Multi-focus objectives of patented design, with protective window
Applications:


| Description | Objective lens with multiple foci, with replaceable protective window | |
| Accessories | - Protective Window D12_1064, D12_515/1030 - Adapter (spacer) C-Mount Ext/Int 6 mm |
|
| Number of foci | 4, 2, 1 | |
| Focal length, mm | 8.1 | |
| Input beam full diameter, mm | 12.9 | |
| Numerical aperture (NA) | 0.8 | |
| Angular field of view | ± 1° | |
| ΔF, μm | air | 2 foci: 15, 47 4 foci: 16-15-16 |
| Glass (x1.5) | 2 foci: 24, 72 4 foci: 24-24-24 |
|
| Al2O3 (x1.76) | 2 foci: 28, 86 4 foci: 29-28-29 |
|
| Spectral band, nm | _1064: 1020 - 1100 _532: 510 - 550 other wavelengths on request |
|
| Waist in air 2ω, μm, by TEM00 beam of Ø 9 mm (1/e²) |
1064 nm | 1.22 |
| 532 nm | 0.61 | |
| Working Distance, mm | - Objective only: 1.1 - Objective + Protective Window: 1.0 |
|
| Recommended maximum pulse energy | 25 mJ at 5 ns | |
| Diameter, mm | 39 | |
| Length, mm | - 39.6 - 40.4 - 45.8 - 46.6 with Adapter (spacer) |
|
| Mounting | C-Mount (1” -32 UN 2A) | |
|
* ΔF in material is n times larger than in air, where n is refractive index of the material: * The foXXus objectives create 1, 2 or 4 foci along the optical axis * Compensation of spherical aberration induced by focusing inside bulk material * The crack inside material is typically longer than ΔF defined by optical design |
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