Confocal chromatic displacement sensors

Micro-Epsilon Messtechnik GmbH&Co KG: The confocal chromatic measurement system, optoNCDT 2401, consists of a controller and a sensor. A fiber optical cable, which can be of almost any length, connects the two components. This system has no moving components and is therefore wear free. It can also be used in ATEX / EX environments. The system consists of a LED based controller a fiber optical cable and one of the sensor heads of the series 2400/2401 or the world first miniature sensors series 2402. This unique measuring principle enables displacements and distances to be measured with high precision and extreme spatial resolution.

Both diffuse and specular surfaces can be measured. With transparent materials a one-sided thickness measurement can be accomplished along with the distance measurement. Since the emitter and receiver are arranged in one axis, shadowing is avoided. In contrast to conventional triangulation sensors the optoNCDT 2401 system is able to measure in narrow apertures, small gaps and cavities. The series optoNCDT 2402 is also with radial beam deflection for bore hole inspection available.