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1·Some laws obeyed by the beam expanding by use of the thin lens are discussed.

讨论了用薄透镜扩束时应遵从的规律。

2·One method is presented for determining focus of thin lens by diffraction image in terms of the study results.

并根据研究结果，提出一种通过衍射图像确定薄透镜焦距的方法。

3·Structure design, mould design and manufacturing, injection forming and second processing of thin lens are introduced.

介绍薄型透明片的结构设计及模具设计制造、注射成型、二次加工。

4·Using precision casting method to produce ultra-thin lens is a new manufacturing technology which saves both Labour and time.

用精密浇注法生产超薄光学透镜是省工省时的生产新工艺。

5·A method of surveying the index of refraction of thin lens material with the help of images made by spherical reflection is given.

给出了一种利用透镜的球面反射像测量薄透镜的材料折射率的方法。

6·Measuring the focal lengths of thin lens by means of object distance and image distance is a commonly utilized method in geometric optics.

利用物距、像距法测量薄透镜的焦度是几何光学中最常用的方法。

7·From the focal distance formula of thin lens, the convergence and divergence nature of each kind of thin lens are discussed in different media.

从薄透镜的焦距公式出发，讨论了各种透镜在不同介质中的会聚与发散性质。

8·This paper proposes an experimental method to measure the focal length of a thin lens by using a resistance thread according to electricity principle.

本文提供了一种用电学原理在一根电阻丝上测量薄透镜焦距的实验方法。

9·The commutation rule and the optimal collimation area are analyzed when Gauss light beam passes thin lens, and the design principles of the collimator are given.

阐述高精度激光准直系统的总体构成及特点，着重分析高斯激光束经过薄透镜的变换规律、最佳准直区域以及激光准直光学系统的设计思路。

10·The thermal influences on its basic properties are discussed in detail. And the insensitive condition of the 4-mirror ring resonator to thermal thin lens is given.

详细讨论了热效应对谐振腔基本特性的影响，给出了四镜环形腔的热不灵敏条件。