Category : technology

Control 2017 Q&A summary


At Control 2017 trade show Optimet presented its unique technology and applications, the ConoPoint-10 SMART Sensor with its built-in feature library, and Autofocus for material processing Systems. The demos created much interest and excitement.

We gather together some questions we were asked at OPTIMET’s booth:

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How to Ensure Your CMP Roughness Pad Is Optimal and Extend Its Lifetime

In the semiconductor and optics world there is a very important process known as CMP – Chemical Mechanical Planarization. One of the key players in this process is the roughness pad (A.K.A polishing pad) which is used in the following way:

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When Should I Use an HD Sensor?

When choosing an optical displacement sensor for 2D or 3D scans there are many parameters which need to be taken into account for best results. If you approach an optical distance sensor distributor or manufacturer for a solution to your problem, he will ask you two main questions:

  1. What type of material do you need to scan?
  2. What level of accuracy is needed?
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The Best Way to Scan Coin Reliefs for Minting Perfect Coins

The accuracy of a coin is completely dependent on how well the reliefs or molds are created.

If this isn’t done just right, you risk:

  • Poor quality coins
  • Coins that are not all identical
  • Enabling counterfeiting

Clearly official mints are under a lot of pressure to create measured and traceable mints.

Measuring Coins and Minting Reliefs

Here’s how to they turn a coin relief into digital data.

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The Best Way to Keep Your Laser Focused on its Work Piece

Take laser marking, for example.

If your laser isn’t properly focused on the work piece, the marking will be the wrong shade or even completely ineffective.

However, keeping your laser in the correct focus is easier said than done.  For instance, if the work piece isn’t totally flat the laser must be programmed to a different z-distance all along the work piece.

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Electroplating: How to Save Time and Increase Your Yield

The electroplating process is costly in both raw materials and time investment.
On top of that, the yield is quite low: a 30% yield is typical.
We used Optimet sensors to both increase the yield and save hours in production.

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Optimet Innovations at Control Stuttgart 2016


This year Optimet™ introduces ConoLine-100, non-contact laser line distance sensor for measuring complex geometries & undercuts at Control 2016.

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Diffusive Lenses Radii Measurement

Diffusive Lenses Radii Measurement

One of the challenges of the optical manufacturer is measuring a lens curvature and its radius. Producing a lens has a long process from the raw material stage until the final product is created, which is polished and curved, either spherical or aspherical.

Measuring a polished and transparent flat lens is possible, albeit challenging. Measuring a polished and transparent lens which is curved is even more challenging since the signal back-reflection has to go inside the detector in order to get a measurement. The angular coverage of a laser sensor over glass is very limited and stands over a few degrees only.
Along the lens manufacturing process there is a stage where the lens is still diffusive after its grinding, and before polished. Such condition is perfectly suitable for measuring by a non-contact laser sensor. Other technologies which are also used today are manual spherometer and a touch probe. Both are relatively slow process and a non-contact sensor can make the measurement much faster.

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Screen Scratch Inspection

Screen Scratches Inspection

Nowadays a lot of glass screen manufacturers have to monitor their process constantly. Among the different measurements are glass thickness, glass coating thickness and scratch inspection.

Many products such as computer touch screens, phone screens and LCDs have those needs. Most of the tests are done today in Far-East countries such as Korea, China and Japan, but not exclusively. Many of them use vision equipment in order to cover large areas, and combine this with high-resolution laser sensors over local detected “suspicious areas.”

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Optical Measurement of Narrow Holes

Optical Measurement of Narrow Holes

Measuring deep, narrow holes with a ratio of 1:5 (diameter: height) has always been a difficult and largely unsolved problem. It gets worse when we consider that not only the bottom surface needs to be scanned, but also the side walls which are characterized with steep angles that sometimes exceed 75°. This often causes multiple reflections from the side walls, which ruin the signal.

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