Pay in installments of $19.00 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
20mm Focal Focus Lens by American Photonics for Up To 200W Laser Engraver CutterAdvanced Specifications: Anti reflective coated lens for <200W. Type: Meniscus Laser Focal Lens Material: Znse Laser Grade(made in the USA) Coating: 10. 6um (AR Both Side) 20mm Diameter 2mm Edge Thickness Diameter Tolerance: +0 0. 13mm Center Thickness Tolerance: 0. 1mm Focal Length Tolerance: < 1% Clear Aperture: >= 90% Diameter Scratch Dig: 40 20 Cutting Edge Features: OMTECH TESTED: Each American Photonics focal lens is tested on OMTech machines
Advanced Specifications:
- Anti-reflective coated lens for <200W.
- Type: Meniscus Laser Focal Lens
- Material: Znse Laser Grade(made in the USA)
- Coating: 10.6um (AR Both Side)
- 20mm Diameter
- 2mm Edge Thickness
- Diameter Tolerance: +0/-0.13mm
- Center Thickness Tolerance: ± 0.1mm
- Focal Length Tolerance: < 1%
- Clear Aperture: >= 90% Diameter
- Scratch/Dig: 40-20
Cutting Edge Features:
- OMTECH TESTED: Each American Photonics focal lens is tested on OMTech machines and approved by our laser specialists.
- QUALITY ZINC SELENIDE: Manufactured with premium zinc selenium via chemical vapor deposition for superior light transmission and heat tolerance.
- EXACTING LENS DIMENSIONS: Each lens is engineered and built with only a 0.003mm margin for error to ensure finer laser focus on high-resolution engravings and enable sharper cutting abilities.
- ULTRA-PURE MANUFACTURING: American Photonics utilizes an ultra-clean production room to ensure every focal lens is free from all impurities, reducing heat damage and ensuring extremely consistent laser beam transmission.
- HANDMADE IN THE USA: Each American Photonics focal lens is cored, polished, edged, coated, and packaged by hand with expert precision in each step.
- EXTREME HEAT TOLERANCE: Crafted to resist heat damage, cracking, and staining. A melting point of 2777°F (1525°C) easily withstands the thermal demands of CO2 laser applications.
- SUPERIOR LIGHT TRANSMITTANCE: Both sides are carefully coated with a strongly anti-reflective finish optimized for infrared light at a wavelength of 10.6 microns.
- LASTING DURABILITY: Our laser engraver focus lenses' double-sided coating process ensures outstanding scratch resistance for longer service life.
- WIDE COMPATIBILITY: This laser focus lens is designed to work with all CO2 laser engravers below 200W. Please check the focal lens diameter in your machine’s manual before purchasing.
Summary:
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.
How to Select the Proper Focal Length:
A lens with a shorter focal length (1.5"–2.5") has a smaller focal point to provide sharper details for high-resolution images. A longer focal length (usually up to 4") has a larger focal point and extended depth of focus (or focus tolerance) which is better suited for cutting applications. Also, keep in mind that using longer focal lengths subtract from your workbed’s Z-depth.
Warranty:
- American Photonics provides a 30-Day 100% Guarantee
Explore more:
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 30 reviews
Sort
Product Reviews
★★★★★ 5
Functional and great look!
Color: Black, Color: Black
This is my third watch I’ve had in the last 10 years. I bought my first one in 2014 when I was doing triathlons. My second one just died after surfing/working in a hospital with it for the last 3-4 years. I could of just changed the battery but for $40 and it will last, I thought hmmm let’s just get a new one.
No complaints! Shipping arrived in 2 days, and the price can’t be beat. If you are looking for a simple watch to wear and not having to worry about getting it messed up this is it! I had a garmin 410xt that I had to charge etc but this watch is extremely convenient and comfortable. High recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 30, 2023
★★★★★ 3
Not great...
Color: Black/Negative
The dial is so dark that I can barely see the numbers. Very, very disappointing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
★★★★★ 5
PERFECT
Color: Black
Watch is light weight. Has a good feel on the wrist and easy to read during the day and easy to read with the indigo back light at night. I have large wrists and this size is good. For smaller people it might be to large. The functions work well and its water tight. Its durable and keeps on ticking.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 4, 2024
★★★★★ 5
Very Good watch
Color: Blackout
The one complaint I hear most often about this watch is it is harder to see in lower lighted conditions. Yes that is true BUT IT HAS INDIGLO so It is not a problem. Most of the time you don't need to turn the light on though. You usually can make out what it says even without the light. Usually if you can't see it then a slight angle change and you can see the time. If you still can't see it....it does have indiglo. It really takes no time at all to hit the button and you can see in any light condition. I have been looking at watches to buy for some time now and have looked at a lot of them. When I first got this in the mail I thought it to be small. I was comparing it to the G-shock series. The ones I was looking at the most was the XL ones. So yes it is small compared to the XL G-shocks. I have an XL watch and found that it gets in the way. When ever my wrist gets bent backwards my hand presses against the watch and restricts my movement that way. This is really the perfect size. One common complaint with Ironman's is they have started integrating the band with the watch. So when the band breaks, which they often did, the watch was useless cause you couldn't replace the band. This one has the replaceable band but still manages to have that integrated look, very nice. I really don't expect the band to break any time soon though. It feels very durable and thick. One thing about the band that I really like is at the end of the band. It has two little "nubbins" that lock in the that loop that holds the excess band in. They really work well. Every watch I have ever owned that little loop moves and releases the excess and then you have to fix it. It has yet to slip off once. All in all in is very nice watch. It works well, the price is very reasonable, The band is replaceable and durable, and the blacked out look is very nice. I love this watch.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 17, 2014
★★★★★ 5
Favorite daily use watch
Color: Blackout
Literally the best watch ever. Super durable. This is my second or third one. The Battery will last years at a time and doesn't take an expensive battery. The buttons are laid out intelligently and are intuitive to use. The strap will eventually break before the watch itself will. Though it has all the stop watch features, it's not too bulky. Also, it takes the time easily and keeps it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 19, 2025
recommand products
22397-C3 0.2500" (1/4) Cutter DIA x 0.1560" (5/32) Width x 0.3750" (3/8) Neck Length - Standard Slotting - 6 FL - AlTiN Coated
88.30
Crew Clothing Meridian Polo Shirt
25.00
Seasalt Postbox-friendly Box of 4 Women's Sailor Socks
16.50
HAAS Nylon Velox Ascent System
110.00
21799-C6 3 FL - 0.1250" (1/8) Cutter DIA x 1.2500" (1-1/4) LOC - AlTiN Nano Coated
124.60