| Features | Applications |
| Low power loss Good output collimation Able to withstand laser power of more than 1000 W Adjustable divergence angle of 18 to 32 mrad with the variable beam expanders | Precision laser machining: capable to provide a high power density focal spot. Laser range finder: capable to provide a highly collimated beam. Combining with a spatial filter, able to modify laser power distribution. |
| Specifications Part No. | Expansion ratio | Dimensions (mm) | |
| For model III & F | For model FN | ||
| BE-2x | 2X | Ø25*50.5 | |
| BE-3x | 3X | Ø42*84.8 | Ø42*87.8 |
| BE-4x | 4x | ||
| BE-5x | 5X | ||
| BE-8x | 8x | Ø56*147.8 | Ø56*150.8 |
| BE-10x | 10X | ||
| BE-15x | 15x | Ø56*192.8 | Ø56*195.8 |
| BES-01 | BES-02 |
| Dimensions: 75 (L) Ø50 (W) Ø101 (H) mm 3 | Dimensions: 75 (L) Ø50 (W) Ø119 (H) mm 3 |
| Part No. | Expansion ratio | Dimensions (mm) |
| BEW-2x | 2X | Ø29*51 |
| BEW-3x | 3X | Ø42*87.8 |
| BEW-5x | 5X | Ø45*123.8 |
| BEW-10x | 10X | Ø84*209 |
| Working wavelength | 355nm/532nm/1064 nm | Rate of adjustment | 2X-10X |
| element material | Uv fused quartz | Transmittance | Ø96% |
| Surface finish | 40/20 | Incident light aperture | 9.3 mm |
| Weight | Ø0.25 kg | Outgoing light aperture | 33.0 mm |
| Locking method | M3 rubber head screw | Diffraction limit: The maximum diameter of the incident beam | 2.2-6.0 mm @355nm Ø 3.0-8.0 mm @532nm Ø 3.0-8.0 mm @1064nm |
| Length of mechanical parts (2X) | 155.1 mm @355nm Ø 156.2 mm @532nm Ø 158.6 mm @1064nm | Mechanical part length (10X) | 150.5 mm @355nm Ø 150.1 mm @532nm Ø 153.5 mm @1064nm |
| Membrane layer damage threshold | 2.5 J/cm²;1.0MW/cm² @355nm Ø 5.0 J/cm²;2.5MW/cm² @532nm Ø 10 J/cm²;5MW/cm² @1064nm | System damage threshold | 0.25 J/cm²;0.1MW/cm² @355nm Ø 0.5 J/cm²;0.25MW/cm² @532nm Ø 1.0 J/cm²;0.5MW/cm² @1064nm |