Ray Tracing: Real

Authored by: Josep Arasa , Javier Alda

Encyclopedia of Optical and Photonic Engineering

Print publication date:  September  2015
Online publication date:  September  2015

Print ISBN: 9781439850978
eBook ISBN: 9781351247184
Adobe ISBN:

10.1081/E-EOE2-120027488

 Download Chapter

 

Abstract

In this entry, we present the rules of real ray tracing step-by-step; these rules are explained in a clear language and same examples are included for the first-time readers. Real ray tracing is presented in a self-explanation form to make this contribution readable in itself. The Snell law is revisited and adapted for its implementation in a numeric algorithm. The spot diagrams resulting from a real ray-tracing calculation are discussed. The wave nature of light propagation can be also approximated by using real ray tracing. Therefore, we show the method to calculate a geometrical wave front and also its intrinsic limitations. Linked with the spot diagrams, it is possible to evaluate a point spread function. Also, an optical transfer function and a modulation transfer function are defined within this geometrical approach. The evaluation of the flow of energy through the system is discussed within the ray-tracing framework. (Some hints about the inner mechanisms used by the optimization procedures of optical systems are discussed and related with a basic classification of the software packages currently used.)

 Cite
Search for more...
Back to top

Use of cookies on this website

We are using cookies to provide statistics that help us give you the best experience of our site. You can find out more in our Privacy Policy. By continuing to use the site you are agreeing to our use of cookies.