Extended Area Low Temperature (EXLT series) Blackbodies
- Technology
- IR blackbodies and test systems
- Partner
- Santa Barbara Infrared (SBIR)
SBIR’s Extended Area Low Temperature Blackbody systems are designed for applications requiring large-area, uniform IR sources at low and sub-ambient temperatures. These systems provide stable, high-uniformity output across extended apertures, making them ideal for wide-field sensor calibration and environmental testing. With integrated features such as dry gas purge and extended temperature ranges, these systems are optimised for demanding laboratory and environmental test conditions.
This blackbody system can achieve temperatures as low as -40°C in an uncontrolled lab environment. A recirculating refrigerated bath cools the blackbody to control the blackbody surface precisely at the desired setpoint.
The EXLT series is made of: a blackbody, refrigerated bath, temperature controller, cables, and hoses. The operation of the system is straightforward, and maintenance is minimal.
The iProbe from SBIR is a temperature sensor calibrated independently of the blackbody system. To re-calibrate the system you need only exchange the probe with a recently calibrated one.
The optional ultra-black surface coating – VANTABlack®-S can be applied to the source plate providing high-performance emissivity on a flat plate blackbody system.
- Large-area uniform IR emission for wide FOV systems
- Extended low-temperature operation down to -40°C
- High stability and emissivity across large apertures
- Designed for environmental and chamber-based testing
Range features
A high level overview of what this range offers
- Extended area emission – Large apertures provide uniform IR output for wide-field imaging systems.
- Low-temperature capability – Supports operation from -40°C up to +175°C.
- Dry gas purge system – Prevents condensation and ensures stable operation at low temperatures.
- High uniformity output – Ensures consistent radiometric performance across the full emitting surface.
- Broadband IR performance – Suitable for MWIR and LWIR applications.
- Flexible system integration – Interfaces easily with automated EO test systems.
- Optional high-emissivity coatings – Enhances performance for precision calibration.
- Robust environmental design – Ideal for chamber-based and field testing applications.
What’s in this range?
All the variants in the range and a comparison of what they offer
| Model Variant | Aperture Size | Temperature Range | Emissivity | Key Feature | Notes |
|---|---|---|---|---|---|
EX-LT-04 | 4″ | -40°C to +175°C | High (>0.95 typical) | Compact extended-area | Lab use |
EX-LT-08 | 8″ | -40°C to +175°C | Same | Larger uniform source | Wide FOV systems |
