BGI 5006 PDF

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The wavelength range from approximately nm to 1 mm, i. IR radiation is often also called thermal radiation. In industrial machine vision, however, most of the applications are located in the near infrared range, which comprises the spectral range from to nm.

IR illumination

In the range between nm and nm normal monochrome CCD cameras can still be used for inspection, the sensitivity of which indeed increasingly diminishes but is basically sufficient. For longer-wave IR ranges, Peltier-cooled sensors and special semiconductor materials must be used.

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Cameras for the evaluation of the medium IR range are called thermographic cameras or thermal imaging cameras. The optics no longer consists of normal glass, but are made of materials like germanium.

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Therefore preferably LEDs with a range of approx. In case of the longer wavelength, lower straying at the surface and thus a better screening of the test object is to be expected, however the sensitivity of common CCD camera sensors is increasingly reduced.

Longer-wave radiation is electromagnetic vgi and therefore oscillates less frequently than shorter-wave radiation and thus generates less interaction with the material.

It is therefore capable of penetrating deeper into the material and generates fewer surface reflections than short-wave light. When using IR radiation it is sometimes even possible to look through an object.

As IR radiation is not visible to the human eye, it can be applied particularly well at workstations where normal light would be disturbing. Daylight shot for comparison Daylight – 500 Daylight.

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Bright colors appear brightthe dark colors are normally dark IR LED mit nm All visible colors disappear on banknote and credit card except for black and special security features Daylight – RGB Colour image. Daylight shot for comparison Daylighht – Mono8 Daylight. Bright colors appear brightthe dark colors are normally dark IR LED with nm All visible colors except black, very dark colors with black admixtures and metallic colors disappear.

IR illumination The wavelength range from approximately nm to 1 mm, i. All visible colors disappear bg banknote and credit card except for black and special security features.

All visible colors except black, very dark colors with black admixtures and metallic colors disappear.