Technical term from measurement technology. Is used for measuring processes that are used for the reliably repeatable determination and documentation of deviations of measuring systems or measuring bodies. The comparison is made in relation to other systems or objects, which are then referred to as normals or normalies. Calibration does not mean verification, conformity, adjustment […]
A clean or ultra-clean room is a special room whose equipment is designed to keep the concentration of airborne particles(aerosols) as low as possible. Such rooms are required in the semiconductor industry, for example. Here, the dust and suspended particles in the normal room air would have a negative impact on the production of integrated […]
Cloudy day lighting (or cloudy day illumination) are very diffuse incident lights that do not produce any shadows. They are well suited for the inspection of shiny and curved objects. This type of lighting includes dome lighting, tunnel lighting and coaxial lighting.
Coaxial lighting is diffuse incident light or bright field lighting. The light of an LEDsurface illumination is coupled laterally via a semi-transparent mirror into the beam path of a camera and projected onto the test object. This ensures that the test object is illuminated very evenly and without shadows. The light from the test specimen […]
Color is a sensory impression mediated by the eye and brain, which is caused by light with a wavelength between 380 and 780 nm. Visible spectrum In image processing, the use of different illumination colors creates contrasts with which an inspection task can be solved better or more efficiently. A color camera, for example, is […]
The color temperature (or light color) describes the color impression of lighting and corresponds to the temperature of a “black body” at which it emits light in the same color. The color temperature is not an indication of the temperature of the light, but describes the color impression, which ranges from extra warm white (< […]
Controllers are used for the precise current control (switching on and off) of LED lighting. Even small changes in voltage can increase the LED current and light emission so significantly that they can be destroyed in a very short time. It is therefore difficult to achieve precise lighting control via the power supply alone. A […]
Convection cooling is passive cooling without forced ventilation by mechanical fans. Heat flow is based on natural convection (the entrainment of thermal energy in a flowing medium). Heated air particles have a lower density, rise in the power supply unit and thus cause air movement. Convection (or heat flow or heat transfer) is one of […]
