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Description
Precitec Original Collimating & Focusing LensesPrecitec Original Collimating & Focusing Lenses (D30 D37) Original Precitec optical lenses for fiber laser cutting heads. Select your Diameter (D30 or D37), Focal Length (F100F300) and Spec (Collimating Focusing Aspheric + power rating). Built for 1 m Yb fiber lasers and high power industrial cutting. Compatibility: Precitec laser heads (verify D30 D37 and focal length before ordering). Types: Collimating (beam collimation) & Focusing (spot
Precitec Original Collimating & Focusing Lenses (D30/D37)
Original Precitec optical lenses for fiber-laser cutting heads. Select your Diameter (D30 or D37), Focal Length (F100–F300) and Spec (Collimating / Focusing / Aspheric + power rating). Built for 1 µm Yb-fiber lasers and high-power industrial cutting.
- Compatibility: Precitec laser heads (verify D30/D37 and focal length before ordering).
- Types: Collimating (beam collimation) & Focusing (spot formation); aspheric options for high-power heads.
- Power ratings: 4–30 kW (see variant list).
- Optics: Laser-grade fused-silica substrates with high-damage-threshold AR coating for 1030–1090 nm.
- Weight: 0.2 kg per item. Tax-exempt on this store.
- Packing: Each lens is individually protected and sealed for safe transport.
How to choose the right lens
- Confirm diameter on your head label or existing lens: D30 or D37 (must match mechanically).
-
Identify function:
- Collimating lens (near the fiber input) converts the diverging beam to a parallel beam.
- Focusing lens (above the nozzle) concentrates the parallel beam into the cutting spot.
- Pick focal length by process needs (shorter F → smaller spot & shallower depth; longer F → larger process window & more standoff).
- Match power level: for ≥15 kW, choose aspheric options where noted to reduce aberrations and thermal load.
Tip: Not sure? Send us a photo of your laser-head label and your current lens markings. We’ll confirm compatibility before you buy.
Variant matrix (quick reference)
| Diameter | Focal Length | Type | Aspheric | Power rating |
|---|---|---|---|---|
| D30 | F100 | Collimating | No | 4 kW |
| D30 | F125 | Focusing | No | 4 kW |
| D30 | F150 | Focusing | No | 4 kW |
| D30 | F200 | Focusing | No | 4 kW |
| D37 | F100 | Collimating | No | 6 kW |
| D37 | F150 | Focusing | No | 6 kW |
| D37 | F200 | Focusing | No | 6 kW |
| D37 | F100 | Collimating | No | 8 kW |
| D37 | F150 | Focusing | No | 8 kW |
| D37 | F200 | Focusing | No | 8 kW |
| D37 | F100 | Collimating | No | 12 kW |
| D37 | F150 | Focusing | No | 12 kW |
| D37 | F200 | Focusing | No | 12 kW |
| D37 | F100 | Collimating | Aspheric | 15 kW |
| D37 | F150 | Focusing | No | 15 kW |
| D37 | F200 | Focusing | No | 15 kW |
| D37 | F100 | Collimating | Aspheric | 20 kW |
| D37 | F150 | Focusing | No | 20 kW |
| D37 | F200 | Focusing | No | 20 kW |
| D37 | F250 | Focusing | No | 20 kW |
| D37 | F100 | Collimating | Aspheric | 30 kW |
| D37 | F150 | Focusing | No | 30 kW |
| D37 | F200 | Focusing | No | 30 kW |
| D37 | F250 | Focusing | No | 30 kW |
| D37 | F300 | Focusing | Aspheric | 30 kW |
Technical information
| Design wavelength | 1030–1090 nm (Yb-fiber lasers) |
| Optical material | Fused silica (low absorption, high thermal stability) |
| Coating | High-power AR coating (low reflectance, high damage threshold) |
| Available diameters | D30, D37 (must match your laser head) |
| Available focal lengths | F100, F125, F150, F200, F250, F300 |
| Weight | 0.2 kg per item |
| Function | Collimating (fiber output → parallel beam) / Focusing (parallel beam → cutting spot) |
| Recommendation | Use aspheric versions on high-power heads to reduce aberration and maintain spot quality |
Installation & maintenance
- Environment: Work in a clean, enclosed, dust-free area. Wear powder-free nitrile gloves and a mask.
- Check parts: Verify diameter and F value; inspect O-rings, spacers, and seats for residues.
- Orientation: Keep coated surfaces clean; follow manufacturer orientation marks if present.
- Mounting: Place gently into the holder; tighten the retaining ring to the manufacturer’s torque (do not overtighten).
- Alignment: After collimator replacement, check beam collimation and nozzle centering.
Cleaning guideline
- Blow off loose particles with filtered, oil-free air from center to edge.
- Single drag-wipe with lint-free lens tissue lightly wetted with 99.9% IPA; avoid circular scrubbing.
- Do not touch the surface; never reuse tissues; air-dry in a clean environment.
Warning: A fingerprint or metallic dust can permanently damage coatings at high power. Always inspect the protective window after any lens service.
FAQ
Q1. Do I need an aspheric lens?
For heads ≥15 kW, an aspheric collimating lens (and for 30 kW also the F300 focusing lens) helps maintain beam quality and stability.
Q2. Can I switch between D30 and D37?
No. The diameter must match the head design. Always follow the label or the size of your existing optics.
Q3. Can I combine F100 collimation with F150 focusing?
Yes—collimating and focusing focal lengths are chosen together to achieve the target spot size and standoff; use the same combination as your OEM setup unless process changes are intended.
Q4. What else should be checked or replaced?
Protective window, nozzle, and ceramic ring. A contaminated window can quickly damage a new focusing lens.
Recommended accessories
- Protective windows (QBH sizes matching your head)
- Nozzles (single/double layer, conical/straight)
- Ceramic rings & sensor cables
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
4.6 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 4
Thick Silicone Moisturizing Socks
Color: Nude, Size: Women 9-13, Color: Nude, Size: Women 9-13
★★★★☆ Thick Silicone Moisturizing Socks
I ordered these silicone moisturizing socks to try for dry heels. Unlike typical fabric spa socks, these are made entirely of soft silicone and are noticeably thicker and very stretchy.
When I first took them out of the package there was a visible fold line in the silicone. It appears to be from how they were folded in the packaging rather than a defect in the material. The silicone itself feels durable and flexible.
The design works like a full silicone sleeve that traps moisturizer against your skin. I applied Aquaphor first and then slid these on so the moisture stays in contact with the skin longer. One thing I noticed right away is that the silicone feels cool when you first put them on, which is actually pretty comfortable.
The bottoms have a zig-zag textured pattern that gives some grip if you need to stand briefly, though these seem better for relaxing while moisturizer absorbs rather than walking around much.
The ankle opening is the tightest part of the sock. It stretches, but it’s noticeably snug compared to the rest of the silicone, which helps keep them from sliding off.
For sizing reference, I wear a women’s 7.5–8 shoe and the size Large fits comfortably. There’s plenty of stretch and I can wiggle my toes easily, so they should accommodate larger feet as well.
They’re also easy to clean. After using them you can simply wash them with soap and water and let them dry completely before storing or using them again.
Overall these appear well made with thick silicone and plenty of stretch. If you use moisturizing socks or heel treatments, these work well for keeping lotion in place while your feet absorb it.
Since this set comes with two pairs for about $10, the price seems pretty reasonable for something reusable like this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 6, 2026
★★★★★ 5
HEALTH & BEAUTY
Flavor Name: XL silicone socks 2 pairs
LOVE IT
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
★★★★★ 3
Stains easily. Tight for men's size 11 feet
Flavor Name: XL silicone socks 2 pairs, Flavor Name: XL silicone socks 2 pairs
Husband wore dark cotton socks over these gel foot covers overnight and the covers picked up color from the socks. Tried hand washing, even dabbing with a bleach soaked paper towel, but the stains remained. The covers are a bit tight for men's size 11. Edit: After a few more hand washings the stains began to fade. However one tore around the leg opening when taking it off.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 10, 2024
★★★★★ 1
Worthless. Tore on first use.
Flavor Name: XL silicone socks 2 pairs
The first time I put these on my feet, the whole toe broke right through. They were a proper fit and my feet are well pedicured. Just very poor quality. I don’t recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 2, 2024
★★★★★ 5
Best fit!
Flavor Name: XL silicone socks 2 pairs
Search no further, these are the BEST! They are smazing at conforming to the shape of your feet. They fit snuggly with no sags/bags or uncomfortable pressure or squeezing of your toes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2025
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