Oct 2026· Terahertz Emitters, Receivers, and Applications XVII· pp. 27· 0 citations
Abstract
We present a hybrid image projection framework that achieves pixel super-resolution by integrating a neural network-based digital encoder with a passive diffractive decoder, both jointly optimized. This system utilizes a convolutional neural network to compress high-resolution input data into compact, phase-only representations. These encoded phase patterns are then displayed by a low-resolution projector and optically processed by a series of passive, structurally optimized diffractive layers. The diffractive decoder achieves pixel super-resolution at its output, synthesizing high-fidelity images over an extended depth-of-field with minimal latency and without additional power consumption. Our architecture demonstrates a 16-fold improvement in the effective space-bandwidth product of the image projection system and maintains high image quality across an axial range spanning hundreds of wavelengths. Validated through proof-of-concept experiments in the terahertz and visible parts of the spectrum, this approach provides a scalable, energy-efficient solution for enhancing information throughput in next-generation displays, optical metrology, and microscopy systems.
This paper presents an end-to-end optical-algorithm co-design framework for achromatic extended depth-of-field imaging, targeting the trade-off between spatial resolution, depth of field, and chromatic degradation in high-resolution imaging systems. The proposed framework formulates the phase plate in a Fourier imaging...
Qing Ye, Cheng Zhang, Jia-Xiang Chen et al.· Conference on Optics and Com...· 0 citations
Integral imaging (InIm) enables 3D displays with continuous parallax and authentic depth cues, representing a highly promising technical solution for true 3D extended reality (XR) displays. However, it suffers from a fundamental trade-off between spatial resolution and field of view (FOV). This study verifies that a he...
Yang Yi, Yi-Fan Ding, Jian-Wen Dong et al.· Applied Optics· 0 citations
Quantitative phase imaging (QPI) reveals optical path-length variations in transparent objects but typically relies on spatially resolved intensity measurements. Here we numerically and experimentally demonstrate learned optical compression for single-pixel QPI, jointly optimizing a diffractive encoder and a digital ne...
A. Portes, Yun-Tian Wang, Che-Yung Shen et al.· 0 citations
This paper reports the development of a high-imaging-quality holographic lens for potential integration into compact zoom systems. The work focuses on fabrication-process optimization, image-distortion correction, performance testing, and imaging-quality improvement. A transmission holographic recording scheme based on...
Yi-Ren Guo, Hong-Yue Gao, Ji-Cheng Liu· Conference on Optics and Com...· 0 citations
An extended depth-of-focus (EDOF) lens is essential for overcoming the limited axial response of conventional optical systems, where high-quality imaging is confined to a narrow depth range. However, existing optimized approaches based on phase engineering or inverse design often suffer from limited physical interpreta...
Yi Tan, Zi-Shuo Zhao, Guanzhangao Xiao et al.· Optics Letters· 0 citations
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