FLIR Lepton 3 & 3.5 Micro Thermal Imager
The FLIR Lepton 3.5 is the highest resolution LWIR micro thermal imaging module, offering a 160x120, 12-micron uncooled FPA with calibrated radiometric output across all 19,200 pixels. It provides an increased scene dynamic range up to +400C, offering greater flexibility for demanding applications. Designed with the same form and fit as other popular Lepton products, the Lepton 3.5 facilitates a fast and easy upgrade path. This revolutionary sensor, originally designed for smartphones and mobile platforms, now provides advanced capabilities for applications requiring temperature values and high-temperature scenes. Its small size, low power consumption, unmatched image quality, simple integration, and low cost make it an ideal tool for innovative product development.
Product Attributes
- Brand: FLIR
- Origin: USA (implied by corporate headquarters location)
- Certifications: None explicitly mentioned
Technical Specifications
| Specification | Lepton 3 | Lepton 3.5 |
| Sensor technology | Uncooled VOx microbolometer | Uncooled VOx microbolometer |
| Spectral range | Longwave infrared, 8 m to 14 m | Longwave infrared, 8 m to 14 m |
| Array format | 160 x 120, progressive scan | 160 x 120, progressive scan |
| Pixel size | 12 m | 12 m |
| Effective frame rate | 8.7 Hz (commercial application exportable) | 8.7 Hz (commercial application exportable) |
| Thermal sensitivity | <50 mK (0.050 C) | <50 mK (0.050 C) |
| Temperature compensation | Automatic. Output image independent of camera temperature. | Automatic. Output image independent of camera temperature. |
| Radiometric Accuracy | High gain Mode: Greater of +/- 5 C or 5% (typical) Low Gain Mode: Greater of +/- 10 C or 10% (typical) | High Gain Mode: -10 to +140 C Low Gain Mode: -10 to +400 C (at room temperature) -10 to +450 C (typical) |
| Non-uniformity corrections | Integral Shutter | Integral Shutter |
| Scene dynamic range | 0 to 120 C | High Gain Mode: -10 to +140 C Low Gain Mode: -10 to +400 C (at room temperature) -10 to +450 C (typical) |
| Image optimization | Factory configured and fully automated | Factory configured and fully automated |
| FOV - horizontal | 57 | 57 |
| FOV - diagonal | 71 | 71 |
| Lens Type | f/1.1 | f/1.1 |
| Output format | User-selectable 14-bit, 8-bit (AGC applied), or 24-bit RGB (AGC and colorization applied) | User-selectable 14-bit, 8-bit (AGC applied), or 24-bit RGB (AGC and colorization applied) |
| Solar protection | Integral | Integral |
| Input clock | 25-MHz nominal, CMOS IO Voltage Levels | 25-MHz nominal, CMOS IO Voltage Levels |
| Video data interface | Video over SPI | Video over SPI |
| Control port | CCI (I2C-like), CMOS IO Voltage Levels | CCI (I2C-like), CMOS IO Voltage Levels |
| Input supply voltage (nominal) | 2.8 V, 1.2 V, 2.5 V to 3.1 V IO | 2.8 V, 1.2 V, 2.5 V to 3.1 V IO |
| Power dissipation (Typical, room temp) | Nominally 150 mW (operating), 650 mW (during shutter event), 5 mW (standby) | Nominally 150 mW (operating), 650 mW (during shutter event), 5 mW (standby) |
| Package dimensions socket version (w x l x h) | 10.50 x 12.70 x 7.14 | 10.50 x 12.70 x 7.14 |
| Weight | 0.9 grams | 0.9 grams |
| Optimum operating temperature range | -10C to +65C | -10C to +80C |
| Non-operating temperature range | -40 C to +80 C | -40 C to +80 C |
| Shock | 1500 G @ 0.4 ms | 1500 G @ 0.4 ms |
| Part Numbers | 500-0726-01 | 500-0771-01 |
2504101957_FLIR-500-0771-01_C17634768.pdf
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