TRIOPTICS introduces AR waveguide testing solution for high volume production
ImageMaster® PRO AR Reflection sets new standards with widefield diffraction-limited optics for unmatched accuracy and takt times
The new ImageMaster® PRO AR Reflection will be launched during SPIE AR | VR | MR, a special branch event colocated with SPIE Photonics West in San Francisco from January 28 to 29, 2025. It offers manufacturers and integrators a comprehensive solution for the image quality validation of optical components for augmented reality (AR) applications.
Using a conoscope as core technology in the system, the image details are captured using a wide field of view (70° x 52.5°). “A conoscope is an optical device, designed to cover a wide field of view in order to analyze the angular distribution of light, which is essential for characterizing display systems. A well-designed diffraction-limited conoscope excels in measuring off-axis angles — a task often challenging for other optical metrology methods when measuring simultaneously — making it ideal for evaluating wide-field display systems and ensuring consistent measurement performance across the entire field of view,” explains Mohit Yadav, Product Manager at TRIOPTICS. “This measurement approach reduces measurement time and leads to high productivity with achievable takt times of less than 1.5 seconds.”
While primarily geared towards production, the ImageMaster® PRO AR Reflection is also suitable for R&D. It is capable of functioning as either a standalone instrument or integrating seamlessly into existing production processes. This includes robot sample handling and the system can be flexibly adapted to changing requirements.
The ImageMaster® PRO AR Reflection ensures high measurement accuracy across the entire field of view. “The image quality measurement with high frequency up to 30 lp/° (off-axis) and even higher (on-axis), is performed with high accuracy,” Mohit Yadav reports. “Thus, only the best components of waveguides and light engines can be chosen for the following production steps to guarantee best image quality in the final AR glasses.” The system is capable of a wide range of measurement parameters including Modulation Transfer Function (MTF), Effective Focal Length (EFL), Virtual Image Distance (VID), Distortion, Uniformity, and Chief Ray Angle (CRA). Its 8 degrees of freedom enable comprehensive scanning of the sample under test, covering the complete field of view, eye-box, and focus adjustments.