Product Overview
Zoom-type beam expanders that continuously scale laser beam diameter from 1× to 4× while maintaining beam quality and alignment stability. Available for UV 355 nm, Green 532 nm, and NIR 1064 nm. Designed for precision laser processing and metrology where repeatable spot-size control is critical.
- Continuous variable magnification (1×–4×) zoom design
- High transmission >97% at design wavelengths
- Broad spectral coverage: UV, Green, NIR
Applications
- Semiconductor wafer processing and inspection
- Precision laser material processing (marking, drilling, cutting)
- Advanced research & development laser systems
Key Specifications
- Design wavelengths: 355 nm / 515-542 nm / 1030-1090 nm
- Materials: Optical glass, Fused Silica
- Magnification: 1×–4× (continuous). Max input beam Ø: 4.0 mm
- Beam pointing stability ≤0.5 mrad; residual tilt <1 mrad (tight alignment control)
- Lens diameter: 52 mm (compact module)
- Optics: Aspheric elements + AR coatings minimize reflection loss; robust for high-power lasers.
Options & Customization
- Custom AR coatings optimized for UV, Green, and NIR
- Mechanical interface options: threaded, flanged, or fixed mounts
- Environmental qualification on request (temperature, humidity, vibration, LIDT compliance)
Standard Models
| Model | GBF-UV-4.0-1.0-4.0 | GBF-GR-4.0-1.0-4.0 | GBF-NIR-4.0-1.0-4.0 | Notes |
|---|---|---|---|---|
| Input Beam Diameter | 4 mm | 4 mm | 4 mm |
• Variable 1×–4× • T > 97% |
| Zoom Range | 1× – 4× | 1× – 4× | 1× – 4× | |
| Lens Diameter | 52 mm | 52 mm | 52 mm |
Extended Models
Can be provided based on customer requirements
Beam Expander Selection Guide
GBF-UV-4.0-1.0-4.0 Specification
| Specification | Description | Specification | Description |
|---|---|---|---|
| Design Wavelength | 355 nm | Transmission | >97.0 % |
| Material | Fused Silica | Lens Diameter | 52.0 mm |
| Max. Input Beam Diameter | 4.0 mm | Lens Length | 124.9 mm (1×), 135.4 mm (4×) |
| Min. Magnification | 1.0× | Mount | M30×P1.0 thread or 50.0(0/−0.1) mm tube mount |
| Max. Magnification | 4.0× | Weight | 0.38 kg |
Dimensional Drawing – GBF-UV-4.0-1.0-4.0
- Dimensional drawings provided for all standard models
- Example shown: GBF-UV-4.0-1.0-4.0 (Length 124.9–135.4 mm, Ø52 mm lens diameter)
- Additional CAD data available upon request