AVT Stingray: Cameras Without Sensor Cover Glass For Special Applications
4 Aug 2010
This new variant of the Stingray further enhances its reputation as the ‘Transformer’ camera due to its modularity, offering a wide selection of lens- mounts, sensors, case variations, interfaces and cable outputs, which can be flexibly configured using building block principles.
For UV imaging in particular, the glass used to cover the sensor can absorb UV rays, inhibiting UV sensitivity. This can affect a number of applications such as semiconductor/wafer inspection, fluorescence in biology, DNA analysis, astronomy, monitoring of oil spills, monitoring of corona discharge effects in high voltage electrical transmission lines and imaging of invisible flames such as hydrogen and alcohol.
A sensor can be made more sensitive in the UV region of the spectrum by coating a UV-sensitive phosphor layer directly onto the surface of the sensor. Although this could be done by removing the cover glass from a conventional camera, it is a very specialist procedure which could result in damage to the sensor so the availability of cameras without the cover glass is an important consideration.
Sensor performance in the infrared can also be enhanced using specialised IR- sensitive phosphor coatings. In some cases this can offer a cost-effective alternative to the use of specialised IR sensors such as InGaAs.
The sensor is shipped with a special adhesive foil to protect it against humidity and dust. This can be removed in a dust-free environment before the sensor is adapted for its particular application.
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STEMMER IMAGING has been leading the machine vision market since 1987. It is Europe's largest technology provider in this field. In 1997 STEMMER IMAGING presented Common Vision Blox (CVB), a powerful programming library for fast and reliable development and implementation of vision solutions, which has been deployed successfully throughout the world in more than 40,000 imaging applications in various industries.