We introduce a general closed-form analytic formula to design special lenses that generate spherical aberration-free extended images specified previously by the user. The formula considers arbitrary and non-conventional patterns. The formalism is tested with well-established ray tracing techniques.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/JOSAA.36.000925 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An achromatic extended depth-of-field (EDOF) system can obtain clear scene information that is crucial for target recognition, dynamic monitoring, and other applications. However, the imaging performance of most optical systems is depth-variant and wavelength-variant, which leads to the generation of chromatic aberrations. Traditional optical design and image post-processing algorithms cannot effectively eliminate these chromatic aberrations.
View Article and Find Full Text PDFThis paper demonstrates the benefits of leveraging free-space optics concepts in the design of certain integrated photonic components, leading to a footprint reduction without compromising on performance. Specifically, we present ultra-short, highly efficient and fabrication-friendly mode-size converters based on metamaterial Fresnel lens-assisted tapers. This is achieved using a parameterized inverse-design approach, where the metamaterial phase shifters are realized using fabrication-friendly Manhattan geometries, by optimizing the width, length, and position of the phase shifters.
View Article and Find Full Text PDFPhotophysical characterization of xanthene dyes.
Spectrochim Acta A Mol Biomol Spectrosc
February 2025
Departamento de Física, Universidade Estadual de Maringá, Maringá, PR 87020-900, Brazil. Electronic address:
The growing interest in using photodynamic therapy for cancer treatment and antimicrobial applications has prompted the search for different classes of dyes. In general, the protocols of these studies are different, making it difficult to compare their efficiency directly. Here, we apply a controlled protocol to analyze the photophysical properties of Erythrosin B, Eosin Y, and Rose Bengal using a set of optical techniques.
View Article and Find Full Text PDFElectrically tunable planar liquid-crystal singlets for simultaneous spectrometry and imaging.
Light Sci Appl
September 2024
Electronic Information School, and School of Microelectronics, Wuhan University, Wuhan, 430072, China.
Conventional hyperspectral cameras cascade lenses and spectrometers to acquire the spectral datacube, which forms the fundamental framework for hyperspectral imaging. However, this cascading framework involves tradeoffs among spectral and imaging performances when the system is driven toward miniaturization. Here, we propose a spectral singlet lens that unifies optical imaging and computational spectrometry functions, enabling the creation of minimalist, miniaturized and high-performance hyperspectral cameras.
View Article and Find Full Text PDFSU() symmetry of coherent photons controlled by rotated waveplates.
Heliyon
July 2024
Center for Exploratory Research Laboratory, Research & Development Group, Hitachi, Ltd., 1-280 Higashi-Koigakubo, Kokubunji, 185-8601, Tokyo, Japan.
The coherent state from a laser source has spin and orbital degrees of freedom, which allow an arbitrary superposition state among orthogonal states with varying amplitudes and phases. Here, we theoretically show coherent photons with SU() symmetry are characterised by expectation values of angular momentum shown on a hypersphere in SO( ) space. To demonstrate expected unitary transformations in experiments, we have constructed generators of transformations in the Lie group simply by combining widely available optical components such as waveplates and vortex lenses.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!