Thermal Sources

Miniature, CW 1100K and 1275K IR blackbody sources

Our standard wirewound filament sources have an emissivity of ~0.8 and are available in 4-watt, 9-watt, and 25-watt versions. The coil is wound on an alumina ceramic cylinder. Operation in a controlled or sealed atmosphere is not required.  The 1100K 9-watt version is also available in a mechanically identical 1275K version drawing about 25 watts.  The only drawback of the higher temperature device is that the coil material require to survive the higher temperature takes longer to oxidize which means that the emissivity will change slightly over the first few weeks of constant use (rather than over only days in the lower temperature types).

• LC-IR-12 Miniature 9-watt Infrared Emitter
• CS-IR-2x Miniature 4-watt Infrared Emitter
• LC-IR-12 with Thermocouple: Monitored, Stabilizable IR Source
• Parabolic and Elliptical Reflectors for the LC-IR-12 and the CS-IR-2x

The following resources provide additional information on the infrared sources.

• LC-IR-12 and LC-IR-12K Life Test Summaries 
• LC-IR-12 and IR-40 Graphs of Temperature vs. Voltage
• Thermal Emitter Temperature to Color Correlation

Electrically modulated IR sources

We are a distributor of electrically modulated IR sources in TO-5 and TO-8 packages.   In general, these devices are useful with pyroelectric and thermopile detectors optimized at frequencies < 10 Hz.

• PulsIR Pulsed Infrared Radiator
• ReflectIR Collimated Pulsed Infrared Radiator
• IR-40 4-watt Infrared Source Unit

Gas analysis is the usual application of these devices.

• PulsIR Evaluation Kit Driver
• PulsIR Note on Appropriate Use
• LC-IR-12 and IR-40 Graphs of Temperature vs. Voltage

Mechanically modulated IR sources

We also offer hybridized versions of our CW IR sources with mechanical modulation (choppers) from <1 Hz to >1000 Hz.

• CH-10S and CH-20S modulated IR sources

We also offer hybridized versions of our optical shutters with IR sources.

• CH-50S and CH-60S modulated IR sources