监控镜头设计

word文档 下载后可自由复制编辑 本科生毕业设计 本科生毕业设计 监控镜头设计 Design of Surveillance Camera word文档 下载后可自由复制编辑 摘 要 随着设计、加工、测试技术水平的提高，光学非球面已逐渐成为应用广泛的元件之一。在光学系统中恰当地使用非球面，能够有效地提高光学系统的成像性能，改善其紧凑性。 本论文首先介绍数码镜头的研究意义和研究现状，分析监控镜头的性能指标要求与结构形式选择，以及利用光学非球面校正像差的基本原理。然后，设计完成了一个四片式微小型数码监控镜头，采用光、机性能好的480R光学塑料和双面非球面透镜。所设计的光学系统的相对孔径为1/3，焦距为7.llmm，全视场角为46.4°，80lp/mm处的调制传递函数(MTF)值大于0.4，成像质量满足使用要求。

关键词：光学设计 监控镜头 非球面 word文档 下载后可自由复制编辑 ABSTRACT Along with the technical level of design, processing, testing, aspheric optics has gradually become one of the most popular element. The proper use of aspheric optical system, can effectively improve the imaging performance of optical system, to improve its compactness. The research significance and the research status of this thesis firstly introduces the digital camera lens, analyzing and monitoring the performance requirements and the choice of structure form, and the basic principle of optical non spherical correcting aberrations. Then, designed to complete a four chip micro digital surveillance camera, using 480R optical plastics and two-sided light, machine performance of aspheric lens. The relative aperture of the optical system design for the 1/3, the focal length is 7.11mm, the full field of view angle is 46.4 °, the modulation transfer function (80lp/mm MTF) values greater than 0.4, the imaging quality to meet the use requirements.

Keywords：Optical Design Surveillance Camera Aspheric Surface word文档 下载后可自由复制编辑 目 录 第一章 绪论 ............................................................................................................................ 1 1.1监控镜头的概述 ........................................................................................................ 1 1.2监控镜头的研究意义 ................................................................................................ 1 1.3监控镜头的国内外研究现状 .................................................................................... 2 第二章 光学系统的一般设计 ................................................................................................ 7 2.1光学系统的一般设计过程 ........................................................................................ 7 2.1.1外形尺寸计算 ................................................................................................... 7 2.1.2初始结构的计算和选择 ................................................................................... 7 2.1.3像差的校正和平衡 ........................................................................................... 7 2.2光学系统设计的步骤 ................................................................................................ 8 2.3像质评价 .................................................................................................................... 8 2.3.1瑞利判断 ........................................................................................................... 9 2.3.2中心点亮度 ....................................................................................................... 9 2.3.3分辨率 ............................................................................................................... 9 2.3.4点列图 ............................................................................................................. 10 2.3.5传递函数 ......................................................................................................... 10 第三章 监控镜头的设计 ...................................................................................................... 11 3.1技术指标 .................................................................................................................. 11 3.2监控镜头初始结构的选择和分析 .......................................................................... 13 3.2.1监控物镜常用的像差特点和两种常用基本结构 ......................................... 13 3.2.2初始结构的选择 ............................................................................................. 14 3.3监控镜头的优化设计 .............................................................................................. 17 3.3.1光学系统优化设计的基本原理 ..................................................................... 17 3.3.2非球面校正像差的原理 ................................................................................. 17 3.3.3用于光学非球面的几种重要光学塑料 ......................................................... 18 3.3.4优化设计过程 ................................................................................................. 20 3.4优化设计结果 .......................................................................................................... 21 3.5成像质量评价 .......................................................................................................... 23 结 论 ................................................................................................................................ 25 参考文献 ................................................................................................................................ 26 致 谢 ................................................................................................................................ 27