In the real world, when we see an object, it’s actually our eyes receiving light reflecting off that object—a wavefront of light. The wavefront incorporates complex information that our eyes can interpret about brightness, color, and distance (phase) properties of the light waves, which enable us to perceive the object in three dimensions (3D).
Imaging systems are highly efficient visual inspection tools, enabling contextual analysis of the complete area of a display, including deviations in luminance, color, and other characteristics. The process of converting light into digital input to create an image, however, is not precisely one-to-one. Imaging sensor types accomplish this conversion process in different ways, each with distinct benefits and limitations.
Editor in Chief of SID Information Display magazine, Jenny Donelan, interviews Radiant Vision Systems Chief Solutions Officer, Doug Kreysar, on the history and growth of Radiant Vision Systems. This article includes a Q&A with Radiant CSO Doug Kreysar and discusses the company's target markets, growth into the machine vision inspection sector, and new product releases in AR/VR display measurement for augmented and virtual reality devices.
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 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 in:
Disruptive technology like augmented and virtual reality devices lay the foundation for future innovation, and also put demands on the vision and imaging equipment used to ensure the quality of a digital experiences that are blended with reality.
In this article, learn how photometric and colorimetric technology matches the visual sensitivity of human vision. We discuss the advantages and applications of CCD imaging for light and color measurement, as well as component and surface inspection, that most accurately reflects the human visual experience.
Projecting speed, navigation, and alerts onto the car windshield—directly in the operator’s field of view—offers safety and design advantages that have made head-up displays (HUDs) the vehicle segment with the highest expected growth rate in the automotive market (Source: Mordor Intelligence, Automotive Head-up Display Market - Analysis of Growth, Trends, and Forecast (2018 - 2023)). Already introduced in several new vehicles, HUD technology is evolving rapidly.
Despite what their name might suggest, microdisplays are not necessarily microscopic—but they are pretty tiny. For example, at 2018 SID Display Week, BOE showed off a microdisplay screen that’s smaller than a penny:
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 haven’t reached commercialization yet, with the exception of a few very high-end displays. But manufacturers are getting closer and closer to releasing small and mid-size microLED display products for consumers in the next couple of years.
The Near-Infrared (NIR) Intensity Lens system is an integrated camera/lens solution that measures the angular distribution and radiant intensity of 850 or 940 nm near-infrared (NIR or near-IR) emitters. The NIR Intensity Lens system utilizes Fourier optics to capture a full cone of data in a single measurement to ±70 degrees, giving you extremely fast, accurate results ideal for in-line quality control.
The NIR Intensity Lens system is an integrated camera/lens solution that measures the angular distribution and radiant intensity of near-infrared (NIR or near-IR) emitters, such as LEDs and lasers. The NIR Intensity Lens system utilizes Fourier optics to capture a full cone of data in a single measurement to ±70 degrees, giving you extremely fast, accurate results ideal for in-line quality control.
Measurement techniques for near-infrared (NIR) LEDs and lasers ensure the performance of Time-of-Flight (ToF) light-based proximity sensing and 3D mapping and identification using dot patterns produced by diffractive optical elements (DOE).
You’ve probably seen a moiré pattern before, even if you didn’t know the name for it. Moiré (pronounced “mwah-rey”) is the French word for a type of rippled textile effect. In photography, it describes an interference pattern—a form of aliasing—that can appear on images. For example, moiré can be seen on standard photographic or video images that contain a pattern or repetitive detail that exceeds the resolution of the imaging device.
Various market and social forces—from 5G technology to the global pandemic—have accelerated the adoption of virtual reality (VR) by both consumers and businesses. The consumer market is driven in large part by gaming,1 but education and health care applications are also growing, along with other enterprise uses such as remote work and collaboration.
In this article, Radiant's Doug Kreysar (Executive Vice President and Chief Solutions Officer) and Eric Eisenberg (Applications Engineering Manager) describe an optimal imaging solution for measuring near-eye displays (NEDs) with the ideal FOV coverage and entrance pupil position (aperture of the lens) at the front of the optical system.
The display industry converged on Los Angeles last week for the Society for Information Display’s (SID) annual Display Week, an event combining technical symposium, business conference, and exhibition. One of the hottest topics this year was Augmented and Virtual Reality (AR and VR), with in-depth presentations on the technology of these displays, applications, and challenges.
This week, thousands of professionals in the optics, photonics, lighting, camera, lens, display, AR/VR, and related industries will be gathering in San Francisco for a series of events held by SPIE, the international society for optics and photonics. The first event (taking place currently) is the 3rd annual Augmented, Virtual, and Mixed Reality Conference, February 2-4 at Moscone Center West.
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 functions, and other principles of light & color measurement. This tool is a useful reference for anyone with a passion for light metrology, or who works in applications dealing with light & color measurement.
Light measurement systems like imaging photometers and colorimeters use CIE-matched optical filters and scientific-grade imaging sensors to apply these methods, capturing meaningful data that guide human-centric design and evaluation of many of today's devices. Watch this webinar to learn the foundations of photometry and colorimetry, and photometric technologies that leverage these principles to accurately quantify the human visual response to ensure quality in light and display products.
The power of virtual reality lies in the immersive nature of the viewer experience. With a VR headset on, you see only the images presented in front of your eyes. When the technology is well designed and executed, our brains read the images as reality and our experience becomes the world presented on screen.