Infinity Differential Blackbodies

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

Infinity Differential Blackbodies

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 VariantEmitting Surface SizeTemperature Range (ΔT / Absolute)EmissivityUniformityStabilityNotes

DB-04

4″ square

A: -25°C to +75°C / 0°C to 100°C

B: -25°C to +150°C / 0°C to 175°C

C: -20°C to +75°C / -40°C to 100°C

D: -20°C to +150°C / -40°C to 175°C

0.970 (MWIR)

0.950 (LWIR)

98% of set ΔT

≤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