Find the Right Product for Your Machine

American Photonics  |  SKU: LS-2165-38.1FL

21mm diameter lens tubes with ZnSe focus lens. or 3pc Kit +Alignment Tool

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Focal length

Care information

High care information about CO2 laser lenses, fiber laser protective windows, and
fiber laser lenses is essential to ensure the optimal performance and longevity
of these critical components in laser systems. Here are some key points to consider:

CO2 Laser Lenses:

Regularly clean CO2 laser lenses to remove dust, debris, and residue. Use a
soft, lint-free cloth or lens cleaning tissue. Avoid using abrasive materials
that may scratch the lens.

Always handle CO2 lenses with clean hands or lint-free gloves to avoid transferring oils or contaminants onto the lens surface.

Store lenses in a clean, dry, and dust-free environment to prevent damage and
maintain their integrity.

Properly align CO2 lenses within the laser system to ensure efficient laser
beam delivery and focus.

Regularly inspect lenses for signs of damage, scratches, or deterioration.
Replace any damaged or worn lenses promptly.

Laser Protective Windows:

Clean fiber laser protective windows with care to avoid scratches. Use a gentle
cleaning solution and a soft, lint-free cloth.

Keep protective windows in place when the laser system is not in use to prevent
contamination and damage.

If protective windows become damaged, replace them immediately to maintain
laser system safety and performance.

Fiber Laser Lenses:

Clean fiber laser lenses carefully to prevent damage. Use a lens cleaning
solution and a soft, lint-free cloth or lens tissue.

Handle fiber laser lenses with care to avoid fingerprints, oils, or scratches
on the lens surface.

Properly align fiber laser lenses to ensure accurate laser beam focusing and
efficient performance.

Regularly inspect fiber laser lenses for signs of wear, damage, or contamination. Replace any compromised lenses promptly.

Environmental Considerations: Be mindful of environmental factors such as temperature and
humidity, as extreme conditions may affect lens performance.

maintaining high care and attention to detail when handling, cleaning, and
storing CO2 laser lenses, fiber laser protective windows, and fiber laser
lenses will enhance their longevity and contribute to the smooth and reliable
operation of your laser systems. Always follow the manufacturer's guidelines
and best practices for each specific component to ensure optimal results.

Delivery and Shipping


Orders placed before 2:00 pm EST/EDT on a business day
(Monday - Friday) will ship the same day.
Orders placed after 2:00 pm EST/EDT may not be be shipped
until the next business day.

Our business hours are Monday to Friday, 9 am-4:30 pm.

Orders placed after business hours will not be processed
until the next business day.

Orders placed during the weekend (Saturday - Sunday) or
holiday will be shipped on the next business day.

All packages are shipped FOB ORIGIN – These shipping terms
are characteristic of a “SHIPMENT CONTRACT” and the seller bears the expense
and risk of putting the goods in the possession of the carrier. Title transfers to the buyer at the point when the goods leave the shipper’s loading dock but reverts back to the seller if the buyer follows the correct procedures of notifying the seller of “breach” by “rightfully revoking cceptance.” Even if “breach” has occurred, the buyer remains responsible for filing “carrier loss

Where Precision Meets Quality: Buy with Confidence.
Our CNC Fabrication and ISO Certified Excellence Ensure the Best Product at the Best Price.

American Photonics -21mm diameter lens tubes with ZnSe focus lens. or 3pc Kit +Alignment Tool

🧼 Hassle-Free Lens Maintenance: Keep your lens crystal-clear without even touching it. 🚫👆

🎯 Zero-Stress Focusing: The lens is glued in the tube for easy and stress-free focusing. 🧘

Pick Your Ideal Focal Length 📏

  • 38.1mm (1.5"): Perfect for high-precision engraving and light cutting tasks.
  • 50.8mm (2.0"): A versatile choice for engraving and medium cuts.
  • 63.5mm (2.5"): Ideal for deeper cuts and thicker materials.
  • 101.6mm (4.0"): When you need to go deep or work with super-thick materials.

💌 Custom Focal Lengths: Need a different focal length? We've got you covered—for the same price!

🤖 Compatibility Heaven 🌟

This kit is compatible with a broad range of CO2 Laser Machines, including but not limited to:

Brand - OEM Machine Lens diameter Mirror link RLA Alignment Tool Kit link
Camfive Camfive 20mm 25mm 21mm RLA 21mm kit
Camfive Camfive 19.05mm 25mm 21mm RLA 21mm kit
Thunder Laser Thunder Nova series 20mm 25mm 21mm RLA 21mm kit
Bescutter Bescutter dual head 20mm 25mm 21mm RLA 21mm kit
Red Sail Laser Red Sail Laser 700 12.7mm 20mm 21mm RLA 21mm kit

 🎥 Watch the video to pick the correct glued lens tube for your machine.

📐 Precision Guaranteed 🎯

APC guarantees a +/- 0.15mm (.006") tolerance on all of our lens focal lengths.

📏 Perfect Focal Point 🔋

The distance from the front of the nozzle to the focal point is exactly 10.5mm—just like a AAA battery.

🛠️ Professional Mounting 🌟

We highly recommend letting us mount your lens. We'll do it to the highest standards in the best possible environment.

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Customer Reviews

Based on 4 reviews
Lee Landis
1.5 laser Thunder Nova

Awesome product.

Chuck Thurman

Very happy with the purchase and the service. Found I had made a mistake on my order. Called and the order had been filled but not yet been picked up. The box was retrieved and the correction was made on the spot so the order still shipped as originally planned. Great job taking care of me. Product works great as expected. Earned my repeat business!


Simply the very best lenses out there

Jenna K Turner
Optics and Service (by Lou) absolutely stellar!!!

I am so incredibly pleased with this product, it is my second time purchasing the kit from this company!  I got distracted while ordering and ordered the wrong product (without noticing) but less than ten minutes later, I got a call from Lou, who noticed my error...spent time on the phone with me talking me through my order, got me a refund and linked me to my new order within minutes.  Lou also stayed on the phone with me to make sure that I understood what each lens was used for and capable of.  I am so beyond pleased and thrilled with Lou's customer service!!!  I will continue to use this company and hopefully Lou forever and ever!!  THANKS LOU!!!!

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