Optics and Lasers in Engineering最新文献_第3页

Spectral angle differential decoupling method for determining respirable coal dust concentration by reducing spray droplet scattering interference 减少喷雾液滴散射干扰测定呼吸性煤尘浓度的光谱角微分解耦方法

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering

Pub Date : 2026-06-01 Epub Date: 2026-02-07 DOI: 10.1016/j.optlaseng.2026.109663

Wen Nie , Junchao Wan , Huitian Peng , Huaitong Li , Chenyang Zhou , Yuping Li

Monitoring of respirable dust concentration in high-humidity coal mine environments is subject to severe distortion due to interference from spray droplets. We propose a spectral angle differential decoupling method to suppress spray droplet interference by exploiting the differences in scattering characteristics at dual wavelengths (650 and 940 nm) and dual angles (20° and 90°). Experiments revealed that the dual-wavelength scattering intensity ratios for spray droplets at fixed angles were close to each other (α_w_,_20°≈0.844,α_w,90°≈0.864), whereas a significant disparity arose for respirable dust due to its wavelength-dependent scattering properties. A differential cancellation model was established, using the wavelength dimension to eliminate spray scattering interference and employing the angular dimension to decouple the dust concentration. This led to the derivation of an explicit dust concentration inversion model. We designed a time-division multiplexed circuit control system (trigger period < 14 ms), employing alternating laser triggering to ensure spatiotemporal signal consistency. Experimental results demonstrated that under spray interference, conventional single-light-source monitoring methods exhibited a peak error of 50%, while the proposed model reduced this error to 14%. Furthermore, within a concentration range of 35–100 mg/m³, the average relative error remained stable between 10% and 15%.

高湿煤矿环境下的呼吸性粉尘浓度监测由于喷雾液滴的干扰而出现严重失真。本文提出了一种光谱角微分解耦方法，利用双波长（650 nm和940 nm）和双角度（20°和90°）散射特性的差异来抑制喷雾液滴干扰。实验表明，在固定角度下，喷雾液滴的双波长散射强度比接近（αw,20°≈0.844,αw,90°≈0.864），而呼吸性粉尘由于其波长相关的散射特性，其双波长散射强度比相差较大。建立了用波长维数消除喷雾散射干扰、用角维数解耦粉尘浓度的微分抵消模型。这导致了明确的尘埃浓度反演模型的推导。我们设计了一个时分复用电路控制系统（触发周期<； 14 ms），采用交替激光触发来保证信号的时空一致性。实验结果表明，在喷雾干扰下，传统的单光源监测方法的峰值误差为50%，而该模型将该误差降低到14%。在35 ~ 100 mg/m³的浓度范围内，平均相对误差稳定在10% ~ 15%之间。

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引用次数: 0

Broadband snapshot complete polarization imaging based on dual modified Sagnac-grating interferometers 基于双改进sagnac光栅干涉仪的宽带快照完全偏振成像

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering

Pub Date : 2026-06-01 Epub Date: 2026-02-13 DOI: 10.1016/j.optlaseng.2026.109643

Haitao Wang , Fengqi Guo , Jingping Zhu , Kang Zong , Xiangzhe Zhang , Xizhen Luo , Huilin Jiang

Full polarization imaging provides an additional dimension of information acquisition beyond hyperspectral and intensity imaging. This paper presents a novel broadband snapshot complete polarized Sagnac interferometer (BSCPSI). The BSCPSI is based on two modified dispersion-compensated polarization Sagnac interferometers (MDCPSI). Combining the two MDCPSI units divides incident light into four sheared beams at distinct positions. These beams converge on the detector focal plane array, forming interference fringes containing all Stokes parameters, thereby enabling broadband full-Stokes imaging. A novel demodulation algorithm incorporating reference beams is introduced. This algorithm effectively mitigates detrimental system noise effects while maintaining reasonable accuracy. Optical efficiency analysis indicates that BSCPSI performance can be improved by simultaneously: (1) enhancing P-light transmittance within the polarizing beam splitter, (2) increasing S-light reflectivity in the polarizing beam splitter, and (3) raising the diffraction efficiency of blazed gratings. For MDCPSI, a glass substrate matching the material and thickness of the flat beam splitter is integrated. It positioned opposite the Wollaston grating beam splitter (WGBS) to eliminate optical path difference. Significant error analysis concludes that assembly error between the two plane mirrors must remain below 2.8 mm. Simulations and experiments demonstrate that while MDCPSI achieves linear polarization imaging of artificial targets, BSCPSI successfully identifies their circular polarization information. This work provides a robust approach for snapshot broadband polarization imaging.

全偏振成像在高光谱和强度成像之外提供了额外的信息获取维度。提出了一种新型宽带快照全偏振Sagnac干涉仪（BSCPSI）。BSCPSI是基于两个改进色散补偿偏振Sagnac干涉仪（MDCPSI）。结合两个MDCPSI单元将入射光在不同位置分成四个剪切光束。这些光束汇聚在探测器焦平面阵列上，形成包含所有斯托克斯参数的干涉条纹，从而实现宽带全斯托克斯成像。介绍了一种新的结合参考波束的解调算法。该算法在保持合理精度的同时，有效地减轻了系统噪声的不利影响。光效率分析表明，通过提高偏振分束器内的p光透过率，提高偏振分束器内的s光反射率，提高燃烧光栅的衍射效率，可以同时提高BSCPSI的性能。对于MDCPSI，集成了与平板分束器的材料和厚度相匹配的玻璃基板。它位于沃拉斯顿光栅分束器（WGBS）的对面，以消除光程差。显著误差分析表明，两面反射镜之间的装配误差必须保持在2.8 mm以下。仿真和实验表明，MDCPSI实现了对人造目标的线偏振成像，而BSCPSI则成功地识别了人造目标的圆偏振信息。这项工作为快照宽带偏振成像提供了一种可靠的方法。

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引用次数: 0

CerDef-Detector: automated detection of surface defects in buzzer ceramic discs based on deep learning and machine vision CerDef-Detector：基于深度学习和机器视觉的蜂鸣器陶瓷片表面缺陷自动检测

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering

Pub Date : 2026-06-01 Epub Date: 2026-01-27 DOI: 10.1016/j.optlaseng.2026.109641

Fan Zhang , Xiangfeng Zhang , Hong Jiang , Zhiyi Fan , Kaige Sun , Hongxia Shi , Yefeng Li

Accurate optical inspection of ceramic components is essential for ensuring the reliability of piezoelectric devices and other precision optoelectronic systems. Surface defect detection of buzzer ceramic discs, when combined with deep learning and machine vision, provides a powerful non-contact approach for high-precision quality evaluation under challenging optical conditions. To address the difficulties of extracting subtle defect features in low-contrast and complex illumination environments, an improved detection model, CerDef-Detector, was developed based on the YOLOv11n framework. In this model, a novel Dual-Directional Attention (D2A) module and a Bi-Directional Feature Interaction (BDFI) module were incorporated to effectively enhance the perception of dents and scratches. In addition, a Shape-Intersection over Union (Shape-IoU) loss function was employed to optimize bounding box regression accuracy. A comprehensive ceramic disc defect image dataset encompassing multiple defect types was constructed to support model training. Experimental results showed that CerDef-Detector achieved a precision (P) of 97.21%, a recall (R) of 96.45%, and a mean Average Precision at a 0.5 IoU threshold ([email protected]) of 97.92%, significantly outperforming mainstream detection models. Practical analyses on lighting conditions, defect categories, inference speed, and model size indicated that the proposed method can efficiently accomplish optical defect detection on buzzer ceramic surfaces. This approach offers a reliable and scalable solution for intelligent machine-vision inspection and laser-assisted quality control in advanced manufacturing and other optics-driven industrial applications.

陶瓷元件的精确光学检测对于确保压电器件和其他精密光电系统的可靠性至关重要。蜂鸣器陶瓷片的表面缺陷检测与深度学习和机器视觉相结合，为在具有挑战性的光学条件下进行高精度质量评估提供了一种强大的非接触方法。针对低对比度、复杂光照环境下细微缺陷特征提取困难的问题，基于YOLOv11n框架开发了一种改进的检测模型CerDef-Detector。在该模型中，采用了一种新型的双向注意（D2A）模块和双向特征交互（BDFI）模块，有效增强了对凹痕和划痕的感知。此外，采用Shape-Intersection over Union （Shape-IoU）损失函数优化边界盒回归精度。构建了包含多种缺陷类型的陶瓷圆盘缺陷图像数据集，以支持模型训练。实验结果表明，CerDef-Detector的准确率(P)为97.21%，召回率(R)为96.45%，在0.5 IoU阈值（[email protected]）下的平均准确率（Average precision）为97.92%，显著优于主流检测模型。对光照条件、缺陷种类、推理速度和模型尺寸的实际分析表明，该方法可以有效地完成蜂鸣器陶瓷表面的光学缺陷检测。这种方法为先进制造和其他光学驱动的工业应用中的智能机器视觉检测和激光辅助质量控制提供了可靠和可扩展的解决方案。

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引用次数: 0

Noise imaging based on 90–140 GHz photonic noise source 基于90-140 GHz光子噪声源的噪声成像

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering

Pub Date : 2026-06-01 Epub Date: 2026-01-31 DOI: 10.1016/j.optlaseng.2026.109668

Jiayu Chen , Yuehui Sun , Shede Chen , Pu Li , Liyun Zhong , Jianglei Di , Yuncai Wang

This paper introduces and experimentally validates a single-pixel imaging (SPI) system illuminated by a 90–140 GHz photonic noise source. The noise source, with a 36 dB excess noise ratio (ENR), proves to be an effective spatially-incoherent illuminator for SPI. High-fidelity reconstructions are achieved at sub-Nyquist sampling rates: the letters ”T” and ”H” attain structural similarity index (SSIM) values above 0.7 at 40–50% sampling, while the more complex letter ”Z” requires a 70% sampling rate to reach an SSIM of 0.6. A key finding is that noise illumination significantly outperforms conventional 100 GHz single-frequency coherent illumination, achieving over 30% improvement in SSIM at equivalent sampling rates. This enhancement is attributed to the effective suppression of coherent interference speckles by the noise source’s inherent randomness. Furthermore, we demonstrate the practical potential of this technique for security screening by successfully imaging a concealed metal blade.

本文介绍了一种由90-140 GHz光子噪声源照射的单像素成像（SPI）系统，并进行了实验验证。该噪声源的超噪比（ENR）为36 dB，是一种有效的SPI空间非相干光源。在亚奈奎斯特采样率下实现了高保真重建：字母“T”和“H”在40-50%的采样率下获得了0.7以上的结构相似指数（SSIM），而更复杂的字母“Z”需要70%的采样率才能达到0.6的SSIM。一个重要的发现是，噪声照明明显优于传统的100 GHz单频相干照明，在同等采样率下，SSIM提高了30%以上。这种增强是由于噪声源固有的随机性有效地抑制了相干干涉散斑。此外，我们通过成功成像隐藏的金属叶片，展示了该技术在安全筛查方面的实际潜力。

引用次数: 0

Toward accurate super-resolution reconstruction: Fractional - frequency domain position mapping model for digital holographic microscopy 迈向精确的超分辨重建：数位全息显微镜的分数阶频域位置映射模型

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering

Pub Date : 2026-06-01 Epub Date: 2026-02-05 DOI: 10.1016/j.optlaseng.2026.109672

Mengyao Li , Bingcai Liu , Jiaxin Meng , Kaixiang Xie , Hongjun Wang , Xueliang Zhu , Jintao Xu , Ailing Tian

In Frequency-Shifting Digital Holographic Microscopy (FSDHM), tilted illumination causes positional distortions in spectral sub-apertures, significantly reducing the accuracy of super-resolution phase reconstruction without precise correction. We propose a novel method for high-precision super-resolution phase reconstruction. By analyzing the complex amplitude distribution of the original image across spatial, fractional fourier, and fourier domains, a fractional - frequency domain position mapping model was established. We convert the spectral synthetic aperture problem into the fractional domain, thereby avoiding the limitations of indistinct spectral structural features. Exploiting spatial features of the original image in the fractional domain for feature extraction and matching, this method maps fractional domain offsets back to the frequency domain, enabling precise correction and synthesis of spectral sub-apertures. Simulations and experiments demonstrate sub-aperture positional distortion correction with errors below 1/4 pixel, improving accuracy by 72.9% over conventional FSDHM and achieving super-resolution phase reconstruction by a factor of 1.71. We confirm the method’s applicability to biological pathology samples. It significantly reduces reliance on mechanical control precision and supports flexible frequency-shifting operations with arbitrary offsets. We anticipate that our work offers a viable new tool for applications requiring the non-destructive evaluation of cells or pathological samples, as well as high-precision industrial inspection tasks.

在频移数字全息显微镜（FSDHM）中，倾斜照明会导致光谱子孔径的位置畸变，严重降低了超分辨率相位重建的精度，而无需进行精确校正。提出了一种高精度超分辨相位重建的新方法。通过分析原始图像在空间域、分数阶傅立叶域和分数阶傅立叶域中的复振幅分布，建立了分数阶频域位置映射模型。我们将光谱合成孔径问题转化为分数域，从而避免了光谱结构特征不清晰的局限性。该方法利用原始图像在分数域的空间特征进行特征提取和匹配，将分数域偏移量映射回频域，实现光谱子孔径的精确校正和合成。仿真和实验表明，子孔径位置畸变校正误差小于1/4像素，比传统FSDHM精度提高72.9%，实现了1.71倍的超分辨相位重建。我们证实了该方法对生物病理样品的适用性。它大大减少了对机械控制精度的依赖，并支持灵活的任意偏移频移操作。我们预计我们的工作为需要对细胞或病理样品进行无损评估的应用以及高精度工业检测任务提供了一种可行的新工具。

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引用次数: 0

A highly error-tolerant phase unwrapping method based on Gray-coded light for misalignment error scenarios 一种基于灰度编码光的高度容错相位展开方法

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering

Pub Date : 2026-06-01 Epub Date: 2026-02-01 DOI: 10.1016/j.optlaseng.2026.109671

Yexi Yang , Hubing Du , Yanjie Li , Tete Xu , Hui Wang , Gaopeng Zhang

To address the issue of phase jump errors caused by the misalignment between wrapped phase truncation positions and fringe order transition positions in Gray-code-assisted phase unwrapping technique, a large number of methods for avoiding such jump errors have been developed in recent years. This paper proposes a highly error-tolerant phase unwrapping method based on Gray-coded light for misalignment error scenarios. This method first calculates original fringe orders using traditional Gray-coded method, then performs a modulo operation on these orders, and leverages the characteristic that adjacent-value orders should be equal to derive two complementary sets of fringe orders. Subsequently, using obtained original fringe orders and the critical points where the wrapped phase transitions between positive and negative values, the wrapped phase is partitioned into a series of confidence regions. Finally, phase unwrapping is conducted for each confidence sub-region, yielding a continuous absolute phase free of jump errors. Through experiments on facial height reconstruction, phase retrieval under harsh scenario, phase retrieval covering different misalignment error scenarios, and phase retrieval of complex objects, it is verified that the proposed method can extend the maximum allowable misalignment error from the existing one-third of a wrapped phase cycle to half of a wrapped phase cycle, without increasing additional Gray-coded patterns. The proposed method enhances the tolerance of the phase unwrapping method to the misalignment error, improves phase retrieval accuracy, and does not increase computational time while ensuring high precision and robustness. Therefore, it is well-suited for high-precision optical online detection scenarios.

为了解决灰度编码辅助相位展开技术中由于包裹相位截断位置与条纹阶跃位置不一致而导致的相位跳跃误差问题，近年来人们开发了大量避免这种跳跃误差的方法。提出了一种基于灰度编码光的高容错性相位展开方法。该方法首先利用传统的灰度编码方法计算原始条纹阶数，然后对这些阶数进行模运算，利用相邻值阶数相等的特点，推导出两个互补的条纹阶数集。然后，利用得到的原始条纹阶数和包裹相位在正负之间转变的临界点，将包裹相位划分为一系列置信区域。最后，对每个置信子区域进行相位展开，得到无跳跃误差的连续绝对相位。通过人脸高度重建、苛刻场景下的相位恢复、覆盖不同相位误差场景的相位恢复以及复杂目标的相位恢复实验，验证了该方法可以在不增加额外的gray编码模式的情况下，将最大允许偏差从现有的包裹相位周期的三分之一扩展到包裹相位周期的一半。该方法增强了相位展开法对不对准误差的容错性，提高了相位恢复精度，在保证高精度和鲁棒性的同时不增加计算时间。因此，它非常适合高精度的光学在线检测场景。

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引用次数: 0

Realization of arbitrary linear polarization conversion and wavefront modulation using chiral meta-atoms 利用手性元原子实现任意线偏振转换和波前调制

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering

Pub Date : 2026-06-01 Epub Date: 2026-02-06 DOI: 10.1016/j.optlaseng.2026.109673

Yijun Fu, Zhengyong Song

Metasurfaces have broken through limitations of intrinsic properties of natural materials, which provides a revolutionary solution to challenges such as bulky volume and limited functional integration faced by traditional optical devices. Chiral metasurfaces have demonstrated unique advantages in circular polarization conversion, but achieving arbitrary linear polarization conversion and wavefront modulation still remains a challenge. This work proposes two reflective chiral meta-atoms. Meta-atom A reflects left-handed circularly polarized (LCP) wave while absorbing right-handed circularly polarized (RCP) wave, whereas meta-atom B exhibits the opposite behavior. Simulations show that designed meta-atoms exhibit extremely strong circular dichroism at 1.14 THz. When two meta-atoms are diagonally arranged into a meta-pixel, arbitrary linear polarization conversion and wavefront modulation can be synchronously achieved. As a proof of concept, we design three metasurfaces. The first and second metasurfaces can convert 0° linearly polarized (LP) wave into 45° and 90° LP wave and focus them at 1300 μm. The third metasurface realizes 0°-to-90° LP conversion and generates orbital angular momentum (OAM) beam to further demonstrate the accuracy of wavefront modulation. Our scheme provides new design concept for polarization regulation and wavefront shaping.

超表面技术突破了天然材料固有特性的限制，为传统光学器件体积庞大、功能集成有限等难题提供了革命性的解决方案。手性超表面在圆偏振转换中显示出独特的优势，但实现任意线偏振转换和波前调制仍然是一个挑战。这项工作提出了两个反射性手性元原子。元原子A在吸收右手圆极化波的同时反射左手圆极化波，而元原子B则表现出相反的行为。模拟结果表明，设计的元原子在1.14 THz时表现出极强的圆二色性。当两个元原子对角排列成一个元像素时，可以同步实现任意线性偏振转换和波前调制。作为概念验证，我们设计了三个元表面。第一和第二超表面可以将0°线极化波转换成45°和90°线极化波，并在1300 μm处聚焦。第三个超表面实现了0°到90°的LP转换，并产生轨道角动量（OAM）光束，进一步验证了波前调制的精度。该方案为偏振调节和波前整形提供了新的设计理念。

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引用次数: 0

Towards low-noise tunable terahertz waves generation via photomixing 通过光混合技术产生低噪声可调谐太赫兹波

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering

Pub Date : 2026-06-01 Epub Date: 2026-02-02 DOI: 10.1016/j.optlaseng.2026.109625

Win Indra , Irianto , Jamil Abedalrahim Jamil Alsayaydeh , Adam Wong Yoon Khang , Nurulhalim Bin Hassim , Safarudin Gazali Herawan

We demonstrate a low-cost, stable, and tunable laser system by phase-locking a commercial telecom-grade tunable laser (ITLA) to an Optical Frequency Comb (OFC) within the C-band. Using minimal optical hardware and sub-mW OFC power, we achieved short-term integrated phase noise of 10 mrad and long-term frequency stability of ±0.01 Hz over 10 h. This system enables scalable, OFC-locked tunable lasers and holds promise for applications like tunable THz wave generation and comb-locked transmitters in DWDM systems, supporting scalable phase-locking of multiple lasers with OFC power in the nW regime, making it highly adaptable for various OFC generators.

我们展示了一种低成本、稳定、可调谐的激光系统，通过将商业电信级可调谐激光器（ITLA）锁相到c波段的光频梳（OFC）。使用最小的光学硬件和低于mw的OFC功率，我们实现了10 mrad的短期集成相位噪声和10小时内±0.01 Hz的长期频率稳定性。该系统支持可扩展的OFC锁定可调谐激光器，并有望应用于DWDM系统中的可调谐太赫兹波产生和梳锁发射机等应用，支持nW状态下具有OFC功率的多个激光器的可扩展锁相，使其高度适应各种OFC发生器。

引用次数: 0

Fabrication techniques of deformation carriers in extreme conditions 极端条件下变形载体的制造技术

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering

Pub Date : 2026-06-01 Epub Date: 2026-01-27 DOI: 10.1016/j.optlaseng.2026.109639

Wei He , Mingming Xie , Hanhan Jia , Sirui Mo , Jinluo Zou , Bo Liu , Qihong Fang , Huimin Xie , Jiaqiang Li , Xing Sun

In photomechanics, speckles and gratings serve as essential carriers or sensors for deformation measurement in methods including digital image correlation (DIC) and Moiré. Their fabrication quality directly influences the measurement accuracy, especially in extreme conditions, such as high-temperature and micro/nano-scale. At high temperatures, deformation carriers are prone to oxidation, degradation and ablation; concurrently, fabricating high quality and parametrically defined deformation carriers at miniature scales presents a significant challenge. This review describes recent progress and limitations in the fabrication of deformation carriers for extreme conditions, emphasizing high-temperature and micro/nano-scale. A classification and discussion of classical and state-of-the-art techniques is presented, evaluating them based on parametric fabrication capability, and their destructive or non-destructive characteristics. In addition, fabrication techniques for other extreme conditions including impact, underwater, and cryogenic temperature, are synthesized and analyzed. This review aims to provide a theoretical foundation and methodological reference for fabricating and optimizing deformation carriers, enabling reliable deformation measurements in extreme conditions.

在光刻力学中，散斑和光栅是数字图像相关（DIC）和红外成像等测量变形的重要载体或传感器。它们的制造质量直接影响测量精度，特别是在极端条件下，如高温和微/纳米尺度。在高温下，变形载体容易氧化、降解和烧蚀；同时，在微型尺度上制造高质量和参数化定义的变形载体提出了一个重大挑战。本文综述了极端条件下变形载体制造的最新进展和局限性，重点介绍了高温和微纳米尺度。对经典技术和最新技术进行了分类和讨论，并根据参数化制造能力及其破坏性或非破坏性特性对其进行了评价。此外，合成和分析了其他极端条件下的制造技术，包括冲击、水下和低温。本文旨在为变形载体的制造和优化提供理论基础和方法参考，从而实现在极端条件下可靠的变形测量。

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引用次数: 0

LCVR-based broadband time-division polarimetric imaging technology in visible spectral range 基于lcvr的可见光波段宽带时分偏振成像技术

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering

Pub Date : 2026-06-01 Epub Date: 2026-01-30 DOI: 10.1016/j.optlaseng.2025.109581

Wenxu Jiang , Liyong Ren , Jian Liang

Compared to simultaneous polarimetric imaging systems, time-division systems have unique advantages, including higher detection accuracy, superior spatial resolution, and simpler structural design, making them suitable for a wide range of applications. However, conventional time-division polarimetric imaging systems that rely on rotating optical elements often suffer from reduced reliability, while those based on liquid crystal variable retarders (LCVRs) are typically constrained to single-wavelength operation. To address these limitations, we propose a broadband time-division polarimetric imaging system that eliminates the need for rotating components. A dual-path correction framework is established to compensate for phase retardation errors caused by the wavelength dependent dispersion of the LCVR in the 450-650 nm spectral range, which enables accurate broadband polarimetric imaging across the visible spectrum. Experimental results show that the proposed system achieves an angle of polarization (AoP) measurement error ε_AoP within 2.28% and a degree of polarization (DoP) measurement error ε_DoP within 2.5%. This work may provide a reliable technical pathway toward time-division polarimetric imaging with enhanced stability, high precision, low noise, and free from mechanical error sources.

与同时极化成像系统相比，时分成像系统具有更高的检测精度、优越的空间分辨率和更简单的结构设计等独特优势，适用于广泛的应用。然而，传统的依赖旋转光学元件的时分偏振成像系统往往存在可靠性降低的问题，而基于液晶可变缓速器（lcvr）的时分偏振成像系统通常限于单波长工作。为了解决这些限制，我们提出了一个宽带时分偏振成像系统，消除了旋转组件的需要。在450 ~ 650 nm光谱范围内，建立了双路校正框架来补偿LCVR的波长依赖色散引起的相位延迟误差，从而实现了在可见光谱上的精确宽带极化成像。实验结果表明，该系统的偏振角（AoP）测量误差εAoP在2.28%以内，偏振度（DoP）测量误差εDoP在2.5%以内。这项工作可能为实现稳定、高精度、低噪声、无机械误差源的时分偏振成像提供可靠的技术途径。

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引用次数: 0