02/07/2006 • Image processing / Optical metrology • Sensor Technology

IRCAM Taurus cameras: Flexibility and Reliability

Taurus cameras are fast and flexible IR cameras (Infrared imaging systems, thermal cameras) for a wide range of applications. With a maximum pixel rate of 18 Mpixels/s Taurus cameras exhibit effective data rates of 31.5 Mbytes/s (16.5 Mpixels/s). Taurus cameras use cooled FPA detectors which permit high speed and excellent sensitivity.

Besides speed, the size of a detector (number of pixels) is an important feature of IR cameras. The total pixel rate of an IRCAM camera is given with its product name: 110k denotes a total of 110.592 pixels (384x288) and 327k a total of 327.680 pixels (640x512). The spectral sensitivity range of the camera is given by the letter in the product name: S (SWIR), M (MWIR) or L (LWIR).

The Taurus 110k SM pro is an IR camera for universal use in research, thermography and industry. Its high thermal, temporal and spatial resolution, the extended spectral range, the integrated MIO interface and the extension options make the Taurus 110k SM pro an ideal measurement tool for sophisticated users with different applications and tasks. It is adequate for pulse thermography, lock-in thermography and other active IR imaging measurement methods.

The high speed of the Taurus 110k SM pro with an effective data rate of 31.5 Mbytes/s (16.5 Mpixel/s) permits a full frame rate of 150 Hz and sub-frame rates of over 5 kHz.

As a special feature, the Taurus 110k SM pro has an MIO interface for digitizing external analog signals with high precision. This permits to perform “self tuning” lock-in measurements and thermoelastic stress analysis (TSA). Moreover, with the MIO interface it is possible to generate digital trigger and lock-in reference signals which can be used for synchronized control of external devices. Additional trigger inputs are used for triggering the integration time or for resetting the camera-internal frame counter. This option is specially suitable for active thermography which is getting more and more important within the non-destructive testing (NDT).
The spectral extension with the range between 1.5 µm and 3.4 µm improves the sensitivity of the IR camera at high object temperatures. For laboratory use the extended spectral range has advantages over normal MWIR cameras (3.4 µm to 5 µm).

Overview of the most important technical features:
  • Detector type: Mercury cadmium telluride (MCT) focal plane array (FPA)
  • Detector size: 110.529 (384 x 288) pixels
  • Spectral range: 1.5 µm – 5 µm (SM)
  • Effective data rate: 31.5 Mbytes/s
  • Effective pixel rate: 16.5 Mpixels/s
  • Fullframe rate: 150 Hz
  • Integration time range: 10 µs – 4 ms
  • NETD: < 20 mK
  • A/D resolution: 14 bit
  • Windowing: central, variable
  • Frame rate (windowing): > 5 kHz
  • Data interface: Camera Link
  • Cooling: Stirling
  • Measurement interface: MIO - Frame synchronous signal generation and processing; - 2x analog in (24 bit), 2x digital in, 2 x digital out
  • Option –F: Filter wheel (4 – 6 positions)
  • Option –G: Gigabit Ethernet (additional data interface)
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