函授毕业论文模板.doc

伊犁师范学院 2014级本专科（函授）毕业论文 论文题目 ： 作者姓名 ： 班级 ： 专业 ： 学号 ： 完成时间 ： 伊犁师范学院 二〇一六年十月 薄透镜焦距测量的误差分析 内容摘要 透镜是最常用的光学元件，是构成显微镜、望远镜等光学仪器的基础。反映透镜特性的一个重要参数是焦距。测定薄透镜的焦距不单是一项产品检验工作，更重要的是为光学系统的设计提供依据。薄透镜焦距测定的实验原理非常简单,最常见的有自准法、物距像距法、共轭法三种，操作过程也不复杂,是最基础的光学实验。但是实验中总是出现一些测量误差,尽管测量数据比较集中,但三种方法测量结果并不吻合，无法达到精确测量，比如实验仪器引起的系统误差，由于人眼观测不确定引起的偶然误差以及测量方法所带来的不足之处等等，此文章将在反复测量的情况下,避免偶然误差，讨论三种测量方法引起的误差，以及在实验方面的改进方法，争取不断地完善实验原理，改进实验过程，精确实验数据。 关键词：薄透镜 焦距测量 测量原理 误差分析 Error analysis of thin lens focal length measurement Lens is the most commonly used optical element, is the foundation of the optical instruments such as microscopes and telescopes. Reflects an important parameter is the focal length of lens characteristics. Determination of the thin lens focal length is not only a product inspection work, more important is to provide the basis for the design of the optical system. Thin lens focal length measurement experiment principle is very simple, the most common are autocollimation method, object distance as distance method and conjugate method, three kinds of operation process is not complicated, is the most basic optical experiments. But always appear some error of measurement in the experiments, while the measurement data is centralized, but three ways of measuring results are not consistent, cannot achieve accurate measurement, such as the system error caused by the experimental apparatus, due to the accident error caused by the human eye observation uncertainty and disadvantages brought by the method of measurement, etc., this article will be in the case of repeated measurements, avoid accidental error and the error due to discuss three methods of measuring, and the improvements in the aspect of experiment method, strive to continuously improve the experiment principle, improve the experimental process, accurate experimental data. Key words:Thin lens The focal length measurement Measuring principle The error analysis