There’s a lot of data used to characterize electronic displays: resolution, pixels per inch, refresh rate, luminance (nits), pixel pitch, dynamic range, contrast ratio, etc. All this information is meant to help convey the quality of a display. But ultimately, it is the visual experience of human users that will define a display’s performance—and largely determines its success in the marketplace.
Aerospace
You’re in the driver’s seat of your car, glancing at the map on your GPS display to navigate the journey. Meanwhile, your spouse is in the passenger seat, using a display interface in the center console to adjust the temperature and air flow inside the car for everyone’s comfort. And your kids are strapped in the back seat, heads bent together over a shared tablet that’s playing the latest Pixar video release to keep them entertained on the drive.
On an aircraft, critical safety and operational information is relayed to pilots and passengers primarily via artificial light.
Augmented reality (AR) may be hot in the marketplace right now, but it’s nothing new in military aircraft. “It’s been around for nearly 60 years,” says Chris Colston, director of strategic growth at BAE Systems, which built the first head-up display (HUD) for the Blackburn “Buccaneer” aircraft that launched in the late 1950s. “We’ve supplied AR solutions long before that meant anything to the mass market.”1
The Auto-POI (Automatic Points of Interest) functionality available in Radiant's TrueTest™ software platform enables the automatic application of points of interest on backlit symbols using luminance values and chromaticity coordinates to define measurement thresholds. Learn how to use this tool for quick and efficient measurement of various symbol sets in a backlit panel, button, sign, or instrument cluster.
Learn a unique application of Radiant ProMetric® imaging solutions for measuring OLED displays on the pixel and sub-pixel level to calculate non-uniformity and coefficients for pixel-level luminance correction. This process, referred to as “demura,” adjusts the luminance and/or chromaticity of each OLED pixel to produce displays with an entirely uniform appearance.
In this article, we discuss unique measurement considerations for ensuring the quality of LED sources, and equipment for measuring LED displays, individual sources, and luminaires.
In this 50-minute webinar, International Senior Business Advisor for Radiant Automotive applications Matt Scholz presents a method for repeatable sparkle measurement across users, devices, and systems, with quantifiable results that correlate to human visual perception of display quality.
In this article, we describe a method for the measurement of large light sources in a limited space that efficiently overcomes the physical limitations of traditional far-field measurement techniques. The measurement is performed from within the near-field of the light source, enabling a compact measurement set-up, and generates a detailed near-field color and luminance distribution model that can be directly converted to ray sets for optical design and that can be extrapolated to far-field
For optical design and product qualification, the output color and luminance distributions of large light sources are needed to qualify and predict the performance of architectural, automotive, street, security, entertainment and other lighting systems. However, these distributions are difficult to measure because of both the size of the source and the large space required for the measurement.
In this article, Radiant Vision Systems Chief Solutions Officer, Doug Kreysar, contributes his thoughts on AR/VR technology development, which brings together camera systems, near-IR eye tracking, gesture recognition, and other machine vision capabilities that improve the visual performance and extend the application of AR/VR headsets.
The FPD Conoscope Lens system from Radiant utilizes Fourier optics to capture a full cone of photopic and colorimetric data in a single measurement to ±70 degrees, giving you extremely fast, accurate results ideal for labs or in-line quality control. Learn more about the FPD Conoscope Lens view angle measurement solution in this presentation.
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.
In this article, we discuss the manufacturing challenges that are common in OLED displays, and correction methods that can be used to adjust the output of individual pixels of emissive displays (like OLED, microLED, and others) to ensure uniformity of brightness and color, preventing waste of "defective" materials and improving manufacturing efficiency.
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:
On a passenger airliner, backlit displays such as exit signs, fasten seatbelt signs, lavatory signs, and other signage are crucial for both comfort and safety. These products must meet strict tolerances for brightness and color—as defined by each aircraft manufacturer—as well as stringent industry regulations.
With absolute quality as a focus, Luminator Aerospace performs extensive light and color measurement tests on products such as exit signs, fasten seatbelt signs, lavatory signs, and other signage. These tests ensure that customer specifications are met to exact values and that a record of verifiable quality data is documented for each part.
Human perception is the ultimate standard for determining the visual quality of a display. For this reason, human inspectors have traditionally been used for quality control inspection of products like display devices. However, using human inspection can be problematic because of the statistical variation between observers.
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.
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 results. Using this method, OEMs and manufacturers of displays can define precise, measurable tolerances for sparkle and establish standard quality control processes for anti-glare displays.
