Optical time of flight and an autofocus system using a variable focal length lens

Juan M. F. Sanchez; Joel C. Lozano; Keiichiro Kagawa; Hajime Nagahara; Yoshio Hayasaki

doi:10.1117/12.2602552

9 October 2021 Optical time of flight and an autofocus system using a variable focal length lens

Juan M. F. Sanchez, Joel C. Lozano, Keiichiro Kagawa, Hajime Nagahara, Yoshio Hayasaki

Proceedings Volume 11895, Optical Design and Testing XI; 118950P (2021) https://doi.org/10.1117/12.2602552
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Abstract

In this manuscript, we present an optical time of flight and a focusing system to measure and track a reflective target, respectively. The time-of-flight and tracking system is based on the reflectance of the targets. This system uses a commercially available variable focal length lens that changes focal planes when current is applied. The optical system is mounted on a motorized stage that moves the system closer to or away from the target to be located; This is to expand the dynamic focal range of the system. The system is controlled by a specially designed LabVIEW program that controls the entire system.

Conference Presentation

Citation Download Citation

Juan M. F. Sanchez, Joel C. Lozano, Keiichiro Kagawa, Hajime Nagahara, and Yoshio Hayasaki "Optical time of flight and an autofocus system using a variable focal length lens", Proc. SPIE 11895, Optical Design and Testing XI, 118950P (9 October 2021); https://doi.org/10.1117/12.2602552

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