Ernest 6 | VGA 640×480 Low SWaP LWIR Thermal Camera
Spectral range
8 - 14 µm
Resolution - Pitch - FPS
640x480 px - 12 µm - 60 Hz
NEdT
35mk (typ.)
Interface
UVC (USB Video Class)
Radiometry
Optional: -10º to +120ºC
SOM/OS compatibility
Windows 10/11, Linux x64 and ARM, NVIDIA Jetson, Raspberry Pi
HFOVs
86º, 48º, 33º, 23º, 12º, no lens
Available (w/o license) in:
🇺🇸 (ships from 🇺🇸); 🇪🇺,🇨🇦, 🇦🇺, 🇳🇿, 🇮🇸, 🇯🇵, 🇨🇭, 🇬🇧, 🇳🇴 (ships from 🇫🇷)
Meet Ernest 6, member of the SeeCube small thermal camera core family
Introducing the Ernest 6, a standout in Senssight’s SeeCube family, engineered to set a new standard in VGA thermal infrared camera cores. Featuring a 640×480 pixel array with a 12 μm pixel pitch and exceptional thermal sensitivity of 35 mK, this small thermal camera delivers precise imaging in an industry-leading 21 x 21 mm form factor. Equipped with a 60 Hz frame rate, a range of lens options offering 15° to 90° HFOV, and radiometric capabilities covering -10°C to 120°C, the Ernest 6 excels in demanding applications. Its low-power USB interface, optional shutterless calibration, and robust -35°C to 75°C operating range make it an ideal solution for industrial systems, night vision equipment, and unmanned aerial vehicles. Compact yet powerful, the Ernest 6 is designed for professionals who require reliability and performance without compromise.
The Ernest 6 LWIR thermal camera offers three operational modes in a single, streamlined package. Its built-in mechanical shutter ensures precise shuttered performance, while a factory calibration enables exceptional image quality in shutterless mode, thus adapting effortlessly to diverse conditions. Additionally, pixel-level radiometric calibration enables accurate temperature measurements from -10ºC to +120ºC. The Ernest 6 combine cutting-edge technology with a remarkably efficient design, setting a new standard in thermal imaging excellence.
SeeCube family in a nutshell
Which SeeCube Camera Fits Your System?
All three SeeCube cores share the same 12 micron pixel pitch, 60 Hz frame rate, 35 mK thermal sensitivity, USB UVC interface, and three operating modes. Resolution and physical size are the entire decision.
| Model | Resolution | Shared specifications | Choose it when |
|---|---|---|---|
| Eileen 3 | QVGA 320 x 240 | 12 µm pitch, 60 Hz, 35 mK, UVC over USB, shuttered / shutterless / radiometric | Cost and size dominate, and the scene is close or the target is large |
| Ernest 6 (this page) | VGA 640 x 480 | 12 µm pitch, 60 Hz, 35 mK, UVC over USB, shuttered / shutterless / radiometric | The balanced choice: four times the pixels of QVGA in a 21 x 21 mm core, with five USB connector options |
| Niels 12 | SXGA 1280 x 1024 | 12 µm pitch, 60 Hz full frame, 35 mK, USB, shuttered / shutterless / radiometric | Maximum detail or range is required, and the extra size and data rate are acceptable |
Because pixel pitch is identical across the family, moving up in resolution widens the field of view at a given lens rather than magnifying the scene: an Ernest 6 sees four times the area an Eileen 3 sees through the same optic, at the same detail per pixel. Choosing between them is therefore a question of how much scene must be covered at once, not how sharp the image is.
See the full LWIR thermal cameras and cores lineup for radiometric and industrial thermography options beyond the SeeCube family.
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Redefining low SWaP-C
Optimized for size (21 x 21 mm X,Y), weight (<20 g without lens) and power (<400 mW) with a competitive price tag.

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3 modes of operation
- Shuttered (PN: E6_xx_xx_xx_N):
- An embedded mechanical shutter located between the sensor and the lens is activated for on-the-fly flat-field corrections (FFC).
- As the sensor temperature changes (time to reach thermal equilibrium, changes in environmental temperature etc), the uniformity of the sensor’s response also changes and a flat-field correction is necessary.
- A flat-field correction essentially consists of an offset and gain correction for each pixel in order to have a homogeneous intensity distribution (or flat-field) when looking at a black body, in this case the metal surface of the mechanical shutter itself.
- The FFC is activated automatically by setting a time delay (ms) or sensor temperature difference (ºC/K) or manually by calling a function of the SDK.

Shutterless (PN: E6_xx_xx_xx_SL+):
- This mode requires a shutterless factory calibration during which the entire camera with its lens is placed in a thermal chamber to simulate a change of environmental temperature (and therefore sensor temperature) in a controlled fashion.
- The thermal chamber temperature is varied between ~+10ºC and +60ºC.
- The calibration consists of acquiring data with the camera facing a black body as the thermal chamber temperature changes.
- The result of this calibration is a unique set of correction files that are specific to each camera.
- These files are contained in a folder called data. When using the camera in shutterless operation, the image quality remains the same despite changes in the sensor temperature.

Radiometric shutterless (PN: E6_xx_xx_xx_R1):
- This mode requires an additional calibration layer on top of the shutterless calibration.
- A black body with a temperature range of ~+5ºC to +120ºC is used to make the correspondence between pixel intensity and absolute temperature (in ºK or ºC).
- The temperature measurement is guaranteed with an accuracy of +/-2°C or 2% (typical). In this mode, the camera returns a thermal frame in 32-bit floats.

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USB interface
Direct connection to with USB connectivity – No need for an external power supply – multiple USB connector options on Ernest 6 only
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| USB-C / female / straight | USB-C / female / right angle | USB-C / male / right angle | USB-A Micro / female / straight | USB flex cable |
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UVC protocol (USB Video Class)
Webcam-like for experience for easy integration and plug-and-play feeling

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High sensitivity
NEdT of 35 mK w/o denoising or filtering
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Free C++ SDK with OpenCV sample app
OpenCV based application and C++ API for Windows 10/11, Linux, Linux for ARM (Nvidia Jetson, Raspberry Pi OS)

| Thermal Imager | |
|---|---|
| Sensor | ATTO640 |
| Spectral Range | 8 - 14 µm |
| Resolution | 640 x 480 px |
| Pixel Pitch | 12 µm |
| Frame Rate | 60 Hz |
| Thermal Sensitivity (NETD) - w/o denoising/filtering | 35 mK |
| Time to Image | < 4 s |
| Physical Shutter | Yes |
| Image/control protocol & interface | |
|---|---|
| Image transfer protocol | USB UVC (USB Video Class) |
| Data Format | Y16 (16-bit unprocessed) |
| Control protocol | USB CDC (Com. Device Class) |
| USB Speed | USB2.0 |
| Connector Type | USB-C female (straight or right-angle), USB-C male (straight), USB Micro A (right-angle), USB Flex |
| Mode of operation (to be specified at order) | |
|---|---|
| Mode 1: Shuttered operation only | Factory BPC (Bad Pixel Correction), 1-point NUC by shutter activation |
| Mode 2: Shutterless operation | Factory calibrated for shutterless operation (BPC + NUC) + 1-point NUC by shutter activation if needed |
| Mode 3: Shutterless radiometry | All image pixels factory calibrated for radiometric shutterless operation (-10ºC to +120ºC, Typical +/-2°C or 2% accuracy) |
| Electrical | |
|---|---|
| Power Consumption | < 400 mW |
| Power Supply Voltage | 5 V (USB powered) |
| Additional shutter activation power | 1.8 W (100 ms) |
| Input trigger - Optional | 3.3 VDC - start of exposure |
| Physical | |
|---|---|
| Dimensions (mm3) | 21 x 21 x 23.7 (USB-C female, straight) - no lens |
| 21 x 21 x 22.2 (USB-C female, right angle) - no lens | |
| 21 x 21 x 21.5 (USB-C male, right angle) | |
| 21 x 21 x 23.9 (USB micro A female, straight) - no lens | |
| 21 x 21 x 17.5 (USB flex, right angle) - no lens | |
| Weight | ~20 g (no lens) |
| Environmental | |
|---|---|
| Operating Temperature Range | -35° to 75°C |
| Optimal Radiometry Temperature Range | 10º to 60º C |
Other lens options available upon request
How to Read an Ernest 6 Part Number
Every Ernest 6 is built to order from four choices: lens, connector, operating mode, and radiometry. The part number records that configuration, so quoting the correct string avoids a reconfiguration cycle later.
| Field | Selects | Options |
|---|---|---|
| E6 | Model | Ernest 6, VGA 640 x 480 SeeCube core |
| Lens | Horizontal field of view | 86, 48, 33, 23, 12, or no lens (see the Lenses tab) |
| Connector | USB interface style | USB-C female straight, USB-C female right angle, USB-C male right angle, USB micro A female straight, or USB flex cable |
| Mode suffix | Calibration and operating mode | N shuttered only, SL+ shutterless, R1 radiometric shutterless |
The mode suffix carries the most weight because it is set by factory calibration and cannot be changed after shipment. Shuttered units correct uniformity by activating the internal mechanical shutter. Shutterless units are calibrated across roughly +10°C to +60°C in a thermal chamber so image quality holds as the sensor warms, with the shutter still available if needed. Radiometric units add a black body calibration from about +5°C to +120°C, returning absolute temperature in 32-bit floats to a typical accuracy of ±2°C or 2 percent.
Note that shutterless and radiometric calibrations are performed with the lens fitted, so the lens and mode choices are linked. Confirm both before ordering, or contact Axiom Optics with the application and an engineer will specify the full part number.
Ernest 6 – VGA – 640 x 480 px – 50º HFOV
Ernest 6 – VGA – 640 x 480 px – 50º HFOV
Ernest 6 – VGA – 640 x 480 px – 50º HFOV
Axiom Optics Blogs
Webcam-like device – UVC (USB Video Class device)

SeeCube OpenCV app (for Windows 10/11, Linux, Linux for ARM)
Easy-to-use app allowing the user to:
- open/close shutter
- enable/disable shutterless correction
- change mapping mode (full scale, automatic min/max, manual, histogram equalization, adaptive mapping)
- change color mapping / LUT
- acquire 1-point NUC by covering the lens
- acquire 1-point NUC by shutter activation
- enable/disable temporal filtering
- save still images (uncompressed + color)
- save videos (uncompressed + color)

- SeeCube C++ API (for Windows 10/11, Linux, Linux for ARM)
Note: drawings with USB-C straight configuration





Lens Options
The Ernest 6 accepts five standard athermalized LWIR lenses, with other focal lengths available on request. Because field of view, range, and spatial detail all follow directly from focal length, the lens choice defines what the camera can resolve at working distance more than any other configuration decision.
Field of view and optical specifications
| HFOV | VFOV | Focal length | F number | IFOV | Typical use |
|---|---|---|---|---|---|
| 86° | ~68° | 5.5 mm | F1.2 | 2.18 mrad | Wide area situational awareness, close range robotics, indoor coverage |
| 48° | ~37° | 9.1 mm | F1.1 | 1.32 mrad | General purpose imaging, handheld and UAV survey work |
| 33° | ~25° | 13 mm | F1.0 | 0.92 mrad | Building and electrical inspection, mid range monitoring |
| 23° | ~17° | 19 mm | F1.0 | 0.63 mrad | Perimeter security, elevated fixed installations |
| 12° | ~9° | 35 mm | F1.1 | 0.34 mrad | Long range detection, narrow corridor and approach monitoring |
The camera is also available with no lens for integrators supplying their own optics. IFOV is the angle subtended by a single 12 micron pixel and sets the smallest detail the camera can resolve at any distance.
Spatial resolution at working distance
The figures below give the ground sample distance, or how much of the scene falls on one pixel, at three common working distances.
| Lens | At 1 m | At 5 m | At 10 m | At 50 m |
|---|---|---|---|---|
| 86° / 5.5 mm | 2.2 mm | 10.9 mm | 21.8 mm | 109 mm |
| 48° / 9.1 mm | 1.3 mm | 6.6 mm | 13.2 mm | 66 mm |
| 33° / 13 mm | 0.9 mm | 4.6 mm | 9.2 mm | 46 mm |
| 23° / 19 mm | 0.6 mm | 3.2 mm | 6.3 mm | 32 mm |
| 12° / 35 mm | 0.3 mm | 1.7 mm | 3.4 mm | 17 mm |
Estimated DRI ranges
Detection, recognition, and identification ranges follow the Johnson criteria for a standing person (1.8 x 0.5 m) and a vehicle (2.3 x 2.3 m). These are geometry limited estimates assuming clear atmosphere and adequate thermal contrast; humidity, rain, and low scene contrast all reduce achievable range in the field.
| Lens | Person: detect | Person: recognize | Person: identify | Vehicle: detect | Vehicle: recognize |
|---|---|---|---|---|---|
| 86° / 5.5 mm | 170 m | 57 m | 29 m | 525 m | 175 m |
| 48° / 9.1 mm | 285 m | 95 m | 47 m | 870 m | 290 m |
| 33° / 13 mm | 405 m | 135 m | 68 m | 1245 m | 415 m |
| 23° / 19 mm | 590 m | 198 m | 99 m | 1820 m | 605 m |
| 12° / 35 mm | 1090 m | 365 m | 182 m | 3350 m | 1120 m |
Choosing and changing lenses
Wide lenses buy coverage at the cost of detail, narrow lenses do the reverse, and there is no way around that trade at a fixed 640 x 480 array. Start from the smallest feature that must be resolved and the distance at which it sits, then read the spatial resolution table for the lens that puts at least a few pixels across that feature.
One integration note matters more than the specifications: shutterless factory calibration is performed with the camera and its lens together, so a shutterless or radiometric unit is calibrated to the lens it ships with. Changing the lens in the field invalidates that calibration and requires recalibration to restore image uniformity and radiometric accuracy. Systems that need multiple fields of view are usually best served by multiple configured units rather than one swappable one.
Need a focal length outside this range, or unsure which lens suits the scene? Send the target size and working distance to Axiom Optics and an engineer will confirm the right configuration.










Lenses





