This changes the direction of the reflected or refracted ray and prepares it to be traced through subsequent media.Įven in complex systems with a large number of surfaces, the entire ray-tracing process can usually be broken down into successive iterations of these two steps, as shown below. The algorithm then continues by adjusting the ray direction by means of applying a boundary condition, such as reflection or refraction, where the ray hits a surface.Given an initial position and ray direction, either at a point on an object or on a surface in the optical system, the ray-tracing algorithm determines where the ray will hit the next surface and trace the ray to that point.Ray tracing through an optical system largely takes place in two alternating steps, regardless of the details of the algorithm being used: The ray-tracing method used in the Ray Optics Module can be categorized as a nonsequential wavefront method. Ray-tracing algorithms can be categorized as sequential and nonsequential methods. Sequential, Nonsequential, and Exact Ray-Tracing Algorithms In this blog post, we’ll explore what makes the ray-tracing algorithm in COMSOL Multiphysics distinct from traditional ray-tracing algorithms described in standard geometrical optics textbooks and suggest a series of best practices to help you get the most out of your simulation results. The Ray Optics Module for the COMSOL Multiphysics® software uses a multiphysics-capable wavefront method for its ray tracing. Ray tracing is an effective tool for high-frequency optics simulations.
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