光学设计软件 —— ZEMAX 简介 高 宏 实验室：中1-3133 honggao@mail.xjtu.edu 西安交通大学理学院

课程安排 章 节 内 容 课时 第一章 绪论（透镜设计的一般概念） 0.5课时 第二章 章 节 内 容 课时 第一章 绪论（透镜设计的一般概念） 0.5课时 第二章 傍轴光学（符号约定、圆锥曲面、光线追迹方程及其相关概念） 1.5课时 第三章 ZEMAX结构简介 3课时 第四章 像差（aberrations）的一般概念 第五章 ZEMAX输出参数分析及一般技巧 2课时 第六章 像差分析和修正 第七章 其它重要成像评价参数 第八章 公差（tolerance）分析 1课时

Chap 1 Introduction §1.1 General Concept of Lens Design Why lens design? Used to be a skill reserved for a few professionals Now accessible to the general optical engineering community Comparison: Color Spherical aberration Off-axis aberration Field curvature

Aberration and Imagery

Lens Size and FOV

Why ZEMAX? Acquired skills Easy to learn Market occupation Low system requirement A professional lens design software Acquired skills Manual Design code Design philosophy

Specifications Customer’s requirements FOV、EFL、f-number、resolution、spectral bandwidth …

Chap 2 Paraxial World §2.1 Sign Conventions and Aspheres 规定光线传播方向自左至右为正方向 沿轴线段：以分界面和光轴的交点为原点，自左向右为正方向，反之为负。 垂轴线段：以光轴为基准，光轴以上为正，光轴以下为负。 光线与光轴夹角：以光轴转向光线所形成的锐角度量，顺时针为正，逆时针为负。 光线与法线夹角：由光线以锐角转向法线，顺时针为正，逆时针为负。 光轴与法线夹角：由光轴以锐角转向法线，顺时针为正，逆时针为负。 相邻两分界面间隔：由前一顶点到后一顶点，顺光线方向为正，逆光线为负。折射系统中，恒为正。

Shape Factor

Surface Sag Aspheric Surface

Conic asphere

Departure From Sphere

§2.2 Paraxial Ray Trace Equations = Optical Power Curvature

Gaussian Lens Formula PRTE World Lens

§2.3 Other Important Power Expressions Single Reflecting Surface Two-Element System Thin Lens

§2.4 Principal Plane Locations in a Two-Element System

§2.5 Magnification

Exercises 2-1：

Exercises 2-2：

Exercises 2-3：

Chap 3 ZEMAX Get Start §3.1 General Structure of ZEMAX Data Entry

Layout

Graphic Analysis Fans

Spot Diagram

Curvature/Distortion

Keep Tracking of Designs – File Name Protocol

Ray Selection

Exercises 3-1（见书pp29-31）

§3.2 Several Important Concepts Stop and Pupil The stop is a hard physical aperture in the optical system. It is limiting aperture of the system allowing some rays to pass through to the image.

The image of the stop is called the pupil.

Marginal and Chief Rays The ray that just brushes the edge or rim of the stop (an entrance pupil and exit pupil) is call the marginal ray. The ray from the maximum filed angle of the off-axis point that passes through the center of the stop is call the chief ray.

Pupil Size and F-Number

The Lagrange Invariant

Exercises 3-2: (P49)

Exercises 3-3：Stop shifting and aberration control （见书58-61） Exercises 3-4：Design the Wollaston landscape lens （见书58-61） Exercises 3-5：Stop shifting and aberration control （见书62-64）