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.
Radiant Vision Systems provides leading display test solutions for labs and production lines, with thousands of cameras testing millions of devices worldwide.
Evaluating the visual quality of displays as viewed through augmented and virtual reality headsets requires testing from the vantage point of the user. Radiant Vision Systems provides a comprehensive hardware/software solution designed to replicate viewing parameters within AR/VR headsets for the most accurate and efficient evaluation of displays and projections.
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.
The most important part of any camera is the lens, which directs light in ways that create images to mirror reality. Today’s photographic lenses are sophisticated instruments composed of multiple elements (individual glass or plastic lens discs), paired with an aperture, shutter, and controls, all arranged along a central axis, and held within the lens casing.
Near-eye displays – like those used in augmented (AR), virtual (VR), and mixed (MR) reality devices – project virtual objects and information in close proximity to the human eye, sometimes encompassing the user’s entire angular field of view. This proximity not only magnifies display projections, but also enhances defects like non-uniformity, line and pixel defects, poor image clarity, and image positioning issues.
“Help me, Obi-Wan Kenobi. You’re my only hope.” In 1977, these words first introduced Star Wars audiences to Princess Leia, perhaps the most famous hologram in history. Except, she wasn’t really a three-dimensional (3D) hologram—the projection was a product of movie special-effects magic, just an image on film, because 3D holographic technology didn’t exist at the time.
As the display industry increasingly turns to pixel-dense displays to create vivid and detailed on-screen images, there is a growing need for precise, high-resolution measurement methods to ensure quality of these displays. Particularly with emissive technologies like OLED and microLED, and microdisplays that are viewed near to the eye, a single defective pixel or sub-pixel can impact display performance and user experience.
MicroLED (µLED) displays offer the potential of wider color gamut, higher contrast ratio, and deeper blacks than LCD (liquid crystal display) and OLED (organic light-emitting diode) displays. MicroLEDs match OLED technology for response time and view-angle performance, but exceed OLED in brightness and ruggedness, with much lower power consumption.
When we think of virtual reality (VR) and augmented reality (AR), the first thing that comes to mind is typically entertainment and games like VR sports or Pokémon GO. But the uses of this technology go far beyond recreation. In fact, AR and VR devices are poised to revolutionize medicine with new clinical applications and treatments.