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AVT Stingray: Cameras Without Sensor Cover Glass For Special Applications

4 Aug 2010

The Stingray camera from Allied Vision Technologies is now available in a version that has no cover glass over the sensor. This unusual configuration is intended for use for special applications such as laser beam profiling, the use of extended wavelength response coatings or endoscopy, where fibre optics need to be coupled directly to the sensor itself.

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.

Allied Vision

Stadtroda, Germany

For 25 years, Allied Vision has been helping people to be faster, more precise, and more efficient in whatever matters to them. From raising production standards to detect diseases faster, proving scientific theories true, monitoring traffic intelligently or simply knowing who crossed the finish line first – with their technology and expertise, Allied Vision helps customers to gain insight by seeing more and hence be more successful in what they do.


Puchheim, Germany

STEMMER IMAGING has been one of the leaders in the machine vision market since 1987. It is one of Europe's largest technology providers 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 80,000 imaging applications in various industries.