Confocal sensor systems for displacement, distance, position and thickness
Ideal for thickness measurement of glass
Optical sensors measure finest structures and details
Comprehensive sensor range
Confocal chromatic sensors provide the latest modern technology for displacement, distance, position and thickness measurements combined with maximum precision and high speed. Especially when measuring on reflecting and shiny targets, confocal chromatic sensors provide high accuracy whereas laser sensors are overdriven due to the high light intensity. This is a major advantage in a ‘live’ production process, where tactile measurement technology is operating at its limits, especially if the target is located in a difficult-to-access area.
Micro-Epsilon's confocal chromatic sensors and controllers provide unsurpassed advantages in terms of measuring rate, sensitivity and precise thickness measurement. Different sensor models and controller interfaces open versatile fields of application, e.g. in the semiconductor industry, glass industry, medical engineering and plastics production.
In contrast to laser-optical sensors, confocal chromatic sensors are almost independent of the light reflected by the surface. Therefore, the distance can be measured from dark and mat surfaces as well as from shiny and reflecting surfaces.
The confocal chromatic measuring principle enables thickness measurements of transparent materials such as glass. The thickness is detected to micrometer accuracy using just one single sensor which uses the reflections of the front and rear side of the material. These reflections generate peaks on the CCD array based on which the corresponding distance and thickness are calculated. The evaluation of up to 6 peaks enables measurements of multi-layer objects such as laminated glass, where the suitable material can be selected for each layer.
Unlike other measuring systems, confocal chromatic sensors are basically suitable for use in vacuum, as the sensor consists of passive components. Therefore, the sensor does not emanate any heat. However, all components must be suitable for use in vacuum. In a vacuum, especially in a high vacuum (HV) and an ultra-high vacuum (UHV), no conventional materials must be used which might contaminate the environment by outgassing. Particularly for use in vacuum applications, Micro-Epsilon offers confocal chromatic sensors, cables and accessories which can be used according to their respective specification.
The confocalDT controllers provide an excellent signal-to-noise ratio enabling measurements at high accuracy. They are among the fastest controllers worldwide and are frequently used for dynamic monitoring tasks. The fast surface compensation regulates the exposure cycles in order to achieve high signal stability which is particularly favorable when measuring surfaces with varying reflection characteristics. Interfaces are RS422, Ethernet or EtherCAT and AnalogOut.
Due to a user-friendly web interface, the entire configuration process of controller and sensors is carried out without using any additional software. The web interface can be accessed via Ethernet and provides set up and configuration options. Materials are stored in an expandable materials database. Data output is via Ethernet, EtherCAT, RS422 or analog output.