Infinity Differential Blackbodies
- Technology
- IR blackbodies and test systems
- Partner
- Santa Barbara Infrared (SBIR)
The Infinity™ Differential Blackbody Series from Santa Barbara Infrared, Inc. is a range of high-precision infrared (IR) radiation sources designed for radiometric calibration, sensor characterisation, and electro-optical (E-O) testing. These systems generate highly stable and uniform thermal outputs, enabling accurate simulation of IR scenes for demanding test environments.
Engineered for laboratory, production, and system-level test applications, the Infinity Series supports critical measurements such as MRT, MTF and SiTF, as well as non-uniformity correction and detector calibration.
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.
- Industry-leading accuracy and milli-Kelvin stability
- Exceptional spatial uniformity across the emitting surface
- Modular, configurable platform with multiple sizes and temperature ranges
- Advanced automation and integration via IRWindows™ software
Typical markets and applications include: Defence and security (thermal imaging calibration), Aerospace and space sensor validation, Industrial inspection and machine vision, Photonics and infrared R&D laboratories, Electro-optical system integration and testing

Range features
A high level overview of what this range offers
- Ultra-high temperature accuracy – iProbe temperature sensors deliver precision control with accuracy down to ±0.01°C, ensuring reliable and repeatable measurements.
- Outstanding spatial uniformity – >98% uniformity across the emitting surface minimises measurement uncertainty and improves calibration consistency.
- Milli-Kelvin stability – Advanced control electronics enable precise thermal contrast testing at extremely low temperature differentials.
- High emissivity performance – Spectrally flat emissivity (>0.97 MWIR, >0.95 LWIR) with optional Vantablack® coating for near-ideal blackbody performance.
- Fast response and settling time – Rapid heating/cooling rates with settling times under 45 seconds improve test efficiency.
- Flexible system integration – Ethernet, GPIB and RS-232 interfaces allow seamless integration into automated test environments.
- Advanced automation capability – Compatible with IRWindows™ software for automated setup, execution and analysis of IR sensor tests.
- Reduced downtime with iProbe technology – Independently calibrated probes can be swapped without recalibrating the entire system, maximising uptime.
What’s in this range?
All the variants in the range and a comparison of what they offer
| Model Variant | Emitting Surface Size | Temperature Range (ΔT / Absolute) | Emissivity | Uniformity | Stability | Notes |
|---|---|---|---|---|---|---|
DB-04 | 4″ square | A: -25°C to +75°C / 0°C to 100°C |
|
| ≤0.001°C (typical) | Compact, entry configuration |
DB-06 | 6″ square | Same as above | Same as above | Same as above | Same as above | Balanced performance and size |
DB-08 | 8″ square | Same as above | Same as above | Same as above | Same as above | Suitable for mid-size optics testing |
DB-12 | 12″ square | Same as above | Same as above | Same as above | Same as above | Large aperture for system-level testing |
DB-14 | 14″ square | Same as above | Same as above | Same as above | Same as above | Maximum coverage and uniformity |







