ifm electronic - Laser sensors

Detection of minute objects by means of a focussed laser beam.
Clearly visible red light for easy setting to the object.
Automatic switch point setting by pressing a pushbutton.
Application sensors available for special application areas.
System components available for fine adjustment.

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Introduction
Laser systems are used where detection of small objects or precise positioning is required. They are available as through-beam sensors, retro-reflective sensors or diffuse reflection sensors. Laser light consists of light waves of identical length which have a defined phase relation (coherence). This results in an important feature of laser systems, that is the almost parallel light beam. Result: Due to the small angle of divergence long ranges of up to 60 metres can be achieved. The laser spot which is also clearly visible at daylight simplifies the alignment of the system. Apart from the advantages some points have to be taken into account for the selection of the suitable optical system: compared to standard sensors the laser sensors have a reduced temperature range (-10...50 °C). In view of the small light spot and the often high ranges the system is more sensitive to vibrations than standard sensors.
The ifm laser sensors offer a useful function for easier alignment: The laser power is increased during adjustment: This leads to a particularly bright laser spot which enables safe alignment from a distance even at daylight.
Due to the small angle of divergence laser beams are focussed on a small area. The energy and power density on this area is extremely high. ifm laser sensors comply with the European standard EN60825 or the international standard IEC60825. These standards describe the operation of laser systems. ifm laser sensors are classified in the laser protection class II. Thus the laser power, also in the setting mode with increased power, is max. 1 mW. When the laser beam hits the human eye, the eyelid is instinctively closed. When hitting the unprotected eye within a time of 0.25 s the laser beam must not cause any damage.

ifm electronic
ifm electronic gmbh is one of the leading manufacturers of automation technology world-wide. More than 3,000 employees in more than 70 countries develop solutions for 80,000 customers in the manufacturing industries. By optimising technical processes in the automotive, chemical and cosmetics industries or in environmental technology and automation of buildings ifm electronic has consistently set new standards and thus ensures tomorrow's production processes.

The family-run company with headquarters in Essen started with the invention of inductive proximity sensors in 1969. The German production in Tettnang on Lake Constance has ensured brand quality right from the start. Today "efector" stands for position and fluid sensors, object recognition, diagnostic and identification systems. The brand "ecomat" is synonymous with networking and control systems. In 2007 ifm made a turnover of more than € 410 million with above-average product quality, exceptional innovations and consistent close contact to the customer.