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| | | Theconfocal-chromatic measurement system, optoNCDT2400, consists of a controller and a sensor. Polychromatic white light is focused onto the target surface by a multi-lens optical system. The lenses are arranged such that the white light is dispersed into a monochromatic light by controlled chromatic deviation. A certain distance is assigned to each wavelength by a factory calibration. Only the wavelength which is exactly focussed on the target is used for the measurement. This light reflected from the target surface is passed via a confocal aperature to the receiver which detects and processes the spectral changes. This unique measuring principle enables displacements and distances to be measured with high precision. 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. | | |
| | | Advantages Extreme high resolution Target independent measurement Tiny, constant measuring spot Compact course of beam One-sided thickness measurement of transparent materials | | |
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| | | Surface scan The extreme spatial resolution in x-axis and the submicron accuracy in the z-axis make it a perfect sensor for surface scans | | |
| | | Liquid level The confocal measurement principle facilitates measurements against reflecting surfaces (glass, mirror), as well as liquids. | | |
| | | Thickness measurement of sleeves Two synchronized sensors acquire the bottom thickness of sleeves in a double-sided layout. | | |
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