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四片放映物镜的优化设计 光信息科学与技术082班：XX 指导教师：XXX （陕西科技大学电气与信息工程学院 陕西 西安 710021） 摘要:为物体提供适当照明并在屏幕上成放大实像的光学系统。简称投影系统。...不同需要可选用不同的物镜，例如，投影物体轮廓和外形的投影仪，物镜应较好地矫正畸变和像场弯曲；放映用物镜应能耐热，故通常不使用胶合透镜。虽然，照相物镜可以用作放映物镜，但放映物镜还是有一些不同之处。 本文介绍了根据四片放映物镜的性能指标，及焦距，相对孔径，视场角及后工作距来确定其初始结构。结合已有的参考文献找出类同结构并对其进行焦距缩放得到本课题的初始结构，以匹兹瓦物镜的变形作为基本光路布局，利用计算机在ZEMAX软件中对其进行像差校正即借助于光学镜头的优化设计程度完成，紧接着进入像质评价：按照仪器总体指标要求成像质量对镜头的像差和像差状况进行评价，直至镜头的成像质量符合设计要求。 关键词：光学镜头,ZEMAX,物镜设计,像差分析,像质评价 The Superior Design of 4-piece Type Projection Objective Lens ABSTRACT: The optical system that to provide appropriate objects on the screen lighting and to enlarge the realities. It’s called for short as Projection system. Different needs can choose different objectives. For example, Projection objects profile and appearance of the projector. The objective should be better correction distortion and like a crooked. With the objective to heat should be shown. So dont usually use agglutination lens. Although, Photographic optical lens can be used as objective projected. But Projection Objective has some different. According to the function and index of a fourth Projection Objective , then the focal length f’=120mm、relative aperture D/f’=1:2、field angle 2w=12.8 and the back-work length l’≥47mm.On this account to define a tentative pattern of the beam path. (The cemented doublet is out of shape of Pizval )And combine the consult documents of previously to find out the similar structure of design and proceed to the next step: Focal length contract and amplify is come to the initial structure of this design. Then apply the optics design software to start aberration rectification in the computer. In other words, accomplish rectification with the aid of optical lenses’ superior design. Last but not the least, the image assessment is important. On the basis of the instrument’ s property and target and image quality to handle lens aberration、chromatic condition conduct assessment until image quality of the lens tally with require. Key words: