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Description
70x70mm Replacement Optical Scanning Lens for 1064nm Fiber Laser Engraving Machines, M85x1 Thread (Only for 60w and Below)Download the Manual 70x70mm FIELD LENS: This powerful F theta lens from OMTech is ideal for laser marking, engraving, image transfer, material processing, and cutting systems; it creates vivid markings and flawlessly completes even your most complicated designs across its 2. 8x2. 8 inch work area HIGH TRANSMITTANCE: This field lens for 1064 nm lasers provides up to 99% throughput with negligible distortion thanks to its crystal clear and precision
- 70x70mm FIELD LENS: This powerful F-theta lens from OMTech is ideal for laser marking, engraving, image transfer, material processing, and cutting systems; it creates vivid markings and flawlessly completes even your most complicated designs across its 2.8x2.8 inch work area
- HIGH TRANSMITTANCE: This field lens for 1064 nm lasers provides up to 99% throughput with negligible distortion thanks to its crystal clear and precision engineered borosilicate crown glass construction
- SUPERIOR PERFORMANCE: Our F-theta scanning lens provides fast positioning and precision focusing so you'll be able to mark steel, aluminum, gold, and more with a consistently exact 10 micron spot size anywhere in the lens's 7x7 cm field
- LASTING DURABILITY: Our fiber laser lenses' double-sided multilayered coatings improve their natural optical properties while also strengthening them against scratches and damage during daily use, so you can keep cutting year after year
- EASY INSTALLATION: The standard M85x1 threading ensures easy installation, quickly replacing or upgrading the old lens in most laser marking machines on the market, including all those from OMTech
Engrave better and faster with this ultra-high transmittance fiber laser field lens from OMTech!
Whether you're replacing a worn scan lens or upgrading, this fiber laser lens offers extreme precision and peak optical performance across its entire 70x70mm work area to get all your stone, glass, and metal marking done right. Manufactured from premium borosilicate crown glass, this galvo scanner lens boasts strongly antireflective coatings on both sides to give you a light transmittance rate better than 99% at the 1064nm wavelength critical for CW, QCW, and Nd:YAG lasers. To ensure the longest possible service life, the coating on both sides of the lens also helps it resist scratches and other damage during daily use. The standard M85x1 threading lets you easily install this optical lens onto the galvanometer of most fiber etching machines, including all those from OMTech.
With OMT's brand-new F theta lens, your laser engraving, cutting, etching, and marking work has never been easier!
Specifications
- Material: K9 Glass, Plastic
- Scanning Area: 2.8x2.8 in. (70x70 mm)
- Operating Wavelength: 1064 nm (1.064 μm)
- Focal Length: 3.9 in. (100 mm)
- Entrance Beam Diameter: 0.4 in. (10 mm)
- Spot Size: 10 μm
- Working Distance: 4.5 in. (115.5 mm)
- Threading: M85x1
- Overall Dimensions: 2x3.5 in. (52x88 mm)
- Net Weight: 10.9 oz. (310g)
Package List
- 1 x Fθ Field Lens
- 1 x Instructions
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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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
4.1 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Simple and reliable
Color: Black/Digital/Green
I love the simplicity and reliability of this watch. It has only a handful of features, but they're all easy to figure out and use. The display is quite readable as well, under just about any conditions. This is an example of good design that doesn't try to do too much. What it does do, it does well. Good price too! These watches are durable and will last a long time. Battery changes are easy too.
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Reviewed in the United States on September 19, 2025
★★★★★ 5
Beautifully simple
Color: Black/Digital/Green
My son has worn a smaller version of this watch for a few years. After trying a different brand lately, which broke way too easily, I found this one on Amazon listed as "Used - Very Good" condition. I received what appeared to be simply an open box item, otherwise it looked brand new.
This watch fits me really well, and is not clumsy on my wrist, it does not get in the way of everyday motions. For me, it's just the right size. It is also pretty intuitive to use and set the alarms, etc. It has 3 alarms, each with a different sound. It can be worn in the shower without issue, I have not tried a swimming pool, though. It feels tough and durable, as my son's has proven to be. I'm very happy with this purchase.
*** Update: I spent considerable time in swimming pools recently while wearing the watch. It's still as good as when I opened it. Still 5 stars.
*** Update 2: a year-and-a-half of wearing, and it is performing really well! All the buttons and words on the watch are still in very good shape and easy to read. I wear this every single day. I don't put it through the wringer every day. But, I did spend a full week sailing and snorkeling last summer in salt water with hours each day in the water. It still looks and works the same as the day I bought it.
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Reviewed in the United States on July 12, 2022
★★★★★ 5
So simple
Color: Black/Digital/Green
Love it
So simple
I don’t even think about it
Ready to go every day
Band is very comfortable
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Good
Colour: Black/Silver-Tone
Like the look and functions
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Reviewed in Singapore on 12 January 2023
★★★★★ 5
Perfect for Training (Swimming) Purposes.... 5 Star for what it does as a training watch!
Color: Black/Yellow
This is already my 2nd TIMEX which I use for my swimming practices..
This one beats the older model (Timex 51931 Ironman Triathlon) with some interesting changes:
1) The larger digits on this model makes it easier to read the numbers (as some mentioned to do so when running) even when I am swimming, with a quick flick of the wrist at the turn, it's possible to see the minutes and the seconds.... The older model had smaller number, thus not making it possible to do this.
2) The navigation on this model became quite easier. It was already easy on the older model but this one included instructions on screen, such as NEXT, DONE, + or - in order to advance with your practices and training... Plus a chance to change the way you want to see the information of the your laps (Laps in the big digits and splits at the smaller one, or the oposite)
A Real nice add on by TIMEX.
3) A simple but effective wrist band "clip" (the tiny piece of strap that attachs the "extra" wrist band that is left after you put the clock on)
It has a piece of rubber on the inside that locks on at the wrist band and does not make it loose or even letting it go as some other watches do sometimes. This is more effective underwater I think, as it remains the way you set your wrist, as the older model I had did not quite held in place all the time.
4) Plenty of memory (100 laps is really a nice number), maybe more then most will need but, as a swimmer I use to count splits over 100m (or yards) with many laps during one training... It is quite usefull. I go easily on 10 to 15 laps of the memory in one training.
And with the date feature, that reminds when you did these times, it is quite usefull to keep track on the training with a spreadsheet, for instance... (as I do !)
5) A really big START/SPLIT buttom that is great to press when I am swimming laps and have to press myself at each turn at the pool.
Just perfect. Never a miss !
And the feature which was already at most of the models, of the repeat countdown, and the start of a chrono, or a repeat (what I use the most) in order race agains your average rhitym inside a certain time frame that you can set it up ! And of course the flix technology, which is very good to have it... Just flick your wrist (when you set it to ON) and it will show you at night all info that you need.
It is another great watch from TIMEX and it deserves a look, specially for the price. It is worth to pay a bit more if you are like me and uses a lot of the memory for the laps on swimming pool. Maybe for runners it can be quite a lot of memory, but the price difference is worth the change, for some of the options mentioned at this review.
This is a really good watch to have..
Will you definatelly like as we all are at these reviews.
:-) It deserves the 5 stars rating !
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Reviewed in the United States on January 10, 2009
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