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Test & Measurement White Papers
USI Universal Adaptive Profiling Measurement Mode for Superior Surface Texture Characterization
Bruker has recently released the Universal Scanning Interferometry (USI) measurement mode to enable universal measurement results on wide-ranging surfaces for ContourX white light interferometry (WLI) profilometers. USI provides fully automated, self-sensing surface texture optimized signal processing while delivering the most accurate and realistic computation of the surface topography being analyzed.
Defining and Describing Surface Error
Controlling optical component performance requires well-defined measurement processes. Analysis software can help by guiding users through the steps of the measurement process (geometry fitting, filtering, and defining parameters) and by making it...
PDH Technique with Moku:Lab’s Laser Lock Box — An FPGA-based all-in-one Solution for Laser Frequency Locking
The Pound-Drever-Hall (PDH) technique was first introduced by R.V. Pound, Ronald Drever, and John L. Hall in 1983. It is a widely used method to match the emitting optical frequency of a laser to a Fabry-Perot cavity. PDH locking uses light...
A Novel Measurement System to Aid Polished Optical Surface Manufacturing When Working with Coated Surfaces
Topography becomes more important in quality assurance for manufacturing. This regards the characterization of macro-sized to medium optics and the optimization of a manufacturing process using a coherence scanning interferometer, e.g., the...
Measuring High Power Lasers
High-power laser beams deliver a lot of power into a small, precisely controlled space. Parameters that are not controlled can unexpectedly change what the process is doing and where. The way to prevent this is to monitor the relevant parameters of...
Reducing Interference Pattern in Multimode Optical Fiber
The spectrographic imaging quality from Integral Field Units (IFUs) in astronomical imaging are limited due to Whispering Gallery Modes (WGM) in multimode optical fibers. Modifications in the production process reduces unwanted interference in...
IR Filters for Gas Analysis
Thin film filters specially designed for infrared applications ranging from environmental monitoring, thermal imaging, medical, and power distribution. We offer high transmission, narrow and wide passbands, high rejection outside the passband, and...
Advantages of Measuring Surface Roughness with White Light Interferometry
This application note discusses the use of mean roughness measurements with white light interferometry (WLI) optical profilers. Spatial filters are explained, as well as some of the normative standards requirements from ASME B46.1-2009, ISO 13565-12...
Photobiological Safety Measurements
In recent decades, advances in materials science and technology have substantially improved the quality of lighting products. LEDs in particular have become more rugged, with higher efficiencies, greater stability, and emit significantly higher...
Health and Sanitization through UV Lighting
With increased awareness and necessity for rapid disinfection methods due to the current coronavirus pandemic, ultraviolet disinfection has become a viable method to achieve it. Determining the amount of UV energy the light source emits onto the...
Automated Scratch-Dig Inspection - Advantages of Replacing Manual-visual Inspection
Worldwide a tendency can be observed to increase accuracy and quality of inspection of optical parts. More often than ever before, manufacturers explore computer-based inspection systems to gradually replace human inspectors. We describe how machine...
Impacting Health and Well Being with Precision Light Measurement, Networks, and Big Data
Precision light measurement positively impacts our efforts to improve health, comfort, and productivity. Today’s availability of advanced detectors, high-performance compute, scale-out sensor connectivity, and big data analytics can be applied to...
Plastic Sorting Using Mid-IR Linear Detector Array
This paper explains how to use MID-IR linear detector array in sorting area. High performance optical sorting systems are the main application of multielement detectors. The detector line scans elements moving on the tape and allows their...
ISO Compliance of Non-Contact, Real-Time Beam Analysis
Laser power levels used in production have risen significantly. Welding systems commonly use laser powers in the range of multiple kW. To deliver high product quality, key parameters of the laser beam must be measured regularly. Ophir has tackled...
How OFDR is Redefining Optical Component Characterization
Modern optical networks require ever higher-speeds and the associated optical and electronic systems must be smaller and less power-hungry. This need has driven major investments in new component technologies that leverage semiconductor technology,...
Saving Vision With Light: Five Startup Technologies That Are Revolutionizing Eye Care
Early detection is critical for treating damage and diseases of the eye. Advances in the size, sensitivity, and price of optical components are enabling a new generation of compact, powerful, and affordable ophthalmological imaging tools. These...
How to Specify a Custom Designed Instrument
While it can seem daunting to design a custom instrument from scratch, a well-organized preparation effort and a knowledgeable industrial partner can simplify the process and, more important, greatly reduce its budgetary cost and time investment....
Custom vs. Off-the-Shelf Solutions: Are you dreaming big enough?
Custom positioning solutions provide more leeway for innovation, and at far less cost, than many customers realize. Irrespective of whether the goal is a one-off solution or multiple units for a wider industrial instrument, an evaluation of standard...
Hexapod Advancements: Alignment and Industrial Control Applications
1) Hexapod parallel kinematics together with novel controllers and algorithms allow for faster coupling optimization between (fiber) optical devices, across multiple channels. Many industries can achieve significant process savings, including...
Making Color Images – How Bayer Filters Work
Bayer filters are the most popular type of color filter array used by camera manufacturers to produce color images. This paper will describe how we perceive color, how a Bayer filter utilizes this information to detect colors, the common artifacts...
Industrial Laser Measurement Systems: Best Practices
When discussing laser applications, regardless of how the laser is used, it is imperative to understand how the laser is interacting with the material being processed. This article will detail why a laser’s performance is important for industrial...
Schlieren and Shadowgraph Imaging Techniques
Schlieren and related techniques are used in aerodynamics, ballistics, and fluid dynamics studies to aid researchers in accentuating subtle changes to the medium being studied due to pressure, density, and temperature inhomogeneities. This paper...
Building a DIY Atomic Force Microscope
Atomic force microscopes (AFM) are often seen as out of reach for many scientists with limited budgets. But they are useful and versatile tools for characterizing surfaces, mapping out morphology, and studying the behavior of tiny structures that...
Close Is Not Close Enough: Micropositioners' Role In Nanopositioning
When working at the nanoscale, every input has seismic impact on the ability to view, position, or manipulate the object of their attention. Whether the application is in single-molecule spectroscopy, optical trapping, super-resolution microscopy,...
Cassegrain Telescope with Fold Mirror
The following document will cover the analysis of a Cassegrain Telescope system. The polarization properties of the system will be measured with the Polaris-M software and the effects on imaging will be discussed. All plots and data have been...
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April 2024
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