此模具拥有液压缸压缩、二次浇口注射，以及锥面与导柱的二次定位等特点，能够准确地保证塑料透镜的精度。
The mold employed fluidcylinder, secondary gate, secondary locating with pyramidal face and guide pillars, which ensured the precision of the plastic aspheric lens.
建立了一种大功率LED的封装结构，二次光学设计采用了微透镜阵列技术，运用光线追踪法研究了这种封装结构的光学性能。
A packaging structure of high-power LED was presented, microlens array was employed in the secondary optical design, optical properties of the package was studied using Trace pro.
研究了二次抛物线型的GRIN球透镜的光线轨迹方程序；得出其轨迹为椭圆曲线及一些重要结论。
At last, the author obtained the equation of ray trace in the GRIN ball lens with the index profile which is quadratic and drew some important conclusions.
非球面透镜能够克服球面透镜的缺点，具有很高的实用价值，故对旋转二次曲面及其透镜成像质量的研究将有重要意义。
Non spherical surface lens can get rid of the spherical surface lens' shortcoming and will be highly valuable, so the study of image quality of rotational conicoid and its lens is meaningful.
二次配光透镜材质为水晶玻璃，经特殊工艺处理，具有更佳的透光性能和抗紫外线功能。
The secondary light distribution lens' material is made of crystal glass. After special fabrication processing, it has much better function on transmission of light and anti-ultraviolet rays.
因此需对非球面透镜进行二次设计。
然后以PC微凹透镜阵列为二次模板，再通过热压印制得了聚甲基丙烯酸甲酯（PMMA）的微凸透镜阵列。
Then, with the obtained PC microcavity structure serving as a mold, a hot embossing process is applied to finally achieve a polymethylmethacrylate (PMMA) MLA.
然后以PC微凹透镜阵列为二次模板，再通过热压印制得了聚甲基丙烯酸甲酯（PMMA）的微凸透镜阵列。
Then, with the obtained PC microcavity structure serving as a mold, a hot embossing process is applied to finally achieve a polymethylmethacrylate (PMMA) MLA.
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