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Cambridge CMOS Sensors (CCS) recently announced the launch of its range of µBright infrared sources, its latest gas sensor components for low-power, long life optical gas sensing solutions. Designed to operate across the wideband IR range (2 to 14µm) these sensors can be used to continually sense gases, such as carbon dioxide, and ethanol vapours in NDIR (nondispersive infrared) systems at low power.
This CCS11x family of IR sources incorporate a new patented plasmonic structure, which has a layer of metallic dots with a defined geometry which creates a resonant effect, increasing the optical emissions of the CCS11x sources. These devices use CCS’s patented micro-hotplate design to deliver high optical emissions across a broad range (2µm to 15µm) of IR wavelengths with a very stable, low drift output. The plasmonic structure and the micro-hotplate are fabricated using a standard CMOS process.
This family of components have an inherently low thermal mass which allows for rapid heating to high temperatures (up to 600°C), allowing pulse mode operation at high frequencies and low power consumption.
Features and benefits of CCS11x µBright IR Sources include:
- Stable output with low drift - low resistance drift over lifetime removes need for compensation.
- Fast switching - Up to 38Hz at 50% modulation depth
- High IR radiation output - Up to 600°C operation with emissivity at 0.8 at 4.26µm
- Superior efficiency - Pulse mode operation
- Proven technology platform - Designed for high volume and reliability (>5year lifetime)
