Laser Focusing & Collimation Lens For Raytool, WSX, Ospri, BOCI
Laser focusing lens and collimation lens are the two core optics inside every fiber laser cutting head. The collimating lens converts the diverging beam coming out of the fiber into a straight, parallel beam, and the focusing lens then concentrates that beam into a fine, high-energy spot at the nozzle. SparesZone supplies high-precision, fused-silica focus & collimation lenses for fiber laser cutting machines across India - compatible with Raytools, Precitec, WSX, Bodor and other leading laser systems.
Every lens in our range is made from high-grade fused silica (synthetic quartz) with an anti-reflective coating tuned to the 1064-1080-nm fiber laser wavelength. That combination means lower absorption, cooler operation and a higher damage threshold, so the optic holds its beam quality through long, continuous high-power cutting runs. Whether you need a laser diode collimating lens, an aspheric collimating lens or a Raytools-compatible collimation lens, you get industrial-grade optics built specifically for CNC and fiber laser systems.
We stock both collimating and focusing lenses in a range of focal lengths and diameters to suit different cutting heads and power levels - backed by responsive fitment support, bulk pricing for OEM and fabrication buyers, and fast pan-India delivery.
Collimating Lens vs Focusing Lens: What’s the Difference?
In a fiber laser head the beam passes through the collimating lens first, then the focusing lens. The collimating lens straightens the diverging beam into parallel rays; the focusing lens bends those parallel rays down to a single concentrated point on the workpiece. Both are needed, both are consumable, and choosing the right focal-length pairing for each is what controls your spot size, cut speed and edge quality.
A useful rule of thumb: the focused spot diameter is roughly (focusing focal length ÷ collimating focal length) × fiber core diameter. A longer collimating focal length or a shorter focusing focal length gives a smaller, more intense spot for thin sheet and fine detail, while a longer focusing focal length suits thicker plate and bevel cutting. The table below summarises how the two optics differ.
| Parameter | Collimating Lens | Focusing Lens | What It Affects |
|---|---|---|---|
| Primary function | Turns the diverging fiber output into a parallel beam | Concentrates the parallel beam into a fine cutting spot | Beam delivery & spot formation |
| Position in the head | Near the fiber / QBH connector (beam entry) | Near the nozzle (beam exit) | Optical path order |
| Typical focal length | 50-150 mm | 100-250 mm | Spot size & cutting range |
| Effect on the cut | Sets beam diameter & divergence entering the focus lens | Sets focus spot size, depth of focus & precision | Edge quality, speed & kerf width |
Key Features of Our Focus & Collimation Lens
- Fused-silica (quartz) substrate for low absorption at 1064-1080 nm
- AR coatings tuned to the fiber laser wavelength for high transmission
- High laser-induced damage threshold for sustained high-power cutting
- Aspheric and spherical collimating options for precise beam control
- Fits Raytools, Precitec, WSX, Bodor and other major cutting heads
- Multiple focal lengths to match your power level and material
- Each lens QC-checked for surface quality, coating and clarity
- Suitable for high-power CNC fiber laser cutting, welding and marking
Applications & Industries
- Sheet Metal Fabrication
- Automotive Manufacturing
- Aerospace Components
- Industrial Machinery & Job-Work Shops
- Electronics & Precision Engineering
- CNC Laser Cutting, Welding & Marking Services
How to Choose the Right Focus & Collimation Lens
- Match your cutting head model first. Confirm the lens fits your exact head (e.g. Raytools BT240/BM109/BM111, Precitec ProCutter, WSX) - diameter and assembly format must be correct.
- Pick the focal length for your work. Shorter focusing focal lengths give a smaller spot for thin sheet and fine detail; longer focal lengths suit thick plate and bevel cuts.
- Check the power rating. Use optics rated for your source - 1-kW behaves very differently from 6-kW, 12-kW or 20-kW+ in heat load.
- Confirm the coating wavelength. For fiber lasers the AR coating must be optimised for ~1070-nm; the wrong coating wastes power as heat.
- Buy collimating and focusing lenses as a matched set. Their focal-length ratio sets your final spot size, so plan them together.
- Choose a supplier with stock and support. Lenses are consumables - reliable availability and replacement advice keep your machine running.
Benefits for Your Operation
Performance
Stable beam quality, a clean focused spot and consistent power delivery - so you get sharper edges, faster feed rates, tighter kerf and fewer re-cuts across mild steel, stainless and aluminium.
Cost & Uptime
High damage-threshold optics last longer between changes, reducing downtime and consumable spend. Bulk pricing and fast India-wide dispatch keep your fabrication or OEM line moving.
Why Buy Your Lenses from SparesZone
- Specialist focus on fiber laser optics and cutting-head spares
- Every lens inspected for surface, coating and clarity before dispatch
- Genuine and compatible options - clearly stated, no guesswork
- Expert help choosing the right focal length and head fitment
- Bulk & OEM pricing with proper GST invoicing for businesses
- Fast, tracked dispatch to all major industrial hubs across India
- Wide compatibility across Raytools, Precitec, WSX and more
- Consistent quality standards you can re-order with confidence
Frequently Asked Questions
A laser focusing lens concentrates the collimated beam into a fine, high-energy spot on the workpiece. Its focal length sets the spot size and depth of focus, which directly control cut quality, kerf width and the material thickness you can cut cleanly.
The collimating lens straightens the diverging beam from the fiber into parallel rays; the focusing lens then bends those rays down to a single concentrated point on the material. The beam passes through the collimating lens first and the focusing lens second, and together their focal lengths set your spot size and cut quality.
It depends on your material thickness. For thin sheet (about 1 to 4 mm) a 100 mm or 125 mm focusing lens gives a smaller spot and finer detail; for thicker plate (6 mm and above) a 150 mm or 200 mm lens with a matched collimating lens works better. Always use the focal lengths your cutting head was designed for.
For best results, treat them as a matched pair. The ratio of their focal lengths sets your final spot size, so a mismatched pair can reduce beam quality and cutting performance even when each lens is individually fine.
They are consumables in high-power cutting. With clean assist gas and an intact protective window a focusing lens lasts a long time, but lifespan drops sharply if the protective window fails and spatter or fumes reach it. Replace a lens when you see burns, coating damage or hazing, or when cut quality, piercing stability or power noticeably drop.
Yes. SparesZone supplies focus and collimation lenses compatible with RayTools, Precitec, WSX, OSPRI, BOCI and other common fiber laser heads. Share your head model and power rating and we will confirm the correct lens, diameter and focal length for your machine.
Laser focusing lens price in India depends on the focal length, diameter, coating and head compatibility. At SparesZone, focusing lenses start from around ₹295 with GST invoice, and bulk or matched-pair pricing is available for fabrication shops and OEMs. Send your specification for a current quote.
SparesZone, based in Ahmedabad, Gujarat, supplies matched focus and collimation lens pairs for all major fiber laser cutting heads, with GST invoicing and fast pan-India delivery (typically 1-3 days). Contact us or message +91 92740 95891 with your machine model for stock and pricing.
Related Categories
Get the Best Deals on Focus & Collimation Lens
Looking for a reliable industrial laser collimator and focusing lens supplier in India? Get bulk pricing, expert fitment support and fast delivery to every state. Send us your machine model and specification today for a customised quote.
Request Quote