Common for foXXus objectives for multi-kW lasers | 
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| Description | - Objective lens with multiple foci - Applied as a Focusing Lens or as a Collimator  | 
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| Clear Aperture | 48 mm | ||
| Angular field of view | ± 1° | ||
| Recommended maximum power | 6 kW | ||
| Mounting | - Threads M58x1 at entrance and exit - Adaptor with QB fiber connector mount  | 
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| Water cooling | through 6-1/8 fittings | ||
| Diameter | 90 mm | ||
| Length | 75 mm | ||
Features of foXXus optics | 
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| Model | _3.5-11.1 F200_NIR | _3.5-11.1 F200_1064 | _5.4-17.4 F250_1064 | 
| Spectral band, nm | 920-1100 | 1020-1100 | 1020-1100 | 
| ΔF in air, mm | 2 foci: 3.5 or 11.1 4 foci: 3.8-3.5-3.8  | 
2 foci: 5.4 or 17.4 4 foci: 5.7-5.4-6.3  | 
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| Focal length, mm | ~202 (197-208.5) | ~252 (243.5-261.6) | |
| Working Distance, mm | 158.5 - 169.6 | 205.1 - 222.5 | |



