978-474-0044
Edmund Optics TECHSPEC® SilverTL™ SWIR Telecentric Lenses are high-resolution bi-telecentric lenses designed for precision measurement, inspection, and industrial machine vision applications in the short-wave infrared (SWIR) spectrum. Optimized for wavelengths from 900 to 1700 nm, these lenses feature broadband anti-reflection (BBAR) coatings to deliver high-quality SWIR imaging. Their bi-telecentric optical design minimizes perspective and parallax errors, providing consistent magnification for accurate dimensional measurements, gauging, and semiconductor inspection.
SilverTL SWIR lenses support resolutions up to 7.5 megapixels with 2.8 µm pixel size sensors and are available in multiple magnifications to accommodate different field-of-view requirements. Featuring C-mount compatibility, a simplified non-focusing mechanical design, and an adjustable iris with a locking set screw, these lenses are well suited for demanding industrial inspection environments.
Select models offer inline illumination for applications requiring controlled, uniform lighting. Standard front filter threads accommodate optical filters, protective windows, and illumination accessories, providing additional flexibility for SWIR machine vision systems.
Edmund Optics is a leading global manufacturer and supplier of high quality imaging lenses for machine vision. Contact us if you would like help choosing the right lens for your industrial machine vision applications.
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Data Sheet |
Lens Outline Drawing |
Main optical specifications | Object field of view | Advanced optical specifications | Mechanical specifications | |||||||||||||||||||
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| Name | Part number | Mag. | Max. Sensor Format | Maximum Diameter |
Horizontal FOV 1.2" Sensor | Horizontal FOV 1/3" Sensor | Horizontal FOV 1/1.8" Sensor | FOV @ Max Sensor Format |
Working Distance | Working Distance Tolerance** | Typical Telecentricity @ 588nm (°) | Typical Distortion @ 588nm (%) | NA Object Side |
Resolution Image Space MTF @ f/10 | Wavelength Range | Aperture (f/#) | Coating | Depth of Field (mm) | Length Excluding Threads | Filter Thread | Weight (g) | Mount | |||
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0.16X SilverTL SWIR | 26-624 | 0.16X | 1/2" | 65mm | 40mm | 30mm | 40.0 x 30.0 | 177mm | ±3 mm | <0.030 | <0.015 | 0.008 | >40% @ 40 lp/mm | 900 - 1700nm | f/6 - f/22 | 900 - 1700nm BBAR | ±19.74 at f/10 (20% @ 20 lp/mm) | 191mm | M62 x 0.75 (Female) | 416 | C-Mount | |
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0.20X SilverTL SWIR | 26-625 | 0.2X | 1/1.8" | 60mm | 32mm | 24mm | 35.9mm | 36.0 x 27.0 | 164mm | ±3 mm | <0.055 | <0.150 | 0.016 | >40% @ 40 lp/mm | 900 - 1700nm | f/6 - f/22 | 900 - 1700nm BBAR | ±12.9 at f/10 (20% @ 20 lp/mm) | 188mm | M58 x 0.75 (Female) | 346 | C-Mount |
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0.25X SilverTL SWIR | 26-626 | 0.25X | 1/2" | 48mm | 25.6mm | 19.2mm | 28.8 x 21.6 | 160mm | ±3 mm | <0.035 | <0.040 | 0.021 | >40% @ 40 lp/mm | 900 - 1700nm | f/6 - f/22 | 900 - 1700nm BBAR | ±8.2 at f/10 (20% @ 20 lp/mm) | 158mm | M46 x 0.75 (Female) | 266 | C-Mount | |
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0.30X SilverTL SWIR | 26-627 | 0.3X | 1/2" | 46mm | 21.3mm | 16mm | 21.3 x 16.0 | 139mm | ±3 mm | <0.025 | <0.015 | 0.025 | >40% @ 40 lp/mm | 900 - 1700nm | f/6 - f/22 | 900 - 1700nm BBAR | ±5.7 at f/10 (20% @ 20 lp/mm) | 158mm | M43 x 0.75 (Female) | 291 | C-Mount | |
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0.40X SilverTL SWIR | 26-628 | 0.4X | 1/1.8" | 45mm | 16mm | 12mm | 18mm | 18.0 x 13.5 | 103mm | ±3 mm | <0.015 | <0.020 | 0.033 | >40% @ 40 lp/mm | 900 - 1700nm | f/6 - f/22 | 900 - 1700nm BBAR | ±3.0 at f/10 (20% @ 20 lp/mm) | 159mm | M43 x 0.75 (Female) | 228 | C-Mount |
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0.50X SilverTL SWIR | 26-629 | 0.5X | 1/1.8" | 40mm | 12.8mm | 9.6mm | 14.4mm | 14.4 x 10.8 | 120mm | ±3 mm | <0.012 | <0.200 | 0.041 | >40% @ 40 lp/mm | 900 - 1700nm | f/6 - f/22 | 900 - 1700nm BBAR | ±2.1 at f/10 (20% @ 20 lp/mm) | 153mm | M37 x 0.75 (Female) | 226 | C-Mount |
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0.50X In-Line Illumination SilverTL SWIR* | 26-630 | 0.5X | 1/1.8" | 40mm | 12.8mm | 9.6mm | 14.4mm | 14.4 x 10.8 | 120mm | ±3 mm | <0.012 | <0.200 | 0.041 | >40% @ 40 lp/mm | 900 - 1700nm | f/6 - f/22 | 900 - 1700nm BBAR | ±2.1 at f/10 (20% @ 20 lp/mm) | 156mm | M37 x 0.75 (Female) | 233 | C-Mount |
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2.0X, SilverTL SWIR | #26-635 | 2.0X | 2/3" | 45mm | 3.2mm | 2.4mm | 4.4 x 3.3 | 75mm | ±3 mm | <0.075 | <0.040 | 0.164 | >40% @ 40 lp/mm | 900 - 1700nm | f/6 - f/22 | 900 - 1700nm BBAR | ±0.13 at f/10 (20% @ 20 lp/mm) | M43 x 0.75 (Female) | 280 | C-Mount |
* In-line illumination
**During production Edmund Optics adds shims to the telecentric lenses in the c-mount to maximize performance. This can shift the working distance from nominal by as much as 3mm in either direction (though usually much much less).
