Design of fresnel lens with big grooves and equal thickness based on the software zemax 软件的大齿距等厚菲涅尔透镜的设计
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Projectors for film and television studios , stage and photographic use - part 2 : fresnel lenses , specifications 电影电视舞台和照明用聚光灯.第2部分:多级透镜
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The submicron ring , laser beam shaper and fresnel lens is fabricated by ion etching according to the selected parameter 依照这些参数刻蚀出了高质量的特征尺寸为亚微米的环、光束整形元件和菲涅耳透镜等元件。
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The course covers non - sequential ray tracing , sources , detectors , objects , ray splitting , scattering , ghost analysis , stray light analysis , prisms , fresnel lenses , multi - element lenses , gradient index , polarization and thin film modeling 本课程涵盖了非连续光线的追迹、光源、探测器、物体、分光、散射、鬼像分析、杂散光分析、棱镜、菲涅耳透镜、多元件透镜、梯度折射率、偏振和薄膜的建立。
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The principle and structure of pyroelectric infrared detector consisted of pyroelectric infrared sensor , fresnel lens and an application - specific controller , which is compatible with 0 . 6 m 1p1m n - well cmos technology , is introduced in the paper 本文介绍了组成热释电红外探测器的三大部件:热释电红外传感器、菲涅耳透镜、专用控制芯片的结构和原理,并提出了一种0 . 6 m1p1mn - wellcmos工艺专用控制芯片的设计方案。
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In the paper we mainly researched space gainp2 / gaas / ge high efficiency tandem cells " making process by home - made low pressure mocvd technology and new solar concentrators . firstly , we presented reseached and development of solar cells in china and foreign countries ; secondly , on the basis of fundamental priciples and theories , we discussed some factors of influcing conversion efficiency of solar cells , and analysed the i - v output feature of two - junction tandem cells ; then the design concept of gainp2 / gaas / ge two - junction tandem cells was discussed , the detailed aspects of gainp2 / gaas / ge tandem cells epitaxy growth by low pressure mocvd was studied , and some questions on epitaxy growth ( such as crystal qualities , interface stress , element interdiffusion , n - and p - type doping et all ) were solved ; after that , the cell fabrication process was described ; finally , we reseached the hot pressing and mould process technology of an arched line - focus fresnel lens made by pmma , designed and fixed new solar concentrators 本文致力于用自制的低压mocvd装置进行cainp _ 2 / gaas / ge空间用高效级联太阳能电池制作的工艺以及聚光太阳能电池组件的研究。首先，介绍了国内外太阳能电池的研究现状及应用情况；其次，运用太阳能电池基本原理讨论影响电池转换效率的因素，分析了级联电池的伏安特性；随后，讨论了cainp _ 2 / gaas / ge双结级联电池的结构设计理念，研究了采用低压mocvd技术生长cainp _ 2 / gaas / ge级联太阳电池材料的工艺过程，解决了异质材料生长的结晶质量、界面应力、材料互扩散以及材料n 、 p型掺杂等一系列问题；然后总结了级联电池的后工艺制作；最后，研究了以pmma为材料的菲涅耳线聚焦透镜的热压成型工艺及其模具的加工工艺，设计并安装完成新型聚光太阳能电池组件。
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Moreover , compensated for aberration of ball lens by designing phase compensating plate to get a higher energy utilization rate . third , combining with the light beam property of dwdm system , put forward taking fresnel lens array as fiber arrayed collimator , designed differently structured lens array and discovered the arrayed collimator loss property , which compared with the existing parameter of fiber collimator , embodies many advantages as arrayed collimator 结合密集波分复用系统的光束耦合特点，提出用菲涅尔透镜列阵做光纤阵列准直器，并设计不同结构的透镜列阵，得出了该阵列准直器的光束耦合损耗特征，与现有的光纤准直器的参数相比，体现出用菲涅尔透镜列阵作阵列光纤准直器的诸多优势。
