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Physical and Geometric Methods Combined to Model Optics

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A hybrid lens design uses diffraction to model beam propagation and geometrical optics theory to compute the effects of arbitrary lenses.

Kenneth E. Moore

For nearly the entire history of modern lens design, engineers have used geometric ray tracing to model light propagation through optical components. This may soon change, however, thanks to the ever-increasing speed of computers. Ray tracing is based on the assumption that light is essentially a multitude of independent incoherent particles. Decomposing the beam into incoherent rays means that diffraction or coherent interference between parts of the beam is not an issue. Thus, the lens designer need consider only two cases: propagation of the particles between optical surfaces and the...Read full article

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    Published: August 2002
    aspheresBasic ScienceConsumerFeaturesFilterslensesOptics

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