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Practical Optical Dimensional Metrology provides basic explanations of the operation and application of the most common methods in the field and in commercial use.
The first half of the book presents a working knowledge of the mechanism and limitations of optical dimensional measurement methods that use: light level changes, two-dimensional imaging, triangulation, structured-light patterns, interference patterns, optical focus, light characteristics such as polarization, and hybrid methods with mechanical or other measurement tools. The book concludes with a series of manufacturing application examples that look at measurements from the centimeter range down to the nanometer range.
Preface 1 Introduction to Metrology 1. Preface This book is based on 40 years of working with, evaluating, testing, using, and learning about a wide range of optical dimensional metrology techniques and products.
The applications have ranged from consumer products such as electronics to measuring gears and sheet metal in the automotive industry to measuring airfoils from turbine engines. Over this time, I needed to understand both what a technique can and cannot measure, as well as which applications would simply be easier or less expensive to measure by some other means. I have found that for many applications, the established theory and calculations indicate that one optical metrology method or another is suitable.
However, for practical reasons of environment, measurement restrictions, or commercial availability, this method may not be a viable solution without more work or development. I have tried to capture the practical knowledge gained from hands-on experience that is useful to others who later attempt to address a similar measurement need. In many cases, the insights and diagrams were the result of a colleague coming to my office to ask how to do some measurement and the resulting discussion on a white board.
There is a lot of theory, math, and science behind the way that many of these optical measurement methods work, all of which has been well covered in the publications referenced in this book. The objective of this book is not to make the reader an expert on metrology, optics, or any of these methods, but rather to impart the practical knowledge that enables the successful use of optical metrology tools to address a measurement need in production manufacturing. I encourage those readers interested in more in-depth analysis of how these methods work to read the many excellent references cited at the end of each chapter.
This book is organized into two primary sections. The first six chapters provide basic, working explanations of how each of the optical measurement methods works. The chapters are organized according to the basic mechanisms of measurement, including light intensity changes, two-dimensional imaging, triangulation, structured-light patterns, interference patterns, optical focus, light characteristics such as polarization, and hybrid methods with mechanical or other measurement tools.
The basic explanations presented do not necessarily include all of the details needed to build your own product or all of the variations in the way the method has been employed in the past, but rather represent the core operating principles of each method.
With these explanations, I include some insights into the limitations as well as application mistakes to avoid. Chapter 7 begins the second half of the book, which looks at optical metrology methods from the perspective of real applications, working from relatively course measurements on the centimeter scale down to very fine measurements on the nanometer scale. I summarize the key application assumptions for each measurement range in a table, ranking the relative capability of each optical dimensional measurement method to address these application assumptions on a practical basis based on my experience.
Thus, Chapter 7 is a summary chapter to set the stage for the discussion of real-world applications. The remaining five chapters pull information from real application examples that I have published over the years to illustrate the considerations that my colleagues and I have evaluated in finding a solution to a production measurement need.
The applications were chosen to be representative of the measurement range from coarse to fine discussed in Chapter 7, showing what worked and what did not work based on experiments and extended qualification tests. These example applications are by no means exclusive of the possible uses of the optical measurement technologies discussed.
Even small application changes might change the outcome of the evaluations. The evaluation process shown in these chapters is intended to help guide users in their own evaluations. New improvements are continuously emerging for any high-technology tool, and optical metrology is no exception. My experience suggests that the time period between the development of a new method or a variation to an existing method in the metrology field and its commercial use can be 10 to 20 years.
Metrology tools such as gage blocks, calipers, electronic gages, and coordinate measurement machines are all proven and known measurement tools that have been around for a long time and will continue to be used for some time to come. My hope is that this book will help measurement system users find those applications where optical metrology can help achieve the speed or another performance parameter that will meet their needs and perhaps advance the state of manufacturing.
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Research Papers OMC has published papers in academic journals or conference proceedings on a variety of topics such as: Single point optical triangulation , Photogrammetric systems , Photogrammetric targets , Subpixel target image location techniques , Camera calibration , Correspondence , Digital Signal Processing , Real-time 3-D measurement , Computer vision. PDF versions of many of these papers can be downloaded. The appropriate reference for each paper is on the last page. Clarke, T. Non-contact measurement provides six of the best.
Once production of your article has started, you can track the status of your article via Track Your Accepted Article. Help expand a public dataset of research that support the SDGs. Optics and Lasers in Engineering aims at providing an international forum for the interchange of information on the development of optical techniques and laser technology in engineering. Emphasis is placed on contributions targeted at the practical use of methods and devices, the development and enhancement
Practical Optical Dimensional Metrology provides basic explanations of the operation and application of the most common methods in the field and in commercial use. The first half of the book presents a working knowledge of the mechanism and limitations of optical dimensional measurement methods that use: light level changes, two-dimensional imaging, triangulation, structured-light patterns, interference patterns, optical focus, light characteristics such as polarization, and hybrid methods with mechanical or other measurement tools. The book concludes with a series of manufacturing application examples that look at measurements from the centimeter range down to the nanometer range. Preface 1 Introduction to Metrology 1. Preface This book is based on 40 years of working with, evaluating, testing, using, and learning about a wide range of optical dimensional metrology techniques and products.
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Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Contactless measuring techniques are becoming increasingly important for industrial applications. The use of a laser, solid-state detector arrays and powerful small computers leads to a very efficient fringe analysis in holography as well as in Moire and speckle techniques. Due to the computer analysis, much more information can be extracted from interferograms, leading to higher sensitivities and accuracies. View via Publisher.
Choose semester and course offering to see information from the correct course syllabus and course offering. General metrology and error analysis, photometry, optical detectors, holographic metrology, telecentric systems. With the previous courses in optics and waves as a background, the goal in this course is to specialize within chosen parts in modern optical physics, with consideration of the special aspects in metrological applications within industry and research. Furthermore, the goal is to establish a personal contact between the student and the labour market for Masters of Engineering specializing in optics. Recommended previous knowledge: SK Optical physics, 3 credits. If the course is discontinued, students may request to be examined during the following two academic years.
Optical measurements techniques and applications [Book Reviews]. February ; IEEE Electrical Insulation Magazine 16(1) DOI.Reply