Optical measurement with the highest resolution

Werth Raster Scanning HD vs. the largest camera in the world

The patented Raster Scanning HD operating mode enables the fast, complete and accurate capture of large areas of workpieces in a single overall image. To display a corresponding image completely at full resolution, 2,400 4K monitors would be required. How do you think the largest camera in the world at the Vera C. Rubin Observatory, Chile, by comparison?

With Raster Scanning HD, an overall image with a resolution of up to 20,000 megapixels is automatically created. The subsequent measurement “in the image” is extremely fast and can be further accelerated by connecting several computers in parallel. This makes the process many times faster than conventional measurement methods.

By way of comparison: the largest camera in the world was designed for astronomical research, with a focus on dark matter and dark energy. It consists of 189 chips, each with 16 megapixels, and thus achieves a resolution of 3,200 megapixels.

The VideoCheck^® series provides the world’s most accurate multisensor coordinate measuring machines. The VideoCheck^® HA model is specially designed for the measurement of precision workpieces with tolerances in the micrometer range. Raster Scanning HD P is ideal for the measurement of workpieces in the precision engineering, optics and electronics industries. It can also be adapted to the international safety standards of the SEMI industry association with TÜV certification.

Werth TGV Measurement Concept

Measure 1 million of the smallest bores in less than 15 minutes

Raster Scanning HD enables previously unattainable measuring speeds in the measurement of through glass vias (TGV). The Werth multisensor measurement concept makes it possible to completely capture the various geometrical characteristics.

The Werth multisensor measuring concept is ideal for measuring workpieces in the electronics, precision engineering and optics industries. One example is the measurement of perforated glass plates that are manufactured in a complete panel measuring approx. 600 mm × 600 mm with up to 1 million extremely small holes (through glass vias – TGV). The individual samples or patterns are then separated, metallized and used for advanced packaging, i.e. the stacking of circuits in chip manufacturing. A 100% measurement of the position, diameter (≤ 100 µm), mold and orientation is required at the bores. In addition, the flatness and thickness of the glass plate must be determined. The metrological challenges lie in the necessary structural resolution for capturing the bore diameter and mold with a very large number of bores, for the capture of which a considerably higher measuring speed is required than with conventional image processing.

The Werth VideoCheck^® HA is specially designed for measuring precision workpieces with tolerances in the micrometer range. The patented Raster Scanning HD operating mode enables the automatic capture of large areas with small geometric elements at a high level of accuracy, thus uniquely meeting the requirements in terms of resolution and measuring speed. An overall image with a resolution of up to 20,000 megapixels is created. Position, diameter and mold for up to 1 million bores can be measured and evaluated in series in less than 15 minutes. This makes Raster Scanning HD P significantly faster than conventional measurement methods.

Werth offers the world’s largest selection of sensors, enabling complete measurements at previously unattainable speeds. The patented Werth Fiber Probe^® is specially designed for measuring form error at different heights of the bore and is considered the world’s most successful micro-probe with a glass stylus tip (diameter ≥ 20 µm). In addition, the Chromatic Focus Point Sensor is used to measure the thickness and flatness of the glass plates (glass thickness ≥ 200 µm). The distance is determined by the color of the reflected light, which also enables measurements on reflective and transparent surfaces as well as coating thickness measurements.

Picture: Werth Fiber Probe^® with 20 µm stylus tip for measurement of 40 µm bores