Product Overview
F-Theta lenses are laser scanning optics that focus beams onto a flat field with minimal distortion. Maintaining a linear relationship between scan angle and focal position, they deliver high-precision, distortion-free imaging. Ideal for marking, engraving, cutting, welding, and micromachining where uniform spot size and stable energy are essential.
Why Our F-Theta Lenses?
- Flat-Field Imaging: Maintains uniform focus across the entire scan area
- High Accuracy: Ensures distortion-free spot positioning
- Versatile Applications: Suitable for marking, drilling, cutting, and microfabrication
- Durability: Designed for high-power laser environments with robust coating options
Key Specifications
- Supported Wavelengths: UV, Visible, NIR (e.g., 355 nm, 532 nm, 1064 nm)
- Scan Field Size: Customizable upon request
- Spot Size: Stable and consistent across full field
- Focal Length Options: Wide range available (e.g., 100 mm – 500 mm)
- Material Options: Fused Silica, Optical Glass
- Coating Options: AR, HR, Broadband, Laser Line
Customization / Options
- Extended scan fields and focal lengths available upon request
- Wavelength-optimized AR coatings
- Compatible with high-power laser systems
- Mounting configurations adapted for different galvo scanners
- Non-standard dimensions available (additional cost)
Applications
- PCB Marking & Engraving
- OLED & Display Panel Processing
- Precision Welding & Cutting
- Semiconductor Micromachining
Window Housing Types
| Type | T1 | T2 | T3 |
|---|---|---|---|
| Features |
• Minimized product size • No need retainer wrench • Do not turn the window housing over, as the window can fall freely |
• The most popular type • Improved safety by mounted window to the window housing |
• Easy separation of window housing using bolts • Bigger product size |
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F-Theta Lens Selection Guide
Optional Product
| Item | Description (optional to include) |
|---|---|
| Protective Window | Protects lens surface from contamination and debris |
| Beam Expander | Adjusts beam size for optimal focusing and application flexibility |
| Vision Camera & Telecentric Lens | Enables precision alignment and inspection |
| Illumination for Vision | Provides lighting support for vision-based inspection systems |
GFS-ST-UV-135-75 Specification
| Specification | Description | Specification | Description |
|---|---|---|---|
| Design Wavelength | 355 nm | Telecentricity | <1.6° |
| Effective Focal Length | 135.0 mm | Flange-Focus | 280.14 mm |
| Max. Input Beam Diameter | 10 mm | Lens Diameter | 148.00 mm |
| Focus Size Diameter | 8.8 µm | Lens Length | 111.14 mm |
| Diagonal Scan Angle | ±24.0° | Mount | M85×1.0 |
| Scan Field | 75 mm × 75 mm | Window | Mounted (W2-PW-133.0-3.0-UV-355-0) |
| A1 (1st mirror to 2nd mirror distance) | 12.56 mm | LIDT* | 7.5 J/cm2, 20ns, 20Hz at 355 nm |
| A2 (2nd to Flange) | ±5.0% | Weight | T2: 2.4 kg |
| Working Distance | 187.20 mm | Zemax Blackbox file is available |
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* Laser Induced Damage Threshold