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International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/Sea Freight / Air Freight / International Special Line
Model
4401-288-000-20 (F=254)
Payment Terms
L/C,D/A,D/P,T/T
Freight Charge
For Industrial Equipment (E.G., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/Volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote
International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/Sea Freight / Air Freight / International Special Line
Model
4401-288-000-20 (F=254)
Payment Terms
L/C,D/A,D/P,T/T
Freight Charge
For Industrial Equipment (E.G., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/Volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote
LINOS F-Theta-Ronar Field Lens F=254mm 157x157mm 1064nm Fiber Laser Marking
This F-Theta-Ronar series field lens from LINOS, Germany features a 254 mm focal length and 157 * 157 mm scanning field. Designed for fiber laser and Nd:YAG laser marking and engraving systems, this large-format all-round model delivers wide-field, low-distortion, high-uniformity scanning focus. The F=254 mm configuration is ideal for large-area marking applications including nameplates, full-sheet marking, and large workpieces. As a genuine German import with full traceability, it mounts directly to mainstream galvo scanners to form a complete scanning optical path.
Product Highlights
Genuine German LINOS: Century-old optics brand from Goettingen, now part of Qioptiq/Excelitas Technologies
Large Coverage: 254 mm focal length with 157 * 157 mm scanning field for marking bigger workpieces in one pass
Low Distortion, High Uniformity: Field-wide focus consistency with no edge drift and even line quality
1064 nm Optimized Coatings: Matched to mainstream fiber lasers and Nd:YAG lasers
Durable Build: Anodized aluminum housing for continuous workshop use
Easy Integration: Standard mount, direct replacement for mainstream galvo marking systems
Technical Specifications
Parameter
Specification
Brand
LINOS (Germany, Qioptiq/Excelitas Technologies)
Series
F-Theta-Ronar
Product Type
F-Theta Field Lens (Laser Scanning Focusing Lens)
Model
4401-288-000-20 (F=254 specification)
Focal Length f
254 mm
Scanning Field
157 * 157 mm
Wavelength Range
1064 nm (typical, per official datasheet)
Lens Construction
Multi-element optical glass
Housing Material
Anodized aluminum (black barrel)
Mount
Standard thread / flange
Origin
Germany
Available Models
Model
Focal Length
Scanning Field
Type
4401-302-000-21
F=100
62 * 62 mm
Standard
4401-509-000-21
F=100
46 * 46 mm
Standard
4401-301-000-21
F=160
99 * 99 mm
Standard
4401-261-000-21
F=163
115 * 115 mm
Standard
4401-589-000-26
F=163
66 * 66 mm
Standard
4401-288-000-20
F=254
157 * 157 mm
Standard (featured)
4401-360-000-21
F=330
217 * 217 mm
Standard
4401-350-000-21
F=420
291 * 291 mm
Standard
4401-464-000-21
Telecentric F=100
54 * 54 mm
Telecentric
4401-561-000-26
Telecentric F=100
43 * 43 mm
Telecentric
4401-513-000-26
Telecentric F=167
84 * 84 mm
Telecentric
4401-289-000-20
F=250
154 * 154 mm
532 nm
4401-499-000-26
Fused Silica F=255
170 * 170 mm
Fused Silica
4401-546-000-26
Fused Silica F=340
205 * 205 mm
Fused Silica
4401-508-000-26
Fused Silica F=420
254 * 254 mm
Fused Silica
Application Areas
Large-Format Laser Marking: Metal/non-metal identification, nameplates, serial numbers
Traceability Marking: QR codes, barcodes, anti-counterfeit codes in volume
Laser Engraving: Molds, crafts, wood and leather on large surfaces
Full-Sheet Marking: Large-area plate marking and cutting positioning
Automotive / 3C Marking: Auto parts and electronic components
Welding Focus: Large-field beam focusing in galvo welding systems
Frequently Asked Questions
Q: What scanning field does F=254 mm cover?
A: Typical 157 * 157 mm — ideal for large-format marking; confirm with the official datasheet.
Q: Which lasers and scanners does it pair with?
A: Suits 1064 nm fiber lasers and Nd:YAG lasers, and mainstream scanners such as SCANLAB basiCube / intelliSCAN.
Q: Standard F=254 vs Fused Silica F=255 (170 *170)?
A: Field sizes are close; fused silica optics handle higher power and thermal stability better, at a higher price. Choose the standard version for routine marking.
Q: Which models are available in this series?
A: 15 models from F=100 to F=420, including standard, telecentric, 532 nm and fused silica versions — see the model table above.
Q: How long do the coatings last?
A: With normal use and cleaning, coating life matches the machine; avoid contamination and direct laser damage.
Q: Warranty and lead time?
A: Genuine import with warranty per contract; technical support and lens inspection services available. Typical lead time 1-2 weeks; bulk orders can be pre-stocked.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Ecer Certification：
Verified Supplier
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