Focusing Lens S6ASS2020-292
Focusing lenses using multiple elements in an air-spaced configuration minimize the imaging errors of a single lens in non-scanning laser optical systems and provide high-precision focusing. Monochromatic and achromatic systems must be distinguished. Monochromatic systems correct aberrations only at a specific wavelength and are therefore particularly suitable for laser applications. Air-spaced configurations using fused-silica lenses are especially suitable for collimating or focusing high-power lasers. We offer assembled and aligned air-spaced multi-element lens systems made from fused silica and optical glass. Achromatic systems combine lenses of different glass materials and dispersion properties; appropriate matching is necessary to correct chromatic aberration effectively, especially in the visible band. Such systems commonly use cemented configurations. However, cementing reduces the system damage threshold, making these systems suitable for laser applications with average power below 200 W. Model | Focal Length [mm] | Focal Spot Size 1/e² [µm] | Clear Aperture [mm] | Center Thickness [mm] | Working Distance [mm] 532nm | 532nm | 532nm | 532nm | 532nm | 532nm S6ASS2020-292 | 25 | 2.4 | 25.0 | 13.5 | 19.3 S6ASS2060-292 | 62 | 3.0 | 40.0 | 32.0 | 47.9 S6ASS5300-292 | 100 | 5.4 | 41.0 | 16.0 | 86.7 S6ASS6151-292 | 150 | 7.2 | 56.0 | 20.0 | 135.0 S6ASS6200-292 | 200 | 6.6 | 54.0 | 15.0 | 188.5 355nm | 355nm | 355nm | 355nm | 355nm | 355nm S6ASS2020-075 | 25 | 1.6 | 25.0 | 17.0 | 17.9 S6ASS2060-075 | 60 | 2.8 | 40.0 | 30.0 | 46.5 S6ASS5120-075 | 114 | 5.6 | 48.0 | 20.0 | 104.4 266nm | 266nm | 266nm | 266nm | 266nm | 266nm S6ASS2020-199 | 24 | 1.4 | 25.0 | 17.0 | 17.1 S6ASS2060-199 | 57 | 2.2 | 40.0 | 30.0 | 43.9 S6ASS5120-199 | 109 | 4.6 | 48.0 | 20.0 | 99.1
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Overview
Specifications
| Parameter | Value |
|---|---|
| design wavelength | 532 nm |
| effective focal length | 24.5 mm |
| working distance | 19.3 mm |
| clear input aperture | 12.5 mm |
| clear output aperture | 12.5 mm |
| max. input beam diameter | 12.5 mm |
| wavefront error [peak to valley on axis proved by design；for 1/e² diameter of 10.5；beam diameter vignetted at 1/e²] | <λ/10 |
| spot radius [86% level；Gaussian beam M²=1；10.5mm diameter at 1/e²，clipped at 1/e²] | 1.20 µm |
| Laser Induced Damage Threshold (coating) [1ns pulse at 50Hz; at the design wavelength and Gaussian intensity profile; the original footnote explicitly gives the full name of LIDT] | 2.5 J/cm² |
| total transmission | 98 % |
| total number of lenses | 3 |
| lens material | fused silica |
| diameter | 25.0 mm |
| length | 13.5 mm |
Datasheet
Supplier Information
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