Davin Optronics offers a range of high performance fixed focal length lenses and a zoom lens suitable for use in the SWIR (0.7-1.7µm) waveband.
Fixed Focal Length SWIR Lenses
The lenses and thin film coatings have been designed specifically for the SWIR waveband. Some suppliers offer "SWIR" lenses that are in fact visible waveband optics with only coatings optimised for SWIR. The Davin Optronics range of lenses is designed from first principles, with optical glasses as well as coatings optimised for operation in the SWIR waveband. Importantly, the performance is validated through SWIR waveband MTF testing.
These lenses are ideal for many applications including security, inspection, quality control and machine vision.
Designed with an image format of 25.6mm diameter, they are suitable for use with all the major area and linear array cameras available on the market.
Specifications
| Part number | Focal length | F/# | Mount | Length | Diameter | Filter thread |
| D1811-01 | 25mm | 1.4-22 | C-Mount | 65mm | 58mm | M37 x 0.5 |
| D1811-02 | 35mm | 1.4-22 | C-Mount | 110mm | 65mm | M43 x 0.75 |
| D1811-03 | 50mm | 1.8-22 | C-Mount | 125mm | 75mm | M52 x 1 |
| D1811-04 | 75mm | 2.0-22 | C-Mount | 188mm | 100mm | M62 x 1 |
20-200mm Zoom SWIR Lens
Specification
| Focal Length | 20mm to 200mm |
| F/# | 4-48 |
| Image size | 12.4mm diagonal |
| Detector format | 640 x 512 x 15μm 320 x 256 x 30μm 320 x 256 x 15μm |
| Spectral correction | 700nm to 1700nm |
| Field of view | 27° at 20mm (320 x 256 x 30μm or 640 x 512 x 15μm detector) 2.7° at 200mm (320 x 256 x 30μm or 640 x 512 x 15μm detector) 13.4° at 20mm (320 x 256 x 15μm detector) 1.34° at 200mm (320 x 256 x 15μm detector) |
| Focus range | 10m to infinity |
| Zoom speed | 5 seconds 20mm to 200mm |
| Working temperature range | -40°C to +70°C |
| Mass | 3kg |
| Working voltage | 12V DC main board 8V DC motors |
| Power requirements | 0.75A maximum |
| Dimensions | 213mm x 98.5mm x 85mm |