The coupled way with globular lens in end side of step index fiber(SIF) is a simple and practical method to increase the coupling efficiency between semiconductor optical resource and SIF.
采用光纤端面球透镜耦合方式，是提高半导体光源与阶跃折射率光纤之间耦合效率的简单实用的方法。
Taking 4 step and 8 step and 16 step Fresnel lens for example, the effect of alignment error on diffractive efficiency is analyzed systematically and simulated by computer.
并以4台阶、8台阶、16台阶菲涅耳透镜为例，系统分析对准误差对衍射效率的影响并进行计算机模拟研究。
The results of computer simulation can provide theoretical basis for the fabrication of 16-step Fresnel lens.
模拟计算结果对正在进行的16台阶菲涅耳透镜制作工作提供了理论指导。
The thin film deposition is used to make 16 step Fresnel lens . It can implement system′s lightweight, miniaturization and increase free degree of the design.
使用薄膜沉积法制作16阶菲涅耳透镜，用它代替常规的光学透镜可实现系统的轻量化、小型化，并增加系统设计的自由度。
There are many approaches to realize laser energy uniform. This paper presents a new method based on"variable step sampling" to design a optical system including aspheric lens.
针对激光光束的能量均匀化研究，先后出现了多种方法，基于“不等步长采样”原理设计了包含非球面镜的光学系统。
The 16-step Fresnel lens had been fabricated by thin film deposition and ion beam etching and it has been used in refractive-diffractive CCD camera.
使用薄膜沉积法和离子束刻蚀法制作16阶菲涅耳透镜，应用于折衍混合CCD相机。
Starting from 20 centuries medium term, refractive intraocular lens surgery method improves unceasingly, and step by step apply to clinical.
屈光性人工晶状体手术的含义是，采用人工晶状体植入的方法，矫正眼的异常屈光状态。
We use the thin film deposition to make 16 step fresnel lens, which can obtains lightweight system, miniaturization and increases free degree of the design.
使用薄膜沉积法制作1 6阶菲涅耳透镜，用它代替常规的光学透镜可实现系统的轻量化、小型化、增加系统设计的自由度。
Firstly, the zoom ratio may be enlarged. Secondly, the image point movement may be easily eliminated. The principle of optical compensated step zoom lens is explained.
这种变焦距物镜有两个优点，一是可以实现高倍率变焦，二是容易消除在变焦过程中产生的像点移动现象。
Firstly, the zoom ratio may be enlarged. Secondly, the image point movement may be easily eliminated. The principle of optical compensated step zoom lens is explained.
这种变焦距物镜有两个优点，一是可以实现高倍率变焦，二是容易消除在变焦过程中产生的像点移动现象。
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