Tunable multi-focal Diffractive lens

Shima Gharbi Ghebjagh; Arne Behrens; Patrick Feßer; Stefan Sinzinger

doi:10.1364/3D.2021.3Th2D.2

OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)
OSA Technical Digest (Optica Publishing Group, 2021),
paper 3Th2D.2
•https://doi.org/10.1364/3D.2021.3Th2D.2

Tunable multi-focal Diffractive lens

Shima Gharbi Ghebjagh, Arne Behrens, Patrick Feßer, and Stefan Sinzinger

3D Image Acquisition and Display: Technology, Perception and Applications 2021

Washington, DC United States
19–23 July 2021
ISBN: 978-1-943580-89-7

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3D Imaging Acquisition and Displays (3Th2D)

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S. G. Ghebjagh, A. Behrens, P. Feßer, and S. Sinzinger, "Tunable multi-focal Diffractive lens," in OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP), H. Hua, B. Javidi, M. Martinez-Corral, O. Matoba, A. Stern, S. Thibault, T. Alieva, J. Ke, F. Willomitzer, F. Okten, P. Silveira, P. Banerjee, E. Stoykova, D. Chu, J. Park, F. Imai, C. Joo, M. Digman, D. Gardner, S. Gladysz, D. LeMaster, S. Basu, and O. Korotkova, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper 3Th2D.2.

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Abstract

A specific combination of diffractive optical elements can form a tunable multi-focal diffractive lens generating an array of adjustable coaxial focal spots with uniform intensity distribution. The mutual rotation of the two cascaded diffractive grids provides a continuous adjustment of the optical power based on the Alvarez-Lohmann approach and a dynamic tuning of the foci distances.

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