激光显示广角球幕投影镜头设计

发布时间：2018-05-04 18:06

本文选题：激光显示 + 色度学　；参考：《液晶与显示》2014年03期

【摘要】：激光显示具有色域大、颜色饱和度高、显示画面尺寸灵活可变、无电磁射线辐射等优点。本文根据应用要求,研究和设计了一种用于球幕投影的激光显示广角镜头。分析和计算了激光三基色的白场和光功率匹配参数。投影物镜采用远心反远结构,并且为全球面光学系统,易于加工和检测。设计中有效地控制了系统畸变,利用光阑像差提高了投影显示像面边缘的光照度,改善了像面照度的均匀性,解决了广角系统中像面照度不均匀和畸变控制的难题。投影系统焦距为11.3mm,F#数为2.5;全视场角可达到110°。Nyquist频率处,90%视场内MTF大于0.6,像面照度均匀性优于95%,全视场畸变小于1.5%;色差小于0.5pixel。分析结果表明,本文提出光学设计思路和方法可行,满足应用需求。
[Abstract]:Laser display has the advantages of large color gamut, high color saturation, flexible display size and no electromagnetic ray radiation. In this paper, a laser display wide angle lens for spherical screen projection is studied and designed according to the application requirements. The white field and optical power matching parameters of laser tricolor are analyzed and calculated. The projective objective is telecentric, and is a global optical system, which is easy to process and detect. In the design, the system distortion is effectively controlled, the illumination of projection display image plane edge is improved by using the aperture aberration, the uniformity of image plane illumination is improved, and the problem of uneven illumination and distortion control of image plane in wide-angle system is solved. The focal length of the projection system is 11.3 mm / F # 2.5, the total field angle can reach 110 掳路Nyquist frequency, the MTF of 90% in the field of view is greater than 0.6, the illumination uniformity of the image plane is better than 95%, the whole field distortion is less than 1.5, and the color difference is less than 0.5 pixel. The analysis results show that the optical design idea and method are feasible and meet the needs of application.
【作者单位】：中国科学院长春光学精密机械与物理研究所;
【基金】：国家863高技术研究发展计划资助项目(No.2009AA032701)
【分类号】：TN873

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