SKU: 11542822039

Startnow 1064nm Laser Protective Lens | Fused Silica for Fiber Laser Cutting

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Description

Startnow 1064nm Laser Protective Lens | Fused Silica for Fiber Laser CuttingProtect your fiber laser cutting machine's optics with a high performance 1064nm laser protective lens made from fused silica. This replacement window is designed for use with Raytools, WSX, and Precitec laser cutting heads, ensuring your equipment stays clean and operational. This protective lens acts as a critical barrier against debris, spatter, and fumes generated during the cutting process. By absorbing and deflecting back reflections, it

Protect your fiber laser cutting machine's optics with a high-performance 1064nm laser protective lens made from fused silica. This replacement window is designed for use with Raytools, WSX, and Precitec laser cutting heads, ensuring your equipment stays clean and operational.

This protective lens acts as a critical barrier against debris, spatter, and fumes generated during the cutting process. By absorbing and deflecting back reflections, it prevents damage to the expensive internal optics of your laser cutting head. The result is consistent beam quality, fewer interruptions, and a longer lifespan for your machine's core components.

Engineered from high-purity fused silica (quartz), this lens offers excellent thermal stability and high transmittance at the 1064nm wavelength. Its plano (flat) design is simple to install and replace, making routine maintenance quick and straightforward. Whether you are cutting metal sheets or performing precision fabrication, this protective window helps maintain peak performance.

This lens is available in diameters from 18mm to 29mm to fit various laser cutting head models. It is a practical, cost-effective way to safeguard your investment and reduce downtime on the production floor.

Key Features and Benefits

- 1064nm wavelength optimized coating that delivers up to 99.5% transmittance for efficient laser power transmission

  • Fused silica (quartz) substrate that withstands high thermal loads and resists thermal shock during prolonged operation
  • Plano (flat) optical design that simplifies installation and ensures a secure fit inside the cutting head assembly
  • Compatible with Raytools, WSX, and Precitec fiber laser cutting heads for versatile use across different machine brands
  • Available in multiple diameter sizes (18mm to 29mm) to match your specific cutting head model

Who Is This For

- Fiber laser cutting machine operators who need a reliable replacement protective window for routine maintenance

  • Workshop technicians and maintenance teams servicing Raytools, WSX, or Precitec cutting heads
  • Fabrication shops running high-power 1064nm fiber lasers who want to extend the life of expensive internal optics
  • Anyone upgrading or stocking spare protective lenses for industrial metal cutting applications

Usage Scenario

A metal fabrication shop runs a 6kW fiber laser cutter daily to process stainless steel sheets. Over time, the original protective window accumulates spatter and residue, causing a drop in cut quality. The operator swaps in this 1064nm fused silica lens, and the beam transmission returns to full power. The cuts become clean again, and the internal focusing lens remains protected from debris. The replacement takes only a few minutes, minimizing downtime.

Micro Comparison

Unlike standard glass windows that can crack under high thermal stress, this fused silica lens offers superior heat resistance and clarity at 1064nm. Many generic windows lack the specific anti-reflective coating needed for fiber lasers, leading to power loss. This lens is purpose-built for fiber laser cutting heads, providing the transmittance and durability required for continuous industrial use.

Specifications

- Material: Fused Silica (Quartz)

  • Wavelength: 1064nm
  • Transmittance: 99.5%
  • Shape: Plano (Flat)
  • Diameter Options: 18mm, 19mm, 20mm, 25mm, 28mm, 29mm (select your size)
  • Compatible Heads: Raytools, WSX, Precitec fiber laser cutting heads

Size Guide

Please allow 1-3 cm / 0.4-1.2 in difference due to manual measurement. Confirm your cutting head model and required diameter before ordering. Common sizes include 28mm x 4mm thickness and 25mm x 3mm thickness.

Package Includes

- 1 x 1064nm Laser Protective Lens (diameter as selected)

Why You Will Love It

This lens gives you peace of mind that your laser cutter's internal optics are safe from damage. It is an affordable, easy-to-replace part that keeps your machine running at full capacity. With high transmittance and durable fused silica construction, it helps you avoid costly repairs and production delays.

Questions and Answers

Question: Will this lens fit my Raytools cutting head?

Answer: Yes, this lens is compatible with Raytools, WSX, and Precitec fiber laser cutting heads. Check the diameter options to match your specific model.

Question: What is the transmittance of this protective window?

Answer: The transmittance is 99.5% at the 1064nm wavelength, ensuring minimal power loss during cutting.

Question: Can I use this lens for a 2000W fiber laser?

Answer: Yes, this fused silica lens is suitable for high-power fiber lasers, including 2000W systems and above, thanks to its thermal stability.

Question: How do I know which diameter to order?

Answer: Measure the inner diameter of your cutting head's lens holder. This lens is available in sizes from 18mm to 29mm. Common sizes are 28mm and 25mm.

Question: Is this lens anti-reflective coated?

Answer: Yes, the lens has a specialized coating for 1064nm that provides 99.5% transmittance and reduces back reflections.

Question: Can this lens be cleaned and reused?

Answer: Yes, you can clean it gently with a lens tissue and approved optical cleaner. Replace it if the coating shows visible damage or heavy pitting.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 11542822039

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H
Verified Purchase
H
Pawtucket, US
★★★★★ 4
Cute but small
Size: Large, Color: Skinny Green
Cute stuffy and has not yet ripped. While my dogs plays with it, the toy is a bit small for him. For reference he is 120lbs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
J
Verified Purchase
Jenny J
Bozeman, US
★★★★★ 5
My Puppy Loves this Indestructible Dragon
Size: Large, Color: Pink, Size: Large, Color: Pink
My puppy (8 month old black lab mix) loves, loves, loves her dragon. She has had it for 2 months now. It is one of her favorites and gets daily rough play time. It's her go-to toy for fetch and tug games, as well as just general mouthy play. The squeaker gave out after about 4 weeks, but she would binge squeak for prolonged periods (kind of like chomping on gum) so it was almost a blessing when it went silent. She still chomps on it, but at least now I don't have to hear it. Other than the fact that it's a little grungy and bedraggled from so much loving, it is still in amazing shape. The seams and fur are all still intact. There are no visible holes, rips, or weak spots. I love Chew Guard Technology. This dragon replaced her goDog Iguana (from PetSmart) that developed a tear in the fur after about 4 months of heavy use. (It was superficial, just the outer fur layer and not the innards, but we disposed of it before she could eat more fur.) She can be pretty rough on her toys and I can never predict if any given toy will last minutes or months. The goDog stuffies definitely fall into the "months" category, even with rough daily use. Edit: The dragon lasted about 6 months of intensive, hard play before it developed a small tear in the fur. I patched it a couple times, but once my pup discovers a weak spot, it's the kiss of death for any stuffed item. We had to dispose of the dragon (so sad) to keep her from eating any more of the fur. We replaced the dragon with the goDog Chameleon, which is still going strong. I think we will go back to the dragon for our next toy because it's just so darned cute. We gave the dragon to my niece for her golden retriever puppy who is very chew-happy. That dragon is also doing well. You've just gotta love that chew-guard technology. This is one tough toy.
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Reviewed in the United States on September 26, 2015
M
Verified Purchase
Mother of two
Battle Creek, US
★★★★★ 5
Precious toy for big dogs too
Size: Large, Color: Skinny Green
Not only is this toy cute and fun, but material is thick and durable even for my crazy GSP who is a destruction artist. This is, the favorite toy his go to in the toy box.
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Reviewed in the United States on May 15, 2026
V
Verified Purchase
VanillaPepper
Louisville, US
★★★★★ 5
Indestructible Toys My Dobermans ❤️
Size: Large, Color: Mesh Green
Actually Respect! goDog Is a Lifesaver The variety of size and colors are phenomenal 😇 I have two Dobermans — serious, determined power chewers — and I’ve spent years trying to find toys that survive even a few days. I’ve tried the big brands (Kong, Goughnuts, Jolly Ball, you name it) — and while some toys last a little while, almost everything eventually ends up shredded, de-squeaked, or in pieces. goDog toys are the ONLY plush toys my Dobermans won’t destroy. We own multiple goDog toys now — dragons, dinosaurs, lizards — mostly in the large size (perfect for Dobermans), but even a few medium-sized ones hold up surprisingly well. Here’s what’s amazing: • They love them — actually carry them around, toss them, chew them gently, and squeak them happily. • They do not rip them apart — no matter how much tugging, chewing, or wrestling happens. • Large sizes are best for Dobermans (and other big breeds) — but even mediums survive for calmer play sessions. • No ripped seams, no stuffing everywhere, and no destroyed squeakers after months of use. What makes goDog toys different? The secret is their Chew Guard Technology — • A reinforced, high-strength inner mesh layer under the soft plush • Double-stitched seams • Durable yet flexible material that somehow resists punctures, tears, and brutal shaking The outside stays soft and fun, but the inside is built like armor. It’s NOT a super hard rubber or rough canvas — it still feels like a cuddle toy, but it’s engineered to survive serious chewing. Materials include: • Durable polyester plush • Chew Guard inner lining (high-tensile mesh fabric) • Reinforced stitching • Non-toxic squeakers • Safe for dogs to play with long-term Real Owner Advice: • Always size up if you have a heavy chewer — large sizes are a must for Dobermans or similarly strong breeds. • Medium sizes are fine if you supervise or your dog is more moderate with toys, but the large toys are built tougher overall. Final Thoughts: If you have big dogs, strong jaws, or just tired of wasting money on destroyed toys — goDog toys are a must. No other plush-style toy even comes close. My Dobermans will destroy almost anything… but they treat their goDog toys like treasured companions. No holes, no rips, just happy dogs. Follow me here on Amazon for more honest, dog-tested reviews! Like this review if it helped — I’ll be uploading even more proven tough toys and pet essentials soon!
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Reviewed in the United States on April 29, 2025
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Verified Purchase
BB
Lake Worth, US
★★★★★ 4
Surface Fabric is very durable
Size: Small, Color: Hot Pink
Surface Fabric is very durable, but the squeaker didn't last two months. I have urged the manufacturer to find a strong more durable squeaker for their product. My dogs really enoys it when the speaker works. One of his 3 work. I have just bought two more he likes them so much. He takes it to bed every night to catch it once or twice before sleeping. Also loves to catch it a few times during the day.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026

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