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  • Radiation-Blocking Detectors
Mar 2014
Cal Sensors Inc. (See Opto Diode Corporation)
SANTA ROSA, Calif., March 12, 2014 — Cal Sensors has released a line of single-channel detectors that block radiation below 1.2 µm for applications including medical diagnostics, environmental gas analysis, fire detection, process and quality control, and thermal imaging or hot-spot detection.

The silicon detectors are packaged with antireflection windows to block unwanted UV and visible radiation, instead focusing on the IR spectrum from 1.2 to 5.5 µm. They are available in PbS or PbSe detector material, 2 × 2- or 3 × 3-mm active-area sizes, and ambient or cooled configurations.

antireflection coating
A thin layer of material applied to a lens surface to reduce the amount of reflected energy. Ideally the index of refraction of that material should be equal to the square root of the product of the indices of the material on either side of the coating, while the ideal thickness for a single-layer coating is one-quarter of the wavelength at which reflectance is to be minimized. See also multilayer coating.
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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