Optical design strategy for under-display biometric imaging solution

Sangin Hahn; Junghoon Yang; Yeon-Wha Oh; Il-Suk Kang; Sang-Hee Ko Park; Seunghyup Yoo

doi:10.1117/12.2677176

6 October 2023 Optical design strategy for under-display biometric imaging solution

Sangin Hahn, Junghoon Yang, Yeon-Wha Oh, Il-Suk Kang, Sang-Hee Ko Park, Seunghyup Yoo

Proceedings Volume PC12661, Organic and Hybrid Sensors and Bioelectronics XVI; PC126610D (2023) https://doi.org/10.1117/12.2677176
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States

Conference Poster

Abstract

This work suggests a design strategy for realizing under-display biometric imaging solutions which can recognize fingerprints and veins. Using a red-light source instead of an additional near-infrared light source, and a collimator with a microlens array directs the reflected light to the detector. Microlens array is optimized with ray-tracing simulation for signal-to-noise ratio and light harvesting performance. Organic image sensor with high pixel density and a large area is suggested for recognizing fingerprints and veins. Ray tracing simulation with designed line patterns confirmed that the integrated system is capable to recognize both fingerprints and veins.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Sangin Hahn, Junghoon Yang, Yeon-Wha Oh, Il-Suk Kang, Sang-Hee Ko Park, and Seunghyup Yoo "Optical design strategy for under-display biometric imaging solution", Proc. SPIE PC12661, Organic and Hybrid Sensors and Bioelectronics XVI, PC126610D (6 October 2023); https://doi.org/10.1117/12.2677176

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