共查询到18条相似文献,搜索用时 125 毫秒
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微透镜及其应用简介 总被引:2,自引:1,他引:1
对二元光学的产生和发展作了介绍,并阐述了二元光学元件之一的微透镜(microlenses)的设计、制作和测试方法以及它们的主要应用。微透镜的设计是基于已成熟的标量衍射理论;而其制作过程包括:计算机设计波面相位、产生掩膜板、光刻或离子(束)蚀刻以及复制产生微透镜,其关键技术蚀刻方法有等离子蚀刻技术和反应离子蚀刻RIE(Reactive Ion Etching)技术;微透镜的测试主要包括衍射效率(diffractive efficiency)和点扩散函数(PSF)的测试,有直接法和间接法两种测试方法。微透镜可以微型化与阵列化,并且可以同微电子器件一起集成化,具有广泛的应用前景。 相似文献
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《中国无线电电子学文摘》2000,(6)
TNZ 00060123衍射微透镜阵列的光学性能研究及测试/陈四海,李毅,何苗,张新宇,易新建(华中理工大学光电子工程系)11激光与光‘匕子学进展.一20()O,(6)一13一18对衍射微透镜阵列的光学性能进行理论上的研究,并提出一种测试微透镜阵列衍射效率和点扩散函数的方法,建立了一套测试系统,并对该所研制的1 28X128衍射微透镜阵列的衍射效率和点扩散函数进行了测试测试结果证明该所研制的2位相的石英和硅衍射微透镜阵列的性能较好,均匀性较高;而由干工艺和光刻系统的限制,4位相衍射微透镜的制作还存在一些不足,这些都可以从所得到的衍射微透镜的点扩… 相似文献
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衍射微透镜阵列的光学性能研究及测试 总被引:2,自引:0,他引:2
对衍射微透镜阵列的光学性能进行理论上的研究,并提出一种测试微透镜阵列衍射效率和点扩散函数的方法,建立了一套测试系统,并对本所研制的128×128衍射微透镜阵列的衍射效率和点扩散函数进行了测试.测试结果证明本所研制的2位相的石英和硅衍射微透镜阵列的性能较好,均匀性较高;而由于工艺和光刻系统的限制,4位相衍射微透镜的制作还存在一些不足,这些都可以从所得到的衍射微透镜的点扩散函数曲线图和衍射效率看出.该方法适于测试具有微小单元尺寸、周期排列的微透镜阵列或单元的衍射效率和点扩散函数. 相似文献
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目前,干涉滤光片已广泛运用到辐射度学测量、光度学测量等领域,为保证其光谱透过率测量的高准确度,提出了采用基于DK242单色仪,入射、出射光路独立设计的全自动,单光路分光光度计,其测量部分采用了硅探测器与积分球组合的探测单元,提高了测量的准确度。装置的不确定度源包括波长定标、探测器均匀性、系统稳定性、光束移位等,装置整体不确定度达到8.78×10-3,满足设计要求。 相似文献
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详细介绍了一种基于二元光学的闪耀光栅的设计方法,并利用傅立叶变换和二元光学理论推导了此光栅的衍射效率公式以及实现闪耀的条件,并利用matlab分析了各级衍射效率,证明可对特定级次实现闪耀。 相似文献
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H. Schmitt M. Rommel A.J. Bauer L. Frey A. Bich M. Eisner R. Voelkel M. Hornung 《Microelectronic Engineering》2010,87(5-8):1074-1076
The fabrication of microlenses is of great interest for several applications in the field of optics like wafer level cameras, homogenization of light, and coupling of light into glass fibers. Especially for low-cost optical products, microlenses have to be fabricated with a high throughput at an adequate quality. One way to fulfil these requirements is the patterning of microlenses by UV imprint lithography (UV-IL). Within this work, microlenses were replicated into the UV curing material PAK-01 by step and stamp UV-IL on silicon substrates with a diameter of 150 mm. The resulting substrates were used as masters to cast PDMS templates. These PDMS templates can be used for high throughput full wafer UV-IL. Additionally, quartz substrates with a diameter of 100 mm were patterned which could be directly used as so called “optowafers”. Master and patterned microlenses were inspected by scanning electron microscopy and with a white light profilometer. The results clearly demonstrate the excellent quality of the replication process and the capability of UV-IL to pattern microlenses on full wafer level for high throughput applications. 相似文献
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Yang Li Zhen-Hua Ye Wei-Da Hu Wen Lei Yan-Lin Gao Kai He Hua Hua Peng Zhang Yi-Yu Chen Chun Lin Xiao-Ning Hu Rui-Jun Ding Li He 《Journal of Electronic Materials》2014,43(8):2879-2887
The optoelectronic performance of the mid-wavelength HgCdTe infrared focal plane array (IRFPA) with refractive microlenses integrated on its CdZnTe substrate has been numerically simulated. A reduced light-distribution model based on scalar Kirchhoff diffraction theory was adopted to reveal the true behavior of IRFPAs operating in an optical system under imaging conditions. The pixel crosstalk obtained and the energy-gathering characteristics demonstrated that the microlenses can delay the rise in crosstalk when the image point shifts toward pixel boundaries, and can restrict the major optical absorption process in any case within a narrow region around the pixel center. The dependence of the microlenses’ effects on the system's properties was also analyzed; this showed that intermediate relative aperture and small microlens radius are required for optimized device performance. Simulation results also indicated that for detectors farther from the center of the field of view, the efficacy of microlenses in crosstalk suppression and energy gathering is still maintained, except for a negligible difference in the lateral magnification from an ordinary array without microlenses. 相似文献