Important for colour applications: even white LEDs change their colour temperature over their service life.By using a flash controller, the intensity can be increased by several hundred per cent.A total failure is very rare, the aging process of LEDs is almost linear. The service life of the LED is the age at which the LED emits only 50 % of its initial brightness.Frequent switching (per inspection) does not harm the lighting, but extremely prolongs the service life.Ideally use a flash controller / current limiter in order to keep the LED cool. The brightness depends on the current flow and the temperature. The generated heat should be dissipated by means of air supply, thermoconductive mounting or useful triggering. LEDs age much faster in case of strong warming than with sufficient cooling.By means of a flash controller, however, short intense current pulses (1 per inspection) can be used to overflash to the triple to sixfold quantity in order to generate a multiple of the luminous power.

The LED would be damaged in continuous operation immediately. The energy yield can be increased even further if you increase the amperage over 100% of the permissible value. A consumption of 5 - 25 watts is typical for an LED illumination. The luminous intensity grows proportionally to the amperage, which is used in industrial machine vision in order to generate high quantities of light by means of high-power LEDs.

Typically optical elements bundle the emitted light beam to a defined cone of light. White light is mixed from the direct emission of blue light and the fluorescence of yellow-green and red light. Only by means of a trick, white light is produced: The light of a 100% blue-emitting LED stimulates yellow fluorescent dyes, which are arranged around the light-emitting crystal. White LEDs, too, primary only generate monochromatic light. As opposed to an incandescent lamp, the light always has one particular colour. The light generated in this way is monochromatic due to the exactly defined energy amounts of the semiconductor material. Since the upper layer is very thin, the light flash can emerge from the material. When applying a voltage, an excess of charges is generated in the junction, which recombine with holes in the p-doped material and release their energy there. The LED consists of a semiconductor material that is n-doped, on top there is a very thin p-doped layer which has a lack of charge carriers. Mixed crystals such as gallium arsenide (GaAs), gallium arsenide phosphide (GaAsP), indium gallium nitride (InGaN), etc. The energy and colour of generated light is determined by the semi-conductor material used and its doping. The abbreviation LED stands for 'light-emitting diode'.

due to the small size, many different lamp designs and shapes are possible to realise different lighting techniquesĮlectroluminescent diodes work like semiconductor diodes which generate light in forward direction.

applicable in various colours, not only white.

well switchable or flashable to increase the service life or output.

high shock and vibration resistance in industrial use.

smallest dimensions, directional light due to the lens optics of the housing.

little premature failure by means of a cluster of many LEDs, the failure of a single one is uncritical.

extremely long service life of 30,000 to 100,000 hours.

low power consumption, thus low heat generation.

Illuminate meaning