"Version: 20210601"--Title page verso.Includes bibliographical references.1. Introduction to optical systems -- 1.1. What is a system? -- 1.2. Technical systems design -- 1.3. Optical systems design -- 1.4. Modeling input and output system functions2. Ray optics and optical system parameters -- 2.1. Introduction -- 2.2. Rays -- 2.3. Refractive index and optical path length -- 2.4. The law of re…