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

Q: What is the highest accuracy you can reach with your sensor using a customer lens?

A: There really is no real limitation, it all depends on the magnification and quality of the lens. Optimet has many optional lenses which can be used with their sensors and are standard Optimet products. When using a customer designed microscope lens the magnification is much larger and results a much higher accuracy which can reach the sub-micron scale.

Q: Can the Autofocus ability be used also with specular surfaces?

A: Yes. The Autofocus ability is unique to all Optimet point sensors and can be used on specular materials using the CP-3R sensor or diffusive materials using the CP-10 or CP-20 sensors.

Q: What is the maximum possible distance between the sensor and the objective lens?

A: We have never measured the maximum distance possible, but we do have customers using it at >2 meters away so there is no reason to think the limitation is anywhere in that area.

Q: So the SMART sensor technology really doesn’t require any SW installation at all??

A: Correct, no SW installation at all. It’s all web based and all you need is internet chrome browser.

Q: How can I get the look and feel of the SMART sensor capabilities?

A: Optimet’s website has a SMART sensor simulator for that purpose exactly. You can upload a profile from our profile library and just start measuring by defining features you want to measure. Since the SMART sensor Software is all web-based, the screen, features, results and reports will look exactly the same as in the simulator so by the time you receive the actual SMART sensor you’re already a pro!

The SMART sensor’s Live measurement screen. Measures many features at once and generates a pass/fail determination

Q: What is the correct sensor to use if I want to examine the bottom surface of laser drilled holes which are about 100um in diameter and 300um deep? Standard triangulation based sensors have too much shadowing affect and can’t see most of the bottom surface.

A: Optimet sensors can reach an aspect ratio of 1:5 (Diameter: Depth) due to its collinear technology. If the only need is to scan the bottom surface which is nearly flat and measure its curvature and inconsistences we recommend the CP-10HD with 25mm lens sensor which has very high accuracies along with large angular coverage so there is no shadowing at the bottom surface of the hole.

Q: Can Optimet’s Auto Focus technique speed up the focusing time in microscope vision systems?

A: Yes. Conventional vision Autofocus systems need to take images at various points along the vertical axis and then use image analysis SW to calculate the location of the best focus and move the stage back to that location. Optimet sensors work very differently; The large measurement range enables to calculate the best focal point after only a single measurement (measurement rate is up to 20,000 points/sec) and then sends feedback to the stage to move to that exact location.

Autofocus using Optimet’s point sensor, Can be used for vision or laser Autofocus

Q: Does the laser scribing wavelength affect the distance measurement in any way?

A: No, since Optimet sensors use a red laser diode with wavelength of  658nm (±2nm) and only that specific wavelength can be detected by Optimet sensors, while laser scribing machines usually use other wavelengths like YAG or CO2 lasers.

Q: Can you scan the entire profile of a 100mm pipe which has a diameter of only 50mm?

A: Yes. Optimet’s unique collinearity ability enables using additional optical components such as mirror and prisms to fold the laser beam and even locate the objective lens at a distance from the sensor itself. This enables creating a small tube (in this case a 25mm diameter tube) and put the objective lens at the end of the tube and using a folding mirror to scan the pipe’s profile. The tube can be even 100mm long, so in fact when putting the sensor (or pipe) on a 100mm linear stage the entire pipe can be scanned quickly and accurately.

Q: Can the SMART sensor send a pass/fail output to a visible light (traffic light)?

A: Yes, the SMART sensor has digital output enabling to connect it to a red/green traffic light for visible Go/NoGo notice (will require a digital PLC).

Q: Can the SMART sensor results be sent over Wi-Fi?

A: The SMART sensor can give a digital Go/NoGo output using Ethernet. An Ethernet to WiFi converter can be used to receive the results over WiFi.

Q: How can I choose the appropriate sensor and lens to use for my application?

A: You can look on our website in the Application Finder section and search for an application similar to the one you need which we got the permission to publish. If you can’t find it you can always use our “Send us a sample” inquiry form, and we will be glad to generate a measurement report on the spec you need for proof of concept and recommend the best sensor configuration for your application.

Q: what kind of technical support do you provide?

A: We provide lots of technical and sales support to our customers, distributors and integrators starting from a full measurement report and all the way throughout the integration process. We have lots of experience and knowledge of integration processes we gathered along the years that can help you ease the integration. Most of the time the quickest way is to just remotely log on to the customers computer and see with the customer what the best scanning parameters are for producing best results. If needed, we can also send an engineer for on-site integration process.

Q: How can I get an evaluation kit for proof of concept tests?

A: Optimet offers an evaluation kit with a SMART sensor for customer demos and proof of concept tests. The evaluation kit is free of charge and is provided as a customer loan for three weeks which is more than enough to generate any measurements needed. The learning time to master the software and receive measurement results is extremely quick and very easy; it takes less than one day!

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