.0")
63.5mm (2.5")
101.6mm (4.0")
How to select the correct lens for the job and optical setup
Optical setup
The best possible optical setup for your machine and the truth about the compound lens system.
I computer model and manufacture Infrared optical systems. The best possible setup would start with perfect beam alignment. Poor beam alignment combined with a multiple-element system (compound lens) could give you a worse focal point than a single-element system (single lens). The second most crucial thing is optical quality. Differences like material, edge thickness variation, sphericity (how perfect each radius is), and surface quality. These are particularly important if you want the best setup for your machine. Errors in the optics are compounded in multiple-element systems. Compound lens systems are better on paper. But if you work first on beam alignment and get the best possible optics for your system, you save money. After focusing on beam alignment and optical quality, your engraving quality is as good as Epilog or Trotec. They are single-element systems. Here are some backup links to what I am saying.
paradug
Reviewed in the United States on June 2, 2023
American Photonics’ ZnSe CO2 laser focus lens solves three of the problems you fumble with when changing or cleaning a laser focus lens. It has a metal ring that gives you a place to safely handle the lens. The metal ring also protects the lens when placed in the lens housing from cracking due to over tightening the holder’s lens cap. Finally, the metal ring also provides a place to label what direction the lens should be orientated in the lens holder and the lens’s focus distance. For these advantages and hopefully quality, you pay a bit more.The lens and its metal ring are made in the USA. This is nice and should make getting support easier if it is needed. The diameter of the lens’s metal ring of the model I have is 18mm and the focus is 2 inches. The manufacturer offers a variety of lens diameters and focus distances. This is a meniscus shaped lens, which offers some advantages over a plano-convex shaped lens.This lens can be used on an unmodified K40 laser. The 4mm height of the aluminum ring means that the lens holder cap will not screw on as completely as without it, but it will work.This is a nice lens with some useful advantages due to the way the actual lens is mounted. I typically get a lot of life out of my laser lens, and I expect this one to last for a good while.
Keith
Reviewed in the United States on December 4, 2023
Excellent product much better than the cheaper products well worth the few extra dollars
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