VCSEL array for compact time-of-flight sensor

Michael Linde Jakobsen; S. Osten; Steven Richard Kitchen; Carsten Dam-Hansen; Steen Gruner Hanson

doi:10.1117/12.543334

15 December 2003 VCSEL array for compact time-of-flight sensor

Michael Linde Jakobsen, S. Osten, Steven Richard Kitchen, Carsten Dam-Hansen, Steen Gruner Hanson

Proceedings Volume 5260, Applications of Photonic Technology 6; (2003) https://doi.org/10.1117/12.543334
Event: Applications of Photonic Technology, 2003, Quebec City, Québec, Canada

Abstract

A novel and low-cost time-of-flight system is presented. The system, which is based on a vertical cavity surface emitting laser (VCSEL) array as the light source, images the near field of all the VCSEL beams into the measurement volume. Each VCSEL provides a light sheet or a light spot in the measurement volume, and thus adds to the total optical power present in the measurement volume. The multiple-beam time-of-flight system provides operation at a lower signal-to-noise ratio and determinant of target-motion direction with a single photodetector. The concept provides a simple and compact sensor for surface velocity and fluid flow measurments, where the calibration of the system is almost temperature independent. This paper will demonstrate the concept and quantify the system tolerance with respect to temperature changes.

Citation Download Citation

Michael Linde Jakobsen, S. Osten, Steven Richard Kitchen, Carsten Dam-Hansen, and Steen Gruner Hanson "VCSEL array for compact time-of-flight sensor", Proc. SPIE 5260, Applications of Photonic Technology 6, (15 December 2003); https://doi.org/10.1117/12.543334

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