SWIR thermography cameras

SWIR thermography cameras

SWIR thermography cameras

What are SWIR thermography cameras?

InGaAs shortwave infrared (SWIR) cameras usually work in a reflective imaging mode where the camera detects light reflected from the object under investigation. This light can originate from the sun, the moon, stars, night glow, an industrial illumination source such as bulb lamps, LEDs, lasers, etc … However, SWIR cameras can also detect infrared radiation emitted by hot objects with temperatures above 300°C. When calibrating a SWIR imaging camera such that the camera can indicate the temperature of the hot object, we have converted the imaging camera into a SWIR thermography camera. . 

What are SWIR thermography cameras used for?

Examples of high temperature imaging and thermography applications are industrial furnace monitoring, glass bottle inspection, detection of slag impurities in molten metal, hot mold inspection, …. In these applications high speed thermal radiation in the SWIR spectrum is often required. High speed in this case means with several hundreds of frames per seconds for area scan cameras or at several KHz linerate for line scan cameras.

High speed SWIR imaging is a typical request from the civil research and development (R&D) users. Fast passing objects like planes and their engine exhausts can be tracked. In stationary applications, sometimes very fast temperature changes have to be analyzed, such as in a vacuum melting furnace.

 

What features are needed ?

In general users of this type of products need very flexible camera equipment to follow the different conditions they may encounter during their various projects.

One key element is to be able to detect temperature differences in high speed. Depending on the thermal scene and the related temperature range it is necessary to adopt the integration time on the camera. By doing this the imaging speed as well as temperature range and camera sensitivity are tuned in the best possible way to meet the application requirements.

Beside powerful core electronics enabling this flexibility, a rugged data interface like CameraLink or CoaXPress is required to assure a complete data processing to the receiving computer resp. data collecting unit.

In addition it is important to have a wide selection of interchangeable lenses such that the camera is easily adapted to the individual scenario.

 

What do we offer?

For SWIR thermography we offer the Cheetah-640-CL. This SWIR InGaAs camera is available with radiometric calibrations up to 2000°C. 

For SWIR imaging of hot objects we offer our Bobcat-320Bobcat-640-CL and Bobcat-640-GigE SWIR InGaAs cameras. 

For high speed line scan imaging of hot objects we offer our Lynx series. The Lynx comes in three resolutions (512, 1024 and 2048 pixels) and CameraLink or GigE Vision interface.

What features are needed?

  • SWIR wavelength range
    SWIR InGaAs detectors are sensitive in the 0.9 - 1.7 μm SWIR band
  • High frame rate
    High frame rates allow us to capture fast moving objects
  • Low noise level and high dynamic range
    A low noise level assures a high sensitivity, while a high dynamic range results in a high image contrast
  • Digital high speed interface
    A digital interface like CameraLink, GigE or CoaXPress is necessary to assure reliable and fast data transfer

Are you looking for more information? 

Let us know. We are happy to help.

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Documents

Application notes
SWIR cameras are perfectly suited for high temperature thermal imaging applications. SWIR cameras are useful tools for high temperature thermal imaging applications.

World's first InGaAs camera photon emission microscope

Xenics enabled Semicaps to realize the world's first InGaAs camera photon emission microscope in 2004. Since then Xenics and sInfraRed have supported us in our endeavors for better sensitivity and resolution in photon and thermal emission microscopy.

Chua Choon Meng, CEO Semicaps