XRE Lens: Near-Eye Display Test Solution with Electronic Focus
2Pages

XRE Lens Near-Eye Display Test Solution with Electronic Focus Applications • Measurement of near-eye displays (NEDs) and extended reality (XR) devices: augmented (AR), mixed (MR), and virtual reality (VR) headsets • Test and measurement of luminance, chromaticity, contrast, modulation transfer function (MTF), image distortion, image sticking, and x,y image position • Characterization and quality control for devices in R&D and production Benefits • Electronic focus • Fold-mirror option to enable ‘periscope’ measurement • High-resolution measurements with up to ±35° FOV • Distortion correction to normalize images before testing • Spatial positions reported in degrees (°) via software • Pairs with high-resolution ProMetric® Imaging Colorimeters and Photometers • Easy-to-use measurement control and analysis software Specially designed lens and configuration options for neareye display testing within extended reality (XR) headsets The Radiant Vision Systems XRE lens has a unique optical design specially engineered for measuring near-eye displays (NEDs), such as those integrated into virtual (VR), mixed (MR), and augmented reality (AR) headsets. The lens design simulates the size, position, and field of view of the human eye. Unlike alternative lens options, where an aperture is located inside the lens, the entrance pupil of the XRE lens is located in front of the lens. This enables the positioning of the imaging system’s entrance pupil within NED headsets to view head-mounted displays (HMDs) at the same location as the human eye. With the entrance pupil in front of the lens, the connected imaging system can capture a wide field of view (FOV) of the display (up to ±35°) without occlusion by hardware. The effective aperture size of 3.3 mm also matches the size of a human entrance pupil, allowing displays to be measured under the same conditions as they are viewed by a user. The XRE lens mounts directly to a Radiant high-resolution ProMetric® Y-series Imaging Photometer or I-series Colorimeter. Radiant TrueTest™ Software provides the leading display test algorithms and a specialized test suite for XR display analysis within the TT-ARVR™ Software module, including: modulation transfer function (MTF) to evaluate image clarity based on Line Pairs, Slant Edge Contrast (ISO 12233), or Line Spread Function (LSF); Distortion; Focus Uniformity; reporting the horizontal, vertical, and diagonal device FOV; and giving spatial x,y positions in degrees (°). Extensive data analysis functions are supported, including isometric plots, cross-section graphs, radar plots, bitmaps and CIE color plots. Aperture location inside of standard lens results in image occlusion. Entrance pupil in front of lens enables imaging the full display field of view. Radiant Vision Systems 18640 NE 67th Ct. Redmond, WA 98052 USA General Inquiries: Info@RadiantVS.com Technical Support: Support@RadiantVS.com Website: www.RadiantVisionSystems.com Copyright © 2022 Radiant Vision Systems

Key Features • Electronic focus to adjust focal settings via software • Entrance pupil positioned in front of lens to simulate human eye entrance pupil • Effective aperture size (3.3 mm) to simulate human eye pupil size • Field of view up to ± 35° (70° total) Specifications Parameter Primary Application XRE Lens Light and color measurement for near-eye displays (NED) in headsets Effective Aperture Focus Distance** Minimum Inter-Pupillary Distance Fold Length of Optional Fold Mirror Luminance - Minimum Luminance - Maximum*** 10,000 cd/m2 (Y-series); 1,000,000 cd/m2 (I-series) Luminance,...