AUGMENTED & VIRTUAL REALITY
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What is AR/VR ?
Augmented Reality (AR) and Virtual Reality (VR) are two closely related technologies that have gained popularity in recent years.
- Augmented Reality is an immersive technology that overlays virtual elements such as images, video, or text information onto the real world. This fusion of the physical and virtual worlds allows users to see and interact with virtual content in their real-world environment, typically through a device such as a smartphone or dedicated glasses.
- Virtual reality differs from AR. With VR, users are in a fully simulated environment. When they wear VR headsets, the real world disappears, and they can explore 360-degree videos, games, or virtual spaces. They are completely immersed in the digital experience.
AR enriches the real world by adding virtual elements, while VR immerses the user in a completely virtual world, each offering unique immersive experiences. Are you familiar with the latest trend, Mixed Reality (MR)?
- Mixed reality (MR) combines virtual reality (VR) and augmented reality (AR) by integrating digital content with the real world. MR allows users to interact with virtual objects in their physical space, offering a dynamic and interactive experience that merges both realms seamlessly.
Both AR and VR have the potential to revolutionize the way we interact with technology and experience the world around us. As these technologies continue to evolve and improve, we can expect to see even more innovative uses and applications in the future.
At ELDIM, we are dedicated to helping you enhance AR/VR displays with our latest products.
Our AR/VR products
AR/VR's displays challenges :
SCREEN DOOR EFFECT, DISTORSIONS, RESOLUTION, FIELD OF VIEW
The most challenging issue in AR/VR displays today is the “SCREEN DOOR” effect. The Screen Door Effect is a visual effect caused by the projection technology that makes the thin lines of separation between pixels visible. This effect is a real problem with VR headsets because of the eye-screen distance and the wider field of view.
The VCProbe-AR/VR-MTF is an ELDIM equipment specifically designed to measure both screen resolution and distortion in virtual reality headsets. Its high-resolution camera will allow you to calculate the Modulation Transfer Function (MTF) response of your display to evaluate its ability to render fine details. By comparing different areas of the screen, you will be able to detect variations in sharpness.
VCProbe-AR/VR-Color result :
CHROMATICITY, BRIGHTNESS, UNIFORMITY, MURA EFFECT
Why it is important to evaluate the colorimetry on AR/VR displays ?
Accurate color representation is critical for AR/VR displays and serves several purposes:
Accurate color measurement reduces eye strain during prolonged AR/VR use. Correctly measured and displayed colors increase comfort. Accurate color ensures a realistic and immersive experience for users interacting with digital environments. Incorrect or variable colors can disrupt immersion, as the slightest difference in color reproduction between the two eyes is highly noticeable to the user. Consistent color across devices and applications is essential to build user trust and satisfaction.
AR/VR displays, as near-eye displays, present a significant challenge in avoiding defects. The proximity of the eye to the display amplifies even the smallest imperfections, making quality control a challenging task.
In summary, measuring colorimetry in near-eye displays is critical to ensuring visual accuracy, user comfort, and technological advancement. It ensures accurate color representation for immersive experiences, reduces eye strain, and enables content consistency across devices. It also supports quality control in manufacturing to deliver high quality products.
The VCProbe-AR/VR-Color is an ELDIM equipment that evaluates the colorimetry of AR/VR displays. It analyzes the luminance and visible color perceived by our eyes to detect potential defects in the display. Thanks to the colorimetry results, you can get the color gamut for your sample. With this product, you can also identify display defects due to internal light leakage and obtain its luminance profile.
Check out also the video below of the equipment software. It demonstrates the kind of results you can get with our equipment.
VCProbe-AR/VR-Color software video :
POLARIZATION STATES MAP FOR PANCAKES LENSES
Have you ever noticed those strange appearances in your AR/VR headsets? Those “ghosts” that seem to haunt your pancake lenses?
Pancake lenses are incredibly compact, making them ideal for AR/VR devices. However, their design can cause internal reflections. Light rays bounce around inside the lens, creating those infamous ghosts.
To prevent the appearance of these ghosts, we’ve developed a state-of-the-art conoscope capable of generating a full polarization map of your lenses in less than 10 seconds.
The VCProbe-AR/VR-Polar is an ELDIM instrument designed to examine the polarization states of optical components. Its ability to evaluate the effects of variable angles of incidence on uniformly distributed materials and to visualize polarization states of your designed VR lenses sets a new standard in optical analysis.
This instrument is essential for evaluating AR/VR pancake lenses by measuring these critical characteristics:
- Ellipticity
- Transmittance
- Polarization Degree
- Orientation
VCProbe-AR/VR-Polar result :
VCProbe-AR/VR-Polar Presentation Video :
Microdisplays inside AR/VR displays, challenges :
XSCOPE result :
UNIFORMITY, RESOLUTION, DETECT DEFAULT PIXELS
Traditional display inspection techniques are inadequate for micro-sized devices such as microLEDs and microOLEDs, which are individual emitters with each LED acting as its own pixel. This setup can cause significant variations in brightness and color from one pixel to another.
To ensure display quality, defects and uniformity issues must be accurately identified and measured during manufacturing; helping you meet brand standards and avoid scraping. Inspecting these high-resolution microdisplays at the subpixel level requires advanced, high-resolution measurement systems.
The XSCOPE is an ELDIM equipment specifically designed to capture sharp images of a Device Under Test (DUT) at 4.5x magnification. A unique optical design has been developed to ensure superior image quality, as measured by a Modulation Transfer Function (MTF) greater than 10% for 400 lines per millimeter across the entire image. This design incorporates 12 different lenses, some of which are aspherical, to provide the finest performance within the visible light spectrum.
With the XSCOPE, you can easily measure the brightness of LED pixels on a large scale without the need for complex image fusion techniques. Its ability to measure a wide range of brightness with high precision over a large area makes it perfect for evaluating bright microLED displays built on ASICs. This data will help improve the performance and uniformity of the epitaxial layers and the manufacturing process. In addition, it can be used by the backplane ASIC to compensate for any variations in pixel brightness.