Sensors & Applications Watches & Precision Mechanics

It’s time for highest precision Be it in the production of the finest components or in the quality control of complex mechanisms, precision is absolutely crucial for watches. High-precision sensors from Micro-Epsilon provide the necessary measurement accuracy to ensure the highest standards in production, assembly and final inspection. Our sensor solutions make it possible to reliably detect even the smallest of deviations in geometry, thickness, color and surface. In this way, they support manufacturers in ensuring that their products are flawless – from smartwatches and premium watches to technically...

Air gap measurement during the fitting of watch glass Confocal chromatic sensors monitor the gap between the plate and the glass. Thanks to the 90° design, the sensors can be integrated in an extremely space-saving manner. Recommended sensors: confocalDT IFS2406/90-2.5 Contour measurement of the watch glass The contour measurement of watch glasses is performed using confocal chromatic sensors that are guided over the glass. The sensors detect curved surfaces with a resolution of up to 18 nm. Thanks to the high tilt angle, the contours can be measured with high accuracy. Recommended sensors: confocalDT...

Multi-layer thickness measurement, e.g. of coated glass, air gap measurement Micrometer-precise thickness measurement of sapphire glass The confocalDT sensors enable the thickness measurement of transparent materials. A sensor detects the material thickness with micrometer precision. The integrated multi-layer measurement allows for the thickness of multi-layered objects, such as laminated glass, to be evaluated. confocalDT Confocal sensors for displacement and thickness measurements Small measurement spot High repeatability For dynamic measurement

3D surface inspection of watch glasses Deflectometry systems are used to measure the flatness or planarity of watch glasses. They capture the flatness with just one shot. The sensor provides a 3D representation of the reflective surface, which can be used to determine the topology with micrometer precision. Sensor: reflectCONTROL sensor Surface inspection of watch glasses

High-precision thickness measurement of transparent layers White light interferometers from the IMS5200 series are used to inspect the thickness of coatings on glass and metals. This allows the thinnest layers from 1 to 100 um to be detected with high precision. Thanks to the large working range, no exact Z-axis positioning of the target is required. The multi-peak function allows up to 5 transparent layers to be measured simultaneously, which is useful, for example, when measuring the air gap when fitting the glasses on the housing. Sensor: interferoMETER IMS5200 ■ Absolute distance measurement...

3D flatness check of the main plate As the central support structure for all bearings and axes, the plate forms the basis for the entire geometry of the watch mechanism. Even the slightest unevenness can lead to tilting, increased friction and thus to running problems. The surfaceCONTROL 3D sensor captures the entire surface in a single measurement and detects deviations immediately with micrometer accuracy. This means that faulty parts can be identified at an early stage, reworking is minimized and production quality is sustainably increased. ■ 3D snapshot sensors with ultra-high precision ■...

Defect detection / quality inspection of sapphire glass QualiLENS is an inspection system that can be used to detect defects on glasses and lenses. It uses an optical technology that is based on phase shift deflectometry. The system detects deviations and anomalies in the glass surface with high accuracy and is superior to conventional image processing technologies. QualiLENS software processing uses proprietary algorithms to identify, mark and assign defects to various categories: machining defects, scratches, inclusions, bubbles, clouding and more. The system achieves a 100% detection rate...

Transmission measurement of mineral glass and sapphire glass The transmission measurement of the watch glass with color sensors allows for the exact measurement of light transmission over different wavelength ranges. This allows transparency, color characteristics and coating quality to be checked precisely. This ensures the consistent optical quality of the glasses. ■ Inline color measurement with maximum precision ■ Optimized sensor models for different surfaces, e.g. reflective, transparent, curved ■ High measuring rate, ideal for quality assurance and documentation in the production line

colorSENSOR CFO200 ■ Recognition of colors, contrasts, coatings ■ Optimized sensor models for different targets, e.g. reflective, transparent, curved ■ High measurement speed of up to 30 kHz for dynamic processes ■ Fast measurement value output of up to 500 Hz ■ Large color memory for different test batches Color inspection of hand and time elements The color test of hand and time elements is performed using colorSENSOR CFO200 color sensors and fiber-optic sensors with an extremely small measurement spot of 0.8 mm. This enables precise quality assessment of the most intricate color details on...

Sensors and systems for displacement, distance and position Sensors and measurement devices for non-contact temperature measurement Measuring and inspection systems for metal strips, plastics and rubber Optical micrometers and fiber optics, measuring and test amplifiers Color recognition sensors, LED analyzers and inline color spectrometers 3D measurement technology for dimensional testing and surface inspection More Precision Whether it is for quality assurance, predictive maintenance, process and machine monitoring, automation or R&D – sensors from Micro-Epsilon make a vital contribution to...