Technical Articles

Radiant Vision Systems has published these technical articles:

(Electrical and Electronic Test Equipment)
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An imaging system's color measurement accuracy is highly dependent on its internal color filter system. Two kinds of filters are common for color measurement applications of displays-Bayer Pattern...
(Inspection Tools and Instruments)
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Perhaps no single component is as critical to the usability and perceived quality of today's smartphones, tablets, and other electronics as their displays. The use of imaging colorimeter systems and...
(Inspection Tools and Instruments)
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Selecting the right CCD-based imaging colorimeter for an inspection application requires understanding a few basic trade-offs in imaging colorimeter architecture. Proper selection of CCD, control...
(Machine Vision Equipment)
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Replacing human inspectors with imaging colorimeters is one way manufacturers can ensure improved, consistent quality in the displays leaving the factory. Imaging colorimeters replicate human visual...
(Inspection Tools and Instruments)
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With technological advances, auto manufacturers are tasked with meeting ever-evolving regulations and industry standards for the safety and performance of virtually every element of a vehicle. To help...
(Machine Vision Equipment)
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Are you facing a tough visual inspection challenge with your devices? Advanced vision solutions leverage photometry-based imaging systems to apply higher resolution, dynamic range, and signal-to-noise...
(Automotive Equipment and Products)
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Head-up display (HUD) technology is one of the largest growth areas in the automotive market, with a key focus on increased passenger safety through improved vehicle operations and operator awareness....
(Inspection Tools and Instruments)
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With the excitement surrounding the emergence of LED lighting and displays it is becoming increasingly important to be able to measure the performance of LEDs and LED-based systems in accurate and...
(Electrical and Electronic Test Equipment)
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Learn how one company is helping automakers connect people with their cars, using Radient colorimeters to support the development of illuminated USB connectivity modules. With the ProMetric® I...
(Inspection Tools and Instruments)
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This paper discusses the challenges of near-to-eye display (NED) measurement to ensure the quality of devices such as virtual (VR), augmented (AR), and mixed reality (MR) headsets. It introduces...
(Inspection Tools and Instruments)
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Radiant Vision Systems has developed a solution to measure near-IR light emissions: the Near-Infrared (NIR) Intensity Lens. This February, the editors at New Equipment Digest interviewed Jens Jensen,...
(Inspection Tools and Instruments)
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Human visual perception and judgment is the standard when inspecting parts for lowcontrast, subtle, and unpredictable defects. In industries like consumer electronics, aerospace, and automotive...
(Inspection Tools and Instruments)
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The application of imaging colorimeters improves OLED and microLED display production by ensuring visual quality of displays-measuring brightness and color uniformity at the pixel and subpixel level...
(Inspection Tools and Instruments)
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The need to support higher production quantities for display-based devices, together with escalating consumer demands for quality and competitive pressure, requires a metrology system that can provide...
(Inspection Tools and Instruments)
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Perhaps no single component is as critical to the usability and perceived quality of today's smartphones, tablets, and other electronics as their displays. Flat panel displays (FPDs) serve as the...
(Video Cameras and Accessories)
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So, you're looking for an imaging system and you've just been pitched an 80-megapixel camera with a small price tag... Here are a couple of things you should know before buying inSo, you're looking...
(Inspection Tools and Instruments)
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Luminator Technology Group is a family of brands that manufacture passenger information signs, lighting, and display solutions for bus, rail, and aerospace industries. Based in Plano, Texas, Luminator...
(Quality Assurance, Test and Compliance Software)
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This paper describes precise geometric, optical, and software parameters of a sparkle measurement method, which has been proven to match human visual perception of display quality with repeatable...
(Inspection Tools and Instruments)
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Human vision and perception are the ultimate determinants of display quality, however human judgment is variable, making it difficult to define and apply quantitatively in research or production...
(Inspection Tools and Instruments)
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Transparent displays? Flexible and foldable phones? Stick-on displays? These may sound like the displays of the future, but already Organic Light Emitting Diodes (OLEDs) are providing the foundation...
(Inspection Tools and Instruments)
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Head-up diplays (HUDs) are becoming more common in both automobiles and airplanes, helping to increase safety and reduce distractions for drivers and pilots. In aviation, HUDs have been used for...
(Inspection Tools and Instruments)
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Engineers have been making big strides in recent years to apply quantum discoveries and nanotechnologies to areas such as computing, sensing, cryptology, metrology, and imaging. If you've spent much...
(Optoelectronics)
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Resolution and dynamic range are two important specifications to be considered when evaluating the capabilities of an imaging colorimeter, yet they are easily misconstrued. The common assumption is...
(Machine Vision Equipment)
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Customers of today's consumer electronics devices expect a flawless product out of the box. Scratched, dented, and otherwise imperfect products can result in costly returns and warranty claims. Worse,...
(Inspection Tools and Instruments)
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Precision measurement of luminance and chromaticity in information displays, light sources, or other light emitting or reflecting materials requires careful consideration of application requirements...
(Quality Assurance, Test and Compliance Software)
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In December 2018, Radiant released a new software module (a package of application-specific software tests and parameters from our TrueTest™ Software) that can evaluate all visual aspects of HUD...
(Quality Assurance, Test and Compliance Software)
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The Radiant Vision Systems solution for OLED inspection and correction helps manufacturers of OLED devices improve product quality and yield. A ProMetric® imaging colorimeter or photometer...
(Quality Assurance, Test and Compliance Software)
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Photometry-based assembly verification performs better than typical machine vision or human inspectors when it comes to catching subtle defects in complex electromechanical assemblies, helping...
(Quality Assurance, Test and Compliance Software)
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Radiant TrueTest Software offers several advantages for testing to the DFF (German Flat Panel Display Forum) Black Mura standard. Read this technical note for a method that automates testing to Black...
(Machine Vision Equipment)
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Traditional machine vision systems are sufficient for many types of inspection tasks, but they aren't effective for high-precision, low-contrast, and challenging assembly verification tasks. When...
(Machine Vision Equipment)
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For high-precision, highly-detailed, complex, or low-contrast assembly inspection tasks, Radiant's INSPECT.assembly solution is more accurate than human vision, and offers the speed, consistency, and...
(Quality Assurance, Test and Compliance Software)
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The automotive industry is one of the most regulated industries in the world. In order to keep up with the increasingly strict safety standards, manufacturers are in need of equipment with higher...
(Inspection Tools and Instruments)
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Manufacturers of flat panel displays, illuminated keyboards, and LED lighting products need accurate, repeatable, and easy-to-use light and color measurement solutions to ensure product quality,...
(Inspection Tools and Instruments)
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As the name would imply, a miniLED is small-but not as small as a microLED (µLED). While there are no official definitions, microLEDs are typically less than 50 micrometers (µm) square, with most...
(Inspection Tools and Instruments)
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Luminance, illuminance, luminous flux, intensity, brightness...how do we describe the qualities and brightness of light? We explain and discuss the spectrum of electromagnetic waves, including both...
(Inspection Tools and Instruments)
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Although displays have improved the ease with which we interface with devices, the proliferation of displays into all areas of life provides a unique challenge. We are no longer tethered to stationary...
(Quality Assurance, Test and Compliance Software)
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Radiant Product Manager Shannon Roberts demonstrates just a few of the different tests and features available for backlit symbol testing in our software packages....
(Quality Assurance, Test and Compliance Software)
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When it comes to inspecting the accuracy and uniformity of light-emitting symbols on an instrument panel, manufacturers are faced with a small quality control nightmare. Is it possible to ensure the...
(Inspection Tools and Instruments)
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Imaging systems rely on sensors to accurately interpret light as photometric data and enable evaluation of displays. This paper discusses properties of today's high-resolution sensors used for...
(Machine Vision Equipment)
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Today's electronics consumers expect a flawless device right out of the box. Scratches, dents, smudges or other imperfections can damage your brand's reputation or result in costly returns....
(Machine Vision Equipment)
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Advanced imaging solutions-such as scientific-grade CCD-based systems-offer the ability to inspect low-contrast regions in extreme detail for detection and classification of the subtlest variabilities...
(Quality Assurance, Test and Compliance Software)
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The ultimate measure of display's performance is how it appears to a human viewer. While all of the typical electronic display metrics-ppi, refresh rate, luminance, pixel pitch, etc.-are informative,...
(Inspection Tools and Instruments)
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From lasers and holograms to electron microscopes and contact lenses, some of the most significant technologies in everyday use have been made possible by aspects of optical science. New research and...
(Machine Vision Equipment)
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Todays consumers expect the highest quality from devices like smartphones, televisions and laptops-and not only for diplay screens the but for keyboards. Manufacturers of laptops and keyboards need to...
(Inspection Tools and Instruments)
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Instrument clusters, symbols (tell-tales), and indicators on the dashboard of an automobile are crucial for the safety and performance of the vehicle. Learn about industry standards and regulations...
(Quality Assurance, Test and Compliance Software)
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Automobiles are getting smarter with new driver assistance systems that help us back up, park, avoid collisions, and more. Automotive headlights are also getting smarter, as sensor systems combine...
(Inspection Tools and Instruments)
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Human vision is one of the marvels of the natural world-we can see detail in high resolution at near and far distances with accurate depth perception. We also have a high sensitivity to color across...
(Inspection Tools and Instruments)
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Emissive displays, such as those made from OLED or microLED technology, can present quality control challenges. Because each individual LED/microLED is its own emitter, these displays can be subject...
(Inspection Tools and Instruments)
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Increasing digitization and other medical trends have intersected with the boom in consumer display devices to create a new landscape for medical display devices in both clinical settings and for...
(Inspection Tools and Instruments)
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Head-up displays (HUDs) are starting to become a feature of new automobile models. Current 2D HUD technology projects flat images on a fixed viewing field, but soon a new generation of AR-enabled HUD...
(Inspection Tools and Instruments)
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Microdisplays using liquid crystal on silicon (LCoS) are emerging for use in AR/VR devices, head-up-displays (HUDs), and head-mounted displays (HMDs), along with many other applications of LCoS, a...
(Inspection Tools and Instruments)
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As display resolutions increase, imaging systems are challenged to continue to provide accurate pixel-level measurements while applying increasingly limited relative imaging resolution during...
(Quality Assurance, Test and Compliance Software)
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To measure pixel-dense displays and individual emissive elements, Radiant provides a specially designed lens option: our Microscope Lens. Designed for high-resolution imaging of small light source and...
(Inspection Tools and Instruments)
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AR/VR/MR displays are viewed just 1 - 3 inches from the surface of the eye, meaning any defects or lack of clarity in the display image can be glaringly obvious. Additionally, display performance...
(Inspection Tools and Instruments)
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As emissive display types such as OLED and microLED emerge into the market place, imaging colorimeters provide the most effective solution for quality inspection, enabling display makers to measure...
(Inspection Tools and Instruments)
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Scientific methods allow us to understand and quantify our perception of visible light and color. In this infographic, you will learn the language of light, understand color spaces and color matching...
(Quality Assurance, Test and Compliance Software)
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The idea behind inkjet OLED printing is essentially the same: nozzles deposit a precise amount of material onto a substrate such as glass or film to build up the pixels of a display. OLED inkjet...
(Quality Assurance, Test and Compliance Software)
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As OLED production ramps up around the globe, a critical success factor for the technology is the ability to inspect and qualify these displays to ensure visual performance and quality. When a quality...
(Engineering and Scientific Software)
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The invention of the electric light bulb changed the world, enabling human activity to continue 24 hours a day in all ambient conditions. Today, the lighting design industry is adopting Human Centered...
(Inspection Tools and Instruments)
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This paper discusses 3D sensing and how NIR light is used for facial recognition systems. It explains the importance of measuring radiant intensity of NIR emissions and the challenges of obtaining...
(Inspection Tools and Instruments)
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Curved displays offer manufacturers new design flexibility for vehicle interiors, but also introduce challenges for display measurement. This paper presents the results of several lab tests measuring...
(Inspection Tools and Instruments)
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Consumers used to smart phones and high-resolution display screens expect no less from their vehicle displays. Testing automotive display quality must accommodate requirements for measuring high...
(Quality Assurance, Test and Compliance Software)
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Moiré is especially common when capturing an image of a television, computer, or other screen, where the frequency of the pixelated pattern on the screen is different from the frequency of the pixels...
(Quality Assurance, Test and Compliance Software)
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2020 has brought some unexpected shifts in the display market, increasing demand for laptops and home screens, while causing a dip in the smartphone sales while many retail outlets have been...
(Machine Vision Equipment)
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While addressing fatigue issues associated with human visual inspectors, traditional machine vision systems have not typically been able to match their visual acuity when it comes to spotting subtle...
(Quality Assurance, Test and Compliance Software)
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Blue light has been getting some attention in popular news lately regarding the potential negative effects of exposure to humans. The widespread adoption of phosphor-coated white LEDs (which encompass...
(Inspection Tools and Instruments)
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To create microLED displays, the process starts with epitaxial crystal growth. The selection of materials and/or methods used to build individual microLEDs can have a significant impact on down-stream...
(Inspection Tools and Instruments)
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MicroLED (µLED) displays offer the potential of wider color gamut, higher contrast ratio, and deeper blacks than LCD and OLED displays. To realize the potential of microLED display technology,...
(Spectroscopy)
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To mark the 150th anniversary of the Periodic Table of Elements, originally published in 1869, we explore how chemisty affects the colors we see, chemical properties of colored light, LEDs, and more....
(Inspection Tools and Instruments)
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Electronic paper (aka e-paper, e-ink, and electrophoretic display) is a unique visual display technology designed to replicate the look of ink printed on paper. Compared to traditional LCD, LED or...
(Inspection Tools and Instruments)
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Touchscreens have become commonplace--from our phones and tablets to ATM machines, information kiosks, the GPS display in automobiles. Learn more about different touchscreen technologies and how...
(Spectroscopy)
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Electromagnetic radiation from the sun--including both the visible light spectrum, and invisible wavelengths such as infrared and ultraviolet--is all around us. Recently scientists have found many...
(Inspection Tools and Instruments)
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To compete with the superior contrast ratio performance of OLED display screens, LCD makers have developed the technique of local dimming, which allows different regions of a backlight to be...
(Inspection Tools and Instruments)
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MicroLED (µLED) is on the forefront of emerging display technology. Production challenges have slowed the progress of development and kept costs too high for the mass market, so microLED devices...
(Quality Assurance, Test and Compliance Software)
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Backlit symbols are used on airplanes and in automobiles to ensure visibility even when a vehicle is operated in dark ambient light conditions. Vision Inspection Pack (VIP) is a new software add-on to...
(Inspection Tools and Instruments)
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Display industry predictions have all been saying that 2020 would be the big year for 5G, and it looks like they were right! Networks are rolling out around the globe, new 5G-enabled phones are...
(Machine Vision Equipment)
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Radiant's Advanced Vision solutions are a new class of automated visual inspection technology. Our approach combines the benefits of automated machine vision inspection systems with the power of true...