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| 1 | 氮化硅光子器件与应用研究进展显示文摘氮化硅材料提供了一种与CMOS兼容的集成光子平台,具有丰富的光学特性。通过调节相关制备参数,可以获得特定折射率的薄膜材料,且消光系数和非线性系数具有较大可调控范围。因此,氮化硅材料在薄膜光学、微纳平面光学、非线性集成光学等诸多领域具有广泛的应用前景。本文主要介绍氮化硅材料的光学特性及其在光学薄膜、微纳超构材料和硅光集成器件方面的研究现状,综述氮化硅材料在太阳能薄膜、可见光超构表面、光栅耦合器和非线性光波导等应用领域的研究概况。 | 范智斌 陈泽茗 周鑫 何辛涛 江绍基 董建文 | 2021 | 中国光学2021，14，4： | 6 |
| 2 | Freeform OST-HMD system with large exit pupil diameter and vision correction capability显示文摘Compactness and light weight,large exit pupil diameter and distance,small distortion for virtual image,and see-through light paths are pivotal factors to achieve a better,wearable experience of optical see-through headmounted displays(OST-HMDs).In addition,light efficiency of the virtual image light path is an important factor for heat dissipation in HMD devices.This paper presents a new type of OST-HMD optical system that includes three wedge-shaped freeform prisms and two symmetric lenses.Based on a 0.71 in.microdisplay,an OST-HMD prototype with a diagonal field of view(FOV)of 45.3°,an F-number(F/#)of 1.8,an exit pupil size of 12 mm×8 mm,and an eye relief of 18 mm is demonstrated.The maximum value of distortion of the final system is 0.6%and 0.4%for virtual image and see-through light path,respectively.The overall dimension of the optical system per eye is no larger than 30 mm(width)×40 mm(height)×14 mm(thickness),and the weight of the optical module including lenses,holder,and microdisplay is 12.8 g.The light efficiency of the virtual image light path is up to 50%higher than those of other OST-HMD optical solutions. | DEWEN CHENG JIAXI DUAN HAILONG CHEN HE WANG DANYANG LI QIWEI WANG QICHAO HOU TONG YANG WEIHONG HOU DONGHUA WANG XIAOYU CHI BIN JIANG YONGTIAN WANG | 2022 | Photonics Research2022，10，1： | 5 |
| 3 | 国内外人工晶状体标准体系对比分析显示文摘介绍了国际、国内人工晶状体标准体系的现状,从体系结构、主要性能指标2个方面对比了YY 0290系列行业标准和ISO 11979系列国际标准的异同,指出了后续不断完善人工晶状体的标准体系建设过程中,除了考虑完善现有的主要性能指标和测试方法外,也应积极探索制定和完善适用于新型人工晶状体的性能要求和测试方法。 | 夏忠诚 郑建 冯勤 钱文文 马杜超 | 2023 | 医疗卫生装备2023，44，2： | 1 |
| 4 | Synthetic aperture metalens显示文摘Metalenses are ultrathin optical elements that can focus light using densely arranged subwavelength structures.Due to their minimal form factor,they have been considered promising for imaging applications that require extreme system size,weight,and power,such as in consumer electronics and remote sensing.However,as a major impediment prohibiting the wide adoption of the metalens technology,the aperture size,and consequently the imaging resolution,of a metalens are often limited by lithography processes that are not scalable.Here,we propose to adopt a synthetic aperture approach to alleviate the issue,and experimentally demonstrate that,assisted by computational reconstruction,a synthetic aperture metalens composed of multiple metalenses with relatively small aperture size can achieve an imaging resolution comparable to a conventional lens with an equivalent large aperture.We validate the concept via an outdoor imaging experiment performed with a synthetic aperture metalens-integrated near-infrared camera using natural sunlight for target illumination. | FENG ZHAO ZICHENG SHEN DECHENG WANG BIJIE XU XIANGNING CHEN YUANMU YANG | 2021 | Photonics Research2021，9，12： | 0 |
| 5 | Fast extended depth of focus meta-optics for varifocal functionality显示文摘Extended depth of focus(EDOF)optics can enable lower complexity optical imaging systems when compared to active focusing solutions.With existing EDOF optics,however,it is difficult to achieve high resolution and high collection efficiency simultaneously.The subwavelength spacing of scatterers in a meta-optic enables the engineering of very steep phase gradients;thus,meta-optics can achieve both a large physical aperture and a high numerical aperture.Here,we demonstrate a fast(f/1.75)EDOF meta-optic operating at visible wavelengths,with an aperture of 2 mm and focal range from 3.5 mm to 14.5 mm(286 diopters to 69 diopters),which is a 250×elongation of the depth of focus relative to a standard lens.Depth-independent performance is shown by imaging at a range of finite conjugates,with a minimum spatial resolution of∼9.84μm(50.8 cycles/mm).We also demonstrate operation of a directly integrated EDOF meta-optic camera module to evaluate imaging at multiple object distances,a functionality which would otherwise require a varifocal lens. | James E.M.Whitehead Alan Zhan Shane Colburn Luocheng Huang Arka Majumdar | 2022 | Photonics Research2022，10，3： | 0 |
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