Correction of Chromatic Aberration by Using a Diffractive Lens

Modern optical systems often consist of components with different working principles. For example, a diffractive lens can be used to correct the chromatic aberrations from traditional refractive lenses. Diffractive lenses are usually designed to work at a certain diffraction order; however, undesired orders do exist in practice. In this example, the PSF of a hybrid imaging system consisting of both refractive and diffractive lenses is investigated, especially, with the undesired diffraction orders taken into account.

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