An optical apparatus to enable absolute angular alignment for sampling-based MTF test equipment

Teresa Zhang; Jiang He; Wei Zhou

doi:10.1117/12.2635131

3 October 2022 An optical apparatus to enable absolute angular alignment for sampling-based MTF test equipment

Teresa Zhang, Jiang He, Wei Zhou

Proceedings Volume 12222, Optical System Alignment, Tolerancing, and Verification XIV; 122220B (2022) https://doi.org/10.1117/12.2635131
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

MTF tests, one of the most important optical metrology tasks for AR/MR glasses, analyze the DUT’s (Device Under Test) optical resolution to provide quantitative feedback for design verification and manufacturing process control. Due to the immaturity of the whole design/fabrication technical chain, current diffractive AR glasses show strong angular resolution non-uniformity across the FOV, and the measurement’s angular accuracy and consistency significantly impact the test repeatability and reproducibility. This paper presents a novel optical calibration apparatus to enable absolute angular alignment/verification, which can be implemented with a small volume and easily fit into the metrology equipment.

Conference Presentation

Citation Download Citation

Teresa Zhang, Jiang He, and Wei Zhou "An optical apparatus to enable absolute angular alignment for sampling-based MTF test equipment", Proc. SPIE 12222, Optical System Alignment, Tolerancing, and Verification XIV, 122220B (3 October 2022); https://doi.org/10.1117/12.2635131

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