Optics and Lasers in Engineering, Journal Year: 2024, Volume and Issue: 185, P. 108718 - 108718
Published: Nov. 26, 2024
Language: Английский
Light Science & Applications, Journal Year: 2025, Volume and Issue: 14(1)
Published: Feb. 10, 2025
Abstract Light-field displays typically consist of a two-dimensional (2D) display panel and light modulation device. The 2D presents synthesized parallax images, with the total information content three-dimensional (3D) field dictated by panel’s resolution. Angular resolution serves as critical metric for light-field displays, where higher angular correlates more realistic 3D visual experience. However, improvement is accompanied reduction in spatial resolution, due to limitations To address this challenge, method enhanced utilization introduced, achieved through independent chrominance luminance. A static image system proposed verify feasibility method. employs bidirectional grating (BAMG) collimated source (CLS) create uniformly distributed viewpoints space. luminance film (LMF) (CMF) are utilized modulate information, images printed at pixel densities 720 pixels per inch (PPI) 8000 dots (DPI), respectively, align differential sensitivities human system. In experiment, achieves full-parallax, high-fidelity color 98.2° horizontal 97.7° vertical view (FOV). So, modulating separately has been proven achieve effects.
Language: Английский
Citations
2
Optics Communications, Journal Year: 2025, Volume and Issue: unknown, P. 131583 - 131583
Published: Feb. 1, 2025
Language: Английский
Citations
0
Optics Letters, Journal Year: 2025, Volume and Issue: 50(4), P. 1144 - 1144
Published: Jan. 6, 2025
Traditional non-interferometric quantitative phase imaging (QPI) methods often face challenges in realizing rapid and accurate of large-phase samples, mainly due to slow convergence dependence on object approximation models. In this Letter, we propose a new, the best our knowledge, QPI approach that leverages iterative Kramers–Kronig (KK) relations, named iKK-QPI, achieve high-accuracy measurement objects with values. current KK relations reconstruction framework, impose real-part constraints cepstrum, breaking restriction weak scattering condition. With only few iterations, iKK-QPI extends range can be reliably retrieved by QPI, exceeding first-order Born Rytov approximations. The capability is demonstrated microlens array COS-7 cells. We accurately reconstruct ranges 6 rad (error < ± 5%), three times relations-based method, opening up possibility for measure biological industrial samples features.
Language: Английский
Citations
0
Optics Letters, Journal Year: 2025, Volume and Issue: 50(4), P. 1269 - 1269
Published: Jan. 13, 2025
Fourier-inspired single-pixel holography (FISH) is an effective digital (DH) approach that utilizes a detector instead of conventional camera to capture light field information. FISH combines the Fourier imaging and off-axis technique, allowing one acquire useful information directly, rather than recording hologram in spatial domain filtering unwanted terms domain. Furthermore, we employ deep learning technique jointly optimize sampling mask enhancement model, achieve high-quality results at low ratio. Both simulations experimental demonstrate effectiveness phase imaging. strengths (SPI) DH, potentially expanding DH’s applications specialized spectral bands low-light environments while equipping SPI with capabilities for detection coherent gating.
Language: Английский
Citations
0
Optics Letters, Journal Year: 2025, Volume and Issue: 50(4), P. 1085 - 1085
Published: Jan. 21, 2025
Lens-free on-chip microscopy (LFOCM) is a high-throughput computational imaging technique that enables high-resolution, label-free without requiring complex optical systems. However, LFOCM encounters significant challenges in achieving high-resolution reconstructions due to noise accumulation. We propose high-fidelity method integrates pixel super-resolution (PSR) with dynamic dual-channel separation (DCNS). This approach simultaneously separates the amplitude and phase during reconstruction process, thereby improving robustness enhancing range of quantitative imaging. Experimental validation across various sample types demonstrated effectiveness our method. DCNS achieves resolution exceeds 34.1% Nyquist–Shannon sampling limit, full field view (FOV) 28.6 mm 2 , effectively suppressing artifacts degrade quality, thus resolving trade-off between reduction resolution.
Language: Английский
Citations
0
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: Feb. 5, 2025
Abstract Supervised learning, a popular tool in modern science and technology, thrives on huge amounts of labeled data. Physics-enhanced deep neural networks offer an effective solution to alleviate the data burden by incorporating analytical model that interprets underlying physical processes. However, it completely fails tackling systems without solution, where wave scattering with multiple input output are typical examples. Herein, we propose concept empirical network (DENN) is hybridization model, which enables seeing through opaque medium untrained manner. The DENN does not rely data, all while delivering as high 58% improvement fidelity compared supervised learning using 30000 pairs for achieving same goal optical phase retrieval. might shed new light applications physics, information science, biology, chemistry beyond.
Language: Английский
Citations
0
Optics & Laser Technology, Journal Year: 2025, Volume and Issue: 184, P. 112544 - 112544
Published: Feb. 8, 2025
Language: Английский
Citations
0
Optics Letters, Journal Year: 2025, Volume and Issue: 50(6), P. 1909 - 1909
Published: Feb. 12, 2025
In this work, a new framework of lensless Fourier transform multiplexed digital holography (LFTMDH) is proposed, leveraging the double field view (FoV) in single-shot recording. The proof-of-concept system with FoV realized by adopting spatially multiplexing technique inserting cube beam splitter object path. divides into two FoVs different information. By carefully aligning and optimizing orientation splitter, these along spherical reference (generated at plane) are allowed to interfere active region an image sensor, resulting hologram. information (amplitude phase) obtained applying single recorded hologram, making faster added benefit FoV, compared its counterparts. feasibility advantages proposed demonstrated through experimental validation comparative analysis existing system. results indicate that not only achieves imaging recording but also maintains spatial resolution reconstructed images. Its applications span various fields, such as biological microscopy, nondestructive testing, optical metrology, where wider crucial.
Language: Английский
Citations
0
Published: March 8, 2025
We present a metasurface design for generating multi-channel vector vortex beams through simultaneous control of phase and polarization states. The consists nested silicon nanopillars on SiO2 substrate, designed to operate at 800 nm wavelength. By implementing independent deflection phase, lens each channel, we achieve the generation dual-channel with different topological charges. Numerical simulations demonstrate successful in separate channels, both identical (l = 1) 1 l 2) simulation results show well-defined doughnut-shaped intensity profiles precise channel focal plane, confirming our design's capability complex beam manipulation multiple channels.
Language: Английский
Citations
0
Acta Optica Sinica, Journal Year: 2025, Volume and Issue: 45(1), P. 0112003 - 0112003
Published: Jan. 1, 2025
Citations
0