Design of large field of view diffractive lens based on quadratic phase profile

Tianyu Liu; Feng Xu

doi:10.1117/12.3040224

16 August 2024 Design of large field of view diffractive lens based on quadratic phase profile

Tianyu Liu, Feng Xu

Proceedings Volume 13231, 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024); 132311B (2024) https://doi.org/10.1117/12.3040224
Event: 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024), 2024, Chongqing, China

Abstract

In this paper, combined with the idea of phase optimization and computational imaging, an optimization design method of diffraction microstructure of large field of view diffractive lens is studied. The off-axis aberration of the diffractive lens is regulated, and the back-end image restoration algorithm is combined to finally achieve a large field of view and high-quality imaging effect. Based on the quadratic phase profile, the microstructure height of the diffractive lens is numerically optimized. A quadratic phase diffractive lens with an aperture of 500 μm and a focal length of 500 μm is designed, fabricated and experimentally verified. Finally, it is proved that this method can achieve 60° (±30°) large field of view diffraction imaging effect.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tianyu Liu and Feng Xu "Design of large field of view diffractive lens based on quadratic phase profile", Proc. SPIE 13231, 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024), 132311B (16 August 2024); https://doi.org/10.1117/12.3040224

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