Paper
18 December 2023 Analysis of the imaging quality of an achromatic planar lens
Shuyi Wang, Shaobo Ge, Weiguo Liu
Author Affiliations +
Abstract
The optical imaging technology possesses characteristics such as intuition, high resolution, and convenient application, which are of significant importance in the fields of physics, materials science, biology, and medicine. Traditional imaging systems are large in volume, heavy in weight, and structurally complex. Recently, the development of Multi-level Diffractive Lens (MDL) has introduced advantages such as small volume, light weight, and easy integration. However, the current analysis of MDL imaging quality has generally been limited to a narrow spectral range, and the aperture sizes of the components are mostly in the millimeter range, which somewhat restricts their applications. This study focuses on the research of the imaging performance of a 5cm aperture MDL. To analyze the focusing performance and imaging quality, we designed and constructed an optical setup that is compatible with a 10cm aperture. The tested wavelength range covers 0.4 to 1.1 μm. The test results show that the RMS value of the focal length for the large aperture MDL is 22.67cm in the visible and near-infrared wavelength ranges. Compared to the traditional Fresnel lens, achromatism performance is significantly improved. The RMS value of the focal spot size in the visible wavelength range is 24.01μm, while in the near-infrared wavelength range is 26.64μm. The full-band imaging test results in the range of 0.4to 1.1μm show that the large aperture MDL has a line pair resolution of 161.01 lp/mm and a linewidth resolution of 3.1lp/mm. The aforementioned experimental results demonstrate the wide range of potential applications for the large aperture MDL in fields such as microscopic analysis, optoelectronic detection, and medical
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Shuyi Wang, Shaobo Ge, and Weiguo Liu "Analysis of the imaging quality of an achromatic planar lens", Proc. SPIE 12963, AOPC 2023: Optical Sensing, Imaging, and Display Technology and Applications; and Biomedical Optics, 129631D (18 December 2023); https://doi.org/10.1117/12.3007827
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Image resolution

Imaging systems

Biological imaging

Diffraction

Chromatic aberrations

Design and modelling

Lenses

Back to Top