Author Archives: Shmulik Barzilay, International Sales manager, Ophir Optronics Solutions

3D applications in the defense market

Whether it is for Reverse engineering, additive manufacturing or 3D printing, the defense industry is using more and more non-contact sensors for high accuracy measurements. Air force, navy and army specialist are using sensors daily for a variety of applications such as 3D printed parts qualification and spare parts replacement, especially in distant army bases or submarines which stay months at sea. This allows them to produce parts fast and accurately, easily shortening the supply chain procedure. Optimet sensors which have the widest angular coverage in the market (170 deg) have an advantage considering that many of those parts have difficult geometric shape and the ability to cover sharp angles is critical.

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Automotive parts defects detection using non-contact sensors

The automotive world is one of the largest developing markets in the world. This industry embraces new technologies both in-line and off-line quality control of production line. Automotive parts are scanned with a variety of metrology tools, different laser sensor technologies and using CMM, all using robots that works 24/7. In this blog I illustrate an in-line defect detection task, where speed is an important issue but exact part measurement is not.

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Thickness measurement using Conoscopic Holography non-contact laser sensors

Using non-contact laser sensors can provide the end users a variety of parameters to measure and characterize surface features such as flatness, roughness, and displacement. One dominant parameter end users want to measure is the thickness of metal, plastic, wood, and glass. In this blog we discuss thickness measurement of diffusive materials. Another blog will discuss thickness measurement of glass and transparent materials, which is more challenging and needs to consider material coefficients.

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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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High Speed Tire & Rubber Inspection

conopoint tire scan

Tire manufacturers need to inspect their tire grooves with its sharp angles and hard geometry. High quality tires are usually made out of black rubber which is more challenging to measure due to its low reflection signal. The problem becomes even more challenging when there are paint marks on the tire which are a different color, with a different back signal. The Optimet sensors provide both SNR parameter and also “Total”, which is the amount of light used by the detector on every surface. Both in R&D sections and on the manufacturing floor, engineers are using sensors to monitor the tire erosion, and to better understand the effects of sipes geometry on the tire’s performance.

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