An airy pattern is a characteristic diffraction pattern that appears when coherent light passes through a circular aperture or lens, showing a central bright region surrounded by concentric dark and bright rings. This pattern is a direct result of the wave nature of light and the principles of diffraction, particularly the interference of light waves emanating from different points in the aperture. The airy pattern is significant in understanding optical imaging systems and the resolution limits of lenses.

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Anti-reflection (AR) coatings are applied to optical components to increase throughput and reduce hazards caused by back-reflections.

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Fresnel Diffraction: A type of diffraction that occurs when wavefronts are partially obstructed, leading to complex interference patterns, often analyzed in near-field regions.

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A mathematical function that describes how a point source of light is distributed in an imaging system, directly related to the airy pattern observed in optical systems.

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