Liquid Lens Optical Design for Adjustable Laser Spot Array for the Laser-Based Three-Dimensional Reconstruction of Vocal Fold Oscillations

Haas B, Mary R, Cvecek K, Roider C, Schmidt M, Döllinger M, Semmler M (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Book Volume: 6

Article Number: 10

Journal Issue: 1

DOI: 10.3390/opt6010010

Abstract

Standard endoscopy of vocal folds is in general limited to two-dimensional imaging. Laser-based 3D imaging offers not only absolute measurements but also the possibility of assessing all three spatial directions. However, due to human inter-individuality, a fixed grid configuration (with fixed edge length and spot size) does not necessarily provide the best coverage and resolution. We present a liquid lens optical design for a diffractive spot array generator with dynamic adjustment capabilities for both array size and spot size. The tunable nature of the liquid lenses enables precise control over the spot array generated by a diffractive optical element (DOE). The first liquid lens controls the spot divergence in the observation plane, while the second liquid lens adjusts the zoom factor. The optical configuration provides a dynamic range of 1.8 with respect to array size, significantly enhancing adaptability in imaging across various applications.

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How to cite

APA:

Haas, B., Mary, R., Cvecek, K., Roider, C., Schmidt, M., Döllinger, M., & Semmler, M. (2025). Liquid Lens Optical Design for Adjustable Laser Spot Array for the Laser-Based Three-Dimensional Reconstruction of Vocal Fold Oscillations. Optics, 6(1). https://doi.org/10.3390/opt6010010

MLA:

Haas, Benjamin, et al. "Liquid Lens Optical Design for Adjustable Laser Spot Array for the Laser-Based Three-Dimensional Reconstruction of Vocal Fold Oscillations." Optics 6.1 (2025).

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