SWIR Lenses
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 Beck Optronic Solutions 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 25.6 mm 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 | 25 mm | 1.4-22 | C-Mount | 65 mm | 58 mm | M37 x 0.50 |
| D1811-02 | 35 mm | 1.4-22 | C-Mount | 110 mm | 55 mm | M43 x 0.75 |
| D1811-03 | 50 mm | 1.8-22 | C-Mount | 90 mm | 65 mm | M52 x 1.00 |
| D1811-04 | 75 mm | 2.0-22 | C-Mount | 110 mm | 60 mm | M62 x 1.00 |
| D1811-05 | 100 mm | 3.0-22 | C-Mount | 130 mm | 50 mm | M37 x 0.50 |
| D1811-06 | 150 mm | 3.0-22 | C-Mount | 180 mm | 65 mm | M52 x 1.00 |
20 mm - 200 mm, 26.5 mm - 265 mm, 33 mm - 330 mm, & 53 mm - 530 mm Focal Length SWIR Zoom Lenses
Specifications
| Focal Length | 20 mm to 200 mm | 26.5 mm to 265 mm | 33 mm to 330 mm | 53 mm to 530 mm |
| F/# | F/4 | F/5.3 | F/6.6 | F/10.6 |
| Image size | 12.4 mm diagonal | 16.4 mm diagonal | 20.5 mm diagonal | 33 mm diagonal |
| Spectral correction | 700 nm to 1700nm | |||
| Field of view (horizontal) | ||||
| 640 x 512 x 15 µm detector | 27.0° to 2.8° | 20.5° to 2.1° | 16.6° to 1.76° | 10.3° to 1.0° |
| 1,280 x 1,024 x 10 µm detector | Not applicable | 27.0° to 2.8° | 22° to 2.2° | 13.8° to 1.4° |
| Focus range | 10 m to infinity | |||
| Zoom speed | ≤5 s wide to narrow and vice versa | |||
| Focus speed | ≤5 s 10 m to infinity and vice versa | |||
| Boresight retention | ≤+/-0.1 mrad | |||
| Operating temperature range | -20°C to +70°C | |||
| Mass | 1.8 kg | 2.0 kg | 2.13kg | 2.23 kg |
| Working voltage | 12 V DC nominal (7-15 V) | |||
| Power requirements | 0.5 A maximum | |||
| Vibration | MIL-STD-810G, method 514.6, Procedure 1, Category 20 | |||
| Shock | Transportation: 3 shocks in each direction, 25 g, 6 ms | |||
| Dimensions | 231* x 98.5 x 86 mm | 256* x 98.5 x 86 mm | 274* X 109 X 86 mm | 327* x 109 x 86 mm |
| Camera mount | C Mount | C Mount | C Mount | M42 |
| Control interface | RS-422/UART TTL/Pelco-D | |||
| * to image plane | ||||
500 mm SWIR Maksutov
Beck Optronic Solutions offers a high performance compact Maksutov telescope optimised for the SWIR 0.9 µm - 1.7 µm waveband.
Specifications
| Focal Length | 500mm |
| F/# | 6.25 |
| Maximum detector diagonal | 12 mm |
| Field of view | 1.1°x 0.8° with 384 x 288, 25 µm detector |
| Average transmission, 0.9 µm - 1.6 µm | 90% |
| Back focal distance | 17.5 mm |
| Interface | C mount or as required |
| Focus mechanism | Manual or motorised as an option |
| Weight | 1.5 kg |
| Dimensions | 200 mm long x 150 mm diameter |
| Operating temperature | -30 °C to +65 °C |
| Storage temperature | -40 °C to -70 °C |
300 mm f/3.6 Catadioptric Visible & SWIR Lens
Specifications
| Focal Length | 300 mm |
| F/# | 3.6 |
| Maximum detector diagonal | 22 mm |
| Field of view | 3.05° x 2.45° with 640 x 512, 25 µm detector 1.85° x 1.45° with 640 x 512, 15 µm detector 2.45° x 1.95° with 1,280 x 1,024, 10 µm detector 0.65° x 0.50° with 656 x 520, 5 µm detector 1.20° x 1.00° with 1,280 x 1,024, 5 µm detector |
| Average transmission, 0.9 µm -1.6 µm | 90% |
| Back Focal Distance | 17.5 mm |
| Interface | C Mount or as required |
| Focus mechanism | Manual or motorised as an option |
| Weight | 2.54 kg |
| Dimensions | 160.5 mm long (to image plane) x 136 mm diameter |
| Operating temperature | -30 °C to +65 °C |
| Storage temperature | -40 °C to +70 °C |