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Infrared Detector Arrays
Mar 2011
Cal Sensors Inc. (See Opto Diode Corporation)
SANTA ROSA, Calif., March 22, 2011 — Cal Sensors has launched its new LMA (linear multiplexed array) family of lead salt infrared detectors. Available in both PbS and PbSe material, the 256-element array provides sensitivity in the 1- to 5.5-µm wavelength region.

It features built-in compensation elements and a refined optional cooler controller, enhancing measurement stability by up to 25%.

It is suited for applications including gas analysis, spectroscopy, process and quality control, thermal imaging, hot-spot detection, manufacturing and assembly process lines, and buildings and railway systems.

The array consists of six compensation elements and 250 active elements and provides real-time measurement compensation for environmental changes. The measurement is adjusted based on a comparison of the six compensation elements and three active elements on each side of the array. The design reduces the effects of system noise by up to 10%, optimizing the measurement resolution, and the built-in shielding isolates the array from environmental variables that could reduce measurement accuracy.

The new optional cooler controller further optimizes measurement stability by providing the means to fine-tune the temperature set point via included software, allowing the array to be set at the optimal operating temperature for a particular target application.

The LMA technology is available in both rectangular (PbS and PbSe) and square (PbSe) configurations in an industry-standard 28-pin package. The optional refined cooler controller can be integrated with a USB electronics drive board.

infrared detector
A device used to detect radiation from the infrared region. It may be a thermal detector, such as a bolometer, thermocouple or Golay cell, or it may be a solid-state photon detector. Infrared-sensitive phosphors may be used in the infrared, and some photographic films may be used in the very near infrared.
process control
The collection and analysis of data relevant to monitoring the rate and quality of industrial production, either continuously or in batches. Corrections can be made manually or automatically, via a feedback control loop.
thermal imaging
The process of producing a visible two-dimensional image of a scene that is dependent on differences in thermal or infrared radiation from the scene reaching the aperture of the imaging device.
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