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菲涅耳透镜

菲涅耳透镜的相关文献在1985年到2022年内共计272篇,主要集中在无线电电子学、电信技术、物理学、机械、仪表工业 等领域,其中期刊论文87篇、会议论文13篇、专利文献62471篇;相关期刊57种,包括天津大学学报、光学仪器、太阳能学报等; 相关会议12种,包括第十一届中国光伏大会暨展览会、2010中国平板显示学术会议、上海市科协第七届学术年会—上海市激光学会2009年学术年会等;菲涅耳透镜的相关文献由486位作者贡献,包括关口博、张其明、今福大辅等。

菲涅耳透镜—发文量

期刊论文>

论文:87 占比:0.14%

会议论文>

论文:13 占比:0.02%

专利文献>

论文:62471 占比:99.84%

总计:62571篇

菲涅耳透镜—发文趋势图

菲涅耳透镜

-研究学者

  • 关口博
  • 张其明
  • 今福大辅
  • 吉川博树
  • 大石哲
  • 本田诚
  • 黄良甫
  • 卢振武
  • 布里安·惠尔赖特
  • 平田浩二
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 李鑫鹏; 曹睿杰; 李铭; 郭各朴; 李禹志; 马青玉
    • 摘要: 针对传统声束的衍射极限问题,如何构建具有更高分辨率的聚焦声场,是实现超分辨声成像和声操控领域的重大挑战之一.本文在考虑成像分辨率同时兼顾声场可控制性,提出了一种基于粒子群优化算法的多频超振荡超分辨聚焦声场设计方法.基于常规换能器声场的衍射效应,利用半波带法设计中心频率菲涅耳透镜,并以中心频率为基准在换能器带宽范围内设置多频信号来构建超振荡声场,进一步通过粒子群算法对多频声束的振幅和相位进行优化,在远场构建了焦域半径能够小于中心频率半波长的超振荡声场,还发现其尺寸小于最高频率声场的所形成焦域半径,进一步证明其焦域半径随着中心频率和超振荡频率数的增大而减小.研究结果为可控超分辨声聚焦提供了一种简便易行的方法.
    • 摘要: 从生产制造环节来看,高倍聚光的初始设备投资相对于其他光伏技术(如晶硅)是比较低的,尽管存在不同的高倍聚光设计和生产工艺路线。美国可再生能源实验室(NREL)的详细分析指出,采用菲涅耳透镜和二次光学的技术路线。
    • 黄瑞; 郭丽敏; 刘友强; 王聪聪; 赵明; 张晓宁; 张红梅; 王智勇; 曹银花
    • 摘要: 聚光系统的聚光效率和能量均匀性直接影响单位模组的发电效率.本文研究设计出高倍聚光模组系统,该系统主要包括菲涅耳透镜和球冠平顶微棱镜.采用中心波长修正法进行菲涅耳透镜的设计,并通过Zemax仿真模拟设计出球冠平顶微棱镜.最后通过Zemax模拟,决定选取两侧面夹角α的角度为117°,平顶到球面的间隔g为0.2 mm,球冠平顶微棱镜的曲率半径R为10 mm.聚光系统整体的聚光效率达99.8%,能量均匀度为0.812,并进行实验验证,得出实际聚光效率为83.1%.
    • 黄新荣; 郑继红; 刘悠嵘; 朱天赟; 缪涛
    • 摘要: 提出一种非轴向扫描的细胞显微深度成像技术,在显微系统中加入菲涅耳透镜,利用菲涅耳透镜的色散将不同激发光波长聚焦到不同的轴向位置,以实现对两个或多个焦平面同时成像.基于405nm和532nm两种激发光波长,在传统的荧光显微镜的激发路径中加入对应的两个成像探测器来探测两个不同焦平面所对应像面的成像信息,搭建得到一个能够实现探测深度约为12μm的基于菲涅耳透镜的荧光显微深度成像系统,并与基于显微物镜色差无菲涅耳透镜的荧光显微深度成像系统的成像深度和轴向分辨率进行实验对比.实验结果表明:加入菲涅耳透镜能够实现系统对不同焦面的同时成像;对于同一荧光波段,保证系统横向分辨率的同时,扩大了成像景深.该系统可以实现荧光生物细胞内部不同深度处的多波段同时探测.
    • 文良华; 杨平; 杨康建; 陈善球; 王帅; 刘文劲; 孔庆峰; 杨静静; 许冰
    • 摘要: 为提高薄膜菲涅耳透镜成像性能,采用无波前传感的自适应光学系统对菲涅耳透镜点目标成像的波前像差进行实验校正.像差校正控制采用随机并行梯度下降算法,以远场光斑像清晰度函数为优化指标,算法迭代数十次后收敛.系统闭环校正后,焦平面光斑等效半径缩小了43%,二阶矩为0.997 5,接近理想极限1,像清晰函数值和峰值光强提高了一倍,光强的半高全宽达到1.2倍衍射极限,调制传递函数的中频分量显著提高.实验结果表明该方法结实现构简单,能快速、有效地校正菲涅耳透镜波前像差,改善系统的成像性能,可应用于大口径、轻量化的空间望远镜.
    • 连榕海; 梁齐兵; 舒碧芬; 范畴; 吴小龙; 郭银; 汪婧; 杨晴川
    • 摘要: High concentrating photovoltaic (HCPV) technology plays a more and more important role in solar power generation due to its extremely high efficiency. However, the efficiency of the HCPV module can be reduced by many factors. Especially, there are not enough researches and knowledge on the light intensity distribution and non-uniform illumination of different wavelengths of light concentrated by Fresnel lens. It is generally considered that the maximum power of multi-junction solar cell is achieved when the cell is placed on the focal plane of Fresnel lens. But it is proved to be incorrect by our research. When light beams of different wavelengths go through the Fresnel lens, their light spot distributions on the optical axis are not the same as those when they have different refractive indexes in Fresnel lens. At the same time, the triple-junction solar cell consists of three sub-cells which absorb light beams of different wavelengths respectively. Therefore, the performance of triple-junction cells would be influenced by the light distribution along the optical axis, this is exactly what we want to study in this work. The method of simulating the light tracing is used to calculate and analyze the light intensity distribution and non-uniform characteristics of different wavelengths of light concentrated by Fresnel lens. Combined with them from the circuit network model of a triple-junction solar cell, the electrical performances of triple-junction solar cell at different positions along the optical axis are studied. It is found from the simulation that the performance of cell does not reach the best state when cell is placed on the focal plane. The power of cell on the focal plane reaches only 0.41 W while the maximum point arrives at 0.69 W. The high non-uniformity of light on cell surface when cell is placed on the focal plane causes the decline of power. And an outdoor HCPV testing system with the ability to change the distance between Fresnel lens and the cell is conducted. The experimental results and the simulation results match well, therefore our simulation approach is verified. It shows that the module achieves the maximum power on either side of the focal plane, and the output power can increase more than 20%after optimization. It is a result after equilibrium between light intensity and uniformity on cell surface.%目前,在高倍聚光光伏模组设计中,由于对菲涅耳透镜聚光后各波段的光强分布及其非均匀特性缺乏研究和认识,通常认为在菲涅耳透镜的聚光焦平面处多结太阳电池输出功率最大。本文通过光线跟踪模拟的方法,计算并分析菲涅耳透镜聚光下不同波段的光照能量分布和非均匀特性。同时,结合三结太阳电池电路网络模型,研究在高倍聚光光伏模组中,沿光轴方向不同位置处三结太阳电池的发电性能。结果表明:模组输出功率最高位置在焦平面沿光轴方向上下两侧的位置,优化后模组输出功率比常规设计提高20%以上。该模拟结果得到了实验结果的验证。
    • 张明军; 高文英; 牛泉云; 袁兴起
    • 摘要: 对太阳能聚光光伏发电技术中的聚光系统进行了研究,分析了菲涅耳透镜应用于太阳能聚光器的优点、聚光特性以及光学效率,推导并获得了平面向外、菲涅耳面向太阳电池的点聚焦菲涅耳透镜的设计公式。在ZEMAX软件的非序列模式中实现了基于非成像光学理论的光线追迹仿真,对某一尺寸的菲涅耳透镜的焦平面上光斑能量分布情况进行了分析与模拟。研究结果表明,利用通常的菲涅尔透镜实现聚光作用的聚焦光斑的光能量主要集中在太阳电池的中心部位,呈现为从中心往外围能量越来越弱的同心圆环。要使太阳电池接收到的光能量尽可能均匀,则需要增加二次聚光元件。%The concentrator in solar concentrated photovoltaic system was studied. The advantages of Fresnel lens for solar concentrator and its focusing characteristics and optical efficiency were analyzed, and the designing formula of point focus Fresnel lens with flat surface outward and Fresnel surface facing to the solar cell was obtained. Based on the theory of non-imaging optics, the ray trace simulation was realized in the non sequence model of ZEMAX software, and the solar energy distribution on focal plane of Fresnel lens for a certain size was analyzed and simulated. The simulation results show that, the solar energy of focused facula generated by usual Fresnel lens mainly focuses on the centre of the solar cell, and as the distance from the centre increases, the energy density of the concentric rings decreases. To make the solar energy distribution of the solar cell even, the second concentrator in concentrated Photovoltaic should be added.
    • 王丽
    • 摘要: This paper utilizepolar coordinatelaser direct writing system, with variable exposure dose-implemented method of making a focal length of the refractive index n = 1.512 of K9 glass f = 100mm, tooth height of 0.79um, zone radii are 284.6um , 402.5um, 493.0um, 569.2um, 636.4um Fresnel lens respectively, confirmed that the feasibility and practicality of using optical glass to make Fresnel lens.%本文利用极坐标激光直写系统,采用变剂量曝光的方法实现了在折射率 n=1.512的 K9玻璃上制作一焦距为 f=100mm,齿高为0.79um,环带半径分别为284.6um、402.5um、493.0um、569.2um、636.4um 的菲涅尔透镜,证实了利用光学玻璃制作菲涅耳透镜的可行性及实用性。
    • 蒋大钢; 邓科; 幺周石; 杨元杰; 李晓峰; 秦开宇
    • 摘要: 大口径投影光学系统采用低成本、大口径菲涅耳透镜制作,可将远场散斑强度分布投影到CCD成像探测器上.通过CCD图像处理,能够对给定孔径上的接收功率、闪烁指数进行量化评估;在接收孔径足够大、保障散斑不会因为光束漂移效应而脱离菲涅耳透镜的条件下,该系统还可以对光束漂移和特征半径进行量化评估.同时讨论了CCD像元响应非均匀性误差及其影响、CCD辐照响应函数和图像几何投影系数的定标方法.实验表明,系统能够对激光大气传输过程中的远场散斑特征参数进行监测.特别对自由空间激光通信系统而言,可以为大气衰减和多种大气湍流效应综合作用下的中值电平慢衰落研究和检测阈值优化设计提供实验数据支撑.
    • 郭丽敏; 卫明; 杨光辉; 代明崇; 王智勇
    • 摘要: 高倍聚光光伏技术是将垂直入射于菲涅耳透镜上的太阳光聚焦到电池片上,通过光电转换产生电能,但实际应用时,由于跟踪器跟踪精度低、支架受风会抖动等因素存在,无法保证太阳光始终垂直入射于菲涅耳透镜。针对该问题,在菲涅耳透镜和太阳能电池之间增加一个可拆卸的倒置的去掉顶部的棱锥形二次反射镜来提高聚光光伏的接收角,给出了具体的设计实例,并应用Solidworks软件和Tracepro软件对设计实例进行了计算机光学模拟。结果证实该二次反射镜能很好地提高聚光光伏的接收角,并改善菲涅耳透镜聚焦光斑的能量均匀性。%The direct fraction of sun irradiation is used to focus on Fresnel lens in High Concentrated Photovoltaic technology, electric energy is produced through photoelectric inversion. However, because of many factors in practice like the low tracking accuracy of tracker, structure vibration by winds and atmospheric scattering, the direct normal irradiation to the Fresnel lens can not be guaranteed. To solve this problem, a removable secondary mirror whose shape was a reverse cone with no top was added between the Fresnel lens and solar cells to increase the acceptance angle of the solar module. A design example was given, and analyzed by optical simulation with the software of Solidworks and Tracepro. The conclusion indicates the removable secondary mirror can increase the acceptance angle and improve the irradiance uniformity of the focus spot.
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