![]() Ray optics or geometrical optics does not describe phenomena such as diffraction, which require wave optics theory. Ray tracing uses approximate solutions to Maxwell's equations that are valid as long as the light waves propagate through and around objects whose dimensions are much greater than the light's wavelength. ![]() This allows even very complex optical systems to be analyzed mathematically or simulated by computer. ![]() Rays are used to model the propagation of light through an optical system, by dividing the real light field up into discrete rays that can be computationally propagated through the system by the techniques of ray tracing. In optics, a ray is an idealized geometrical model of light or other electromagnetic radiation, obtained by choosing a curve that is perpendicular to the wavefronts of the actual light, and that points in the direction of energy flow. ![]()
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March 2023
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