Marking Lens 300x300
High-precision optical F-Theta telecentric scanning lens engineered for 1064nm pulsed fiber laser marking systems. Delivers an expansive 300 x 300 mm active marking field, diffraction-limited focal spot, multi-layer ultra-low absorption antireflection coating (>99.5% transmittance), and standard M85x1 mechanical mounting thread.
- check_circle Wide 300 x 300 mm Marking Envelope: Dramatically expands working capacity for large plates and multi-item fixture arrays.
- check_circle Optimized for 1064nm Fiber Lasers: Matches emission spectra of pulsed fiber, MOPA, diode-pumped, and Nd:YAG laser markers.
- check_circle > 99.5% Optical Transmittance: Multi-layer dielectric anti-reflective coating maximizes delivered laser power with zero loss.
- check_circle Flat-Field Distortion Correction: True F-Theta optical geometry maintains identical spot circularity from center to edges.
- check_circle Standard M85 x 1 Metric Thread: Direct screw-in replacement for Sino-Galvo, Max, Century Sunny, and Scanlab heads.
- check_circle High Laser Damage Threshold (>10 J/cm²): Resists thermal blooming, internal stress, and coating deterioration up to 100W.
- check_circle Industrial Shockproof Packaging: Safely packed in high-density molded foam casing with optical protective dust caps.
Target Applications & Use Cases
Industrial Applications FitEngraving large electrical panel faceplates, stainless steel machine nameplates, and measuring scale rulers up to 300x300 mm.
Marking full matrix trays of surgical screws, USB flash drive housings, keychains, and tags in a single automated laser pass.
Deep metal coin mold engraving, hallmark embossing dies, and firearm engraving on tool steel, brass, and titanium.
Marking high-contrast alphanumeric tracking serials, heat numbers, and API monogram specifications across large pipe flanges.
High-speed surface marking of aluminum extrusion heat sinks, cast amplifier housings, and consumer electronics.
Engineering & Production Benefits
Key Operational AdvantagesExpands marking field from 110x110 mm to 300x300 mm, slashing material handling time and eliminating multi-step indexing.
F-Theta geometry ensures that cut depth, mark contrast, and line width are completely identical at the extreme corners as in the center.
High-damage threshold fused silica elements resist thermal expansion, preventing focal plane drift during all-day 50W production.
Standard M85 thread allows immediate field swaps; simply update the focal length and field size in EzCad software to begin marking.
Spare Part Overview & Technical Description
Precision Optical F-Theta Laser Scanning Objective Lens (300 x 300 mm / 1064nm)
The F-Theta 300x300 Laser Marking Lens is a precision multi-element optical objective engineered for 1064nm industrial pulsed fiber and Nd:YAG laser marking systems. Designed to convert angular galvanometer mirror deflection into a perfectly flat, distortion-free scanning plane, this optical objective maintains a constant mathematical linear relationship between deflection angle and focal displacement (y = f × θ). This eliminates barrel distortion, field curvature, and peripheral spot enlargement, ensuring uniform laser fluence and pinpoint kerf definition across an expansive 300 x 300 mm (11.8 x 11.8 in) working area.
Constructed from optical crown glass with high internal homogeneity, each optical element is treated on both surfaces with multi-layer dielectric anti-reflective (AR) coatings, achieving exceptional light transmittance exceeding 99.5% at the 1064nm fundamental wavelength. The lens features an industry-standard M85 × 1 mm male mounting thread, allowing direct, thread-in replacement on all standard fiber laser marking heads (including Sino-Galvo, Century Sunny, Max, and Scanlab). With a high laser damage threshold exceeding 10 J/cm², this objective resists thermal blooming, spot distortion, and coating degradation during continuous high-power 50W and 100W laser marking shifts.
Advanced Optical, Coating & Mechanical Highlights:
- Expansive 300 x 300 mm Active Marking Field: Allows large-format batch marking of multi-part trays, wide stainless nameplates, and large industrial components in a single laser pass without mechanical repositioning.
- F-Theta Linear Distortion Compensation: Optical design ensures flat-field focal consistency across the entire 424 mm diagonal envelope, preventing power drop-off or out-of-focus blurring at outer edges.
- Double-Sided Ultra-Low Absorption AR Coatings: Delivers exceptional transmission (>99.5%), preventing internal heat build-up and preserving maximum laser wattage at the target material surface.
- Diffraction-Limited Focused Spot Diameter: Concentrates laser energy into a microscopic focal spot (approx. 40–50 µm), producing crisp high-density DataMatrix codes, micro-text, and deep metal engraving.
- Universal M85 x 1 Metric Thread Mount: Standardized industrial mechanical interface allows rapid, tool-less screw-in mounting directly to standard galvanometer scan head housings.
- Robust Anodized Aluminum Enclosure: Heavy-duty optical housing protects interior lens elements against workshop dust, oil mist, and ambient thermal expansion.
Full Specifications Sheet
| Specification | Parameter / Value |
|---|---|
| Product Name / Optics | Laser Marking F-Theta Scan Lens 300x300 |
| Optical Technology | F-Theta Flat-Field Scanning Objective Lens |
| Supported Laser Type | Pulsed Fiber Laser, CW Fiber, MOPA, Nd:YAG Laser |
| Operating Wavelength (λ) | 1064 nm (Near Infrared Optical Band) |
| Minimum Order Quantity | 1 Piece |
| Active Marking Field Area | 300 x 300 mm (11.8 x 11.8 Inches) |
| Diagonal Scan Envelope | 424 mm Diagonal Working Circle |
| Effective Focal Length (EFL) | F = 420 mm (Nominal F420 / F430) |
| Working Working Distance (WD) | Approx. 465 mm (Lens Lower Edge to Target Surface) |
| Theoretical Focused Spot Size | Approx. 45 – 55 µm (With 10 mm Input Beam) |
| Optical Transmittance | ≥ 99.5% at 1064 nm (Double-Sided AR Coating) |
| Antireflective Coating Type | Broadband Dielectric Hard AR Coating |
| Laser Damage Threshold | > 10 J/cm² (1064nm, 10ns, 100W Average Power) |
| F-Theta Linearity Distortion | < 0.5% Across Entire 300x300 mm Field |
| Mounting Interface Thread | Standard M85 x 1.0 mm Male Metric Thread |
| Housing Barrel Diameter | Ø 110 mm Outer Aluminum Flange |
| Housing Material & Finish | Precision CNC Aluminum with Black Anodized Finish |
| Incident Beam Entrance Aperture | Optimized for 10 mm – 14 mm Galvo Mirrors |
| Compatible Scan Heads | Sino-Galvo, Max, Century Sunny, JCZ, Scanlab Galvos |
| Compatible Marking Softwares | EZCAD2, EZCAD3, MarkOS, LaserCAD, LightBurn |
| Packaging Specifications | Heavy-Duty Shockproof Box with Custom EVA Foam Liner |
| Included Lens Accessories | Protective Optical Endcaps (Top & Bottom Thread Caps) |
Customer Reviews & Operational Ratings
Genuine evaluations from manufacturing plants, fabrication units, and machine operators across India.
Based on 0 verified client reviews.
No Reviews Yet
Be the first industrial buyer to review this machine or spare part. Your operational feedback assists manufacturing engineers nationwide.